Answers
Answer:
14.57g
Explanation:
Given parameters:
Mass of dish + ball = 15.6g
Initial volume of water in the cylinder = 26.7mL
Final volume of water in the cylinder = 38.9mL
Mass of dish = ?
Unknown
Mass of the ball = ?
Solution;
Since the mass of ball and dish is 15.6g,
Mass of the ball =Mass of ball + dish - mass of the dish
Insert the parameters and solve;
Mass of the ball = 15.6g - 1.03g = 14.57g
Related Questions
How many neutrons are in the nucleus of an atomic number of 11 and a mass number of 5
Answers
Answer:
6 neutrons
Explanation:
The mass of on atom is the number of protons plus neutrons. This element is bromine as its' mass number is 5. If its' mass number is 5 that means that there are 5 protons in the nucleas. 11 (atomic number) - 5 (# protons) = the number of nuetrons.
Answer:
6
Explanation:
An organic compound (CaHbNcOdCle) was synthesized and a sample of it was analyzed and found to contain only C, H, N, O, and Cl. It was observed that when a 0.150-g sample of the compound was burned, it produced 0.138 g CO2 and 0.0566 g H2O. All the nitrogen in a different 0.200-g sample of the compound was converted to NH3, which found to weigh 0.0238 g. Finally, the chlorine in a 0.125-g sample of the compound was converted to Cl- and by reacting it with AgNO3, all the chlorine was recovered as AgCl. The AgCl, when dried, was found to weigh 0.251 g. Calculate the weight percent of each element in the compound.
Answers
The mass percent of each element is:
mass percent of C is 24%
mass percent of H is 4%
mass percent of Cl is 50%
mass percent of N is 9.8%
Mass percent of oxygen is 12.2%
What is the mass of each of the constituent elements in a sample of the compound?The mass of each of the constituent elements in a sample of the compound is determined as follows:
mass of C:
1 mole of C is present in 1 mole of CO₂
The mass of C in 0.138 g of CO₂ will be:
0.138 g / 44 g * 12 g = 0.0368 g
mass of H:
2 moles of H are present in 1 mole of H₂O
The mass of H present in 0.0566 g H₂O will be:
0.0566 g / 18 * 2 * 1 = 0.00628 g
mass of Cl;
1 mole of Cl is present in 1 mole of AgCl
The mass of Cl in 0.251 g of AgCl will be:
0.251 g / 143.5 g * 35.5 g = 0.0621 g
mass of N:
1 mole of N is present in 1 mole of NH₃
The mass of N in 0.251 g of NH₃ will be:
0.0238g / 17.0 g * 14 g = 0.0196 g
Mass percent of each element will be:
mass percent of C:
mass percent = 0.0368/0.15 * 100
mass percent = 24%
mass percent of H:
mass percent = 0.00628 / 0.15 * 100%
mass percent = 4%
mass percent of Cl;
mass percent of Cl:
mass percent = 0.0621 / 0.125 * 100%
mass percent = 50%
mass percent of N:
mass percent = 0.0196 / 0.2 * 100%
mass percent = 9.8%
Mass percent of oxygen = 100 - (24 + 4 + 50 + 9.8)
Mass percent of oxygen = 12.2%
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What is the ratio of [A−]/[HA][A−]/[HA] at pH 5.75?5.75? The pKpK of formic acid is 3.75. [A−][HA]=[A−][HA]= Draw the structure of HAHA for formic acid. Select Draw Rings More Erase Select Draw Rings More Erase Select Draw Rings More Erase C O H Draw the structure of the conjugate base for formic acid. Select Draw Rings More Erase Select Draw Rings More Erase Select Draw Rings More Erase C O H What is the fractional charge on the acid at the given pH?
Answers
Answer:
The ratio of [A⁻] / [HA] is 100
Explanation:
The structure of the formic acid (Weak acid), is in the picture.
Using H-H equation, we can determine the ratio of [A⁻] / [HA] for a weak acid as Formic Acid:
pH = pKa + log₁₀ [A⁻] / [HA]
Where A⁻ is the conjugate base of the weak acid, HA.
Solving for formic acid at pH = 5.75:
5.75 = 3.75 + log₁₀ [A⁻] / [HA]
2 = log₁₀ [A⁻] / [HA]
10^2 = [A⁻] / [HA]
The ratio of [A⁻] / [HA] is 100
![What is the ratio of [A]/[HA][A]/[HA] at pH 5.75?5.75? The pKpK of formic acid is 3.75. [A][HA]=[A][HA]=](https://brainimage.s3.us-east-005.backblazeb2.com/answers/attachments/ZI37eAnwipO1GNkgu03x7yiXX5HRitge.png)
Which of the following statements about balanced chemical equations is correct?
A.
The products must contain the same numbers and types of atoms as the reactants.
B.
The products must contain the same arrangement of atoms as found in the reactants.
C.
The products must contain the same numbers but not the same types of atoms as the reactants.
D.
The products must contain the same types but not the same numbers of atoms as the reactants.
Answers
Answer:A.
The products must contain the same numbers and types of atoms as the reactants.
Explanation: I think this
Answer:a
Explanation:
How much work (in Joules) is required to expand the volume of a pump from 0.00 L to 2.50 L against an external pressure of 1.10 atm
Answers
Answer:
W = 278.64375 Joules
Explanation:
The information given in this problem are;
Initial volume = 0L
Final volume = 2.50L
ΔV = 2.50 - 0 = 2.50 L
External pressure, P = 1.10 atm
Work = ?
These parameters are related by the equation;
w = - P ΔV
W = - (1.10 )(2.50)
W = 2.75 L atm
Upon conversion to joules;
1 liter atmosphere is equal to 101.325 joule
W = 278.64375 Joules
Hello How do you do?
What is logic bomb and time bomb?
Answers
Answer:
A logic bomb and a time bomb are both types of malicious software or code that are designed to cause harm to a computer system or network. Here's a brief explanation of each:
Logic Bomb:
A logic bomb is a piece of code or software that is intentionally inserted into a system to execute a malicious action when specific conditions are met. It remains dormant until triggered by a predefined event or circumstance, such as a specific date, time, or user action. Once triggered, the logic bomb may perform various harmful actions, such as deleting files, corrupting data, or disrupting system functionality. The purpose of a logic bomb is often to cause damage or to gain unauthorized access to a system.
Time Bomb:
A time bomb is similar to a logic bomb, but it is specifically designed to activate or execute its malicious payload at a certain date or time. It is usually programmed to remain undetected until the predetermined time arrives. The time bomb can be set to trigger after a specific time period or on a particular date, at which point it may carry out destructive actions. Time bombs can be used by attackers to target specific events or to coordinate an attack to occur simultaneously across multiple systems.
Both logic bombs and time bombs are considered forms of malicious code or malware and are used with malicious intent to disrupt, damage, or compromise computer systems or networks. They can be extremely harmful, and it is important to have strong security measures, such as antivirus software and regular system updates, to protect against such threats.
Explanation:
What explains why an alpha particle might go directly through the atom?
A. There is something positive in the atom that repels the positive alpha particle.
B. The atom is mostly empty space, allowing the positive alpha particle to travel through unaffected.
C. The atom's electrons attract the positive alpha particle.
Answers
The atom is mostly empty space, allowing the positive alpha particle to travel through unaffected explains why an alpha particle might go directly through the atom (Option B).
What is an atom?An atom is the smallest unit of matter that retains all of the chemical properties of an element. Atoms are composed of protons, neutrons and electrons. They are the building blocks of all other matter.
An alpha particle might go directly through the atom because an alpha particle is relatively large and carries a significant amount of energy, so it can pass through the relatively small and mostly empty space within an atom without colliding with its nucleus or electrons.
The positive charge of the alpha particle could potentially interact with the positive charge of the nucleus, but this effect is usually negligible due to the small size of the nucleus compared to the distance between the alpha particle and the nucleus. Therefore, the most likely explanation for an alpha particle passing directly through an atom is that the atom's structure is mostly empty space.
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C3H7OH + O2 -> CO2 + H20balance the equation then find mole ratio of oxygen to water, how many mores of carbon dioxide are produced when 4.6 mol of oxygen react, and how many molecules of C3H7OH will react with 4.6 L of O2?
Answers
mole ratio = 9:8
moles of CO2 = 3.07moles
molecules of C3H7OH = 2.75 * 10^22 molecules
ExplanationsThe balanced form of the chemical rreaction is as shown below;
\(2C_3H_7OH+9O_2\rightarrow6CO_2+8H_2O\)The mole ratio of oxygen to water as shown in the equation is 9:8
Given the following parameter
mole of oxygen that reacted = 4.6moles
According to stoichiometry, 9moles of oxygen produces 6 moles of caron dioxide. The moles of CO2 that is required will be expressed as:
\(\begin{gathered} moles\text{ of CO}_2=\frac{6}{9}\times4.6moles\text{ of O}_2 \\ moles\text{ of CO}_2=3.07moles \end{gathered}\)Hence the moles of CO2 that will be produced is 3.07moles
Also if 4.6L of O2 reacted, the moles of oxygen that reacted will be;
\(\begin{gathered} moles\text{ of O}_2=\frac{4.6}{22.4}(1mole\text{ = 22.4L}) \\ moles\text{ of O}_2=0.205moles \end{gathered}\)According to stochiometry, 2 moles of C3H7OH reacts with 9moles of oxygen, the moles of C3H7OH required will be:
\(\begin{gathered} moles\text{ of C}_3H_7OH=\frac{2}{9}\times0.205 \\ moles\text{ of C}_3H_7OH=0.0456moles \end{gathered}\)Convert the moles of C3H7OH to molecules as shown
\(\begin{gathered} molecules\text{ of }C_3H_7OH=0.0456\times6.02\times10^{23} \\ molecules\text{ of }C_3H_7OH=0.275\times10^{23} \\ molecules\text{ of }C_3H_7OH=2.75\times10^{22}molecules \end{gathered}\)Thermochemical Equations Project: Modeling Energy Changes
Assignment Summary In this assignment, you will write and balance a chemical equation. Then,you will use a table of enthalpy values to calculate the energy change in the reaction. Next, you will create a model of the energy change in the reaction.Finally, you will write an explanation that describes the energy change in the reaction.
Answers
Answer:
Thermochemical Equation
Thermochemistry
Thermochemical Equation
Define thermochemical equation.
Define heat of reaction.
What is the best way to heat a house?
Heating a home is becoming more and more expensive. Do we use gas, oil, electricity, wood? Part of the decision is based on which fuel will provide the highest amount of energy release when burned. Studies of thermochemistry can be very useful in getting reliable information for making these important choices.
a gas furnace
Thermochemical Equation
When methane gas is combusted, heat is released, making the reaction exothermic. Specifically, the combustion of 1 mol of methane releases 890.4 kilojoules of heat energy. This information can be shown as part of the balanced equation.
text{CH}_4(g)+2text{O}_2(g) rightarrow text{CO}_2(g)+2text{H}_2text{O}(l)+890.4 text{kJ}
The equation tells us that 1 mol of methane combines with 2 mol of oxygen to produce 1 mol of carbon dioxide and 2 mol of water. In the process, 890.4 kJ is released and so it is written as a product of the reaction. A thermochemical equation is a chemical equation that includes the enthalpy change of the reaction. The process in the above thermochemical equation can be shown visually in the Figure below .
Answer:
sorry
Explanation:
2. What is the difference between an investigation and a demonstration?
Answers
Answer:
An investigation is about collecting information, while an experiment is testing something based off an investigation
Explanation:
Hope this helps
An experiment tests something based on an investigation, whereas an investigation pertains to gathering knowledge.
What are an investigation and a demonstration?The operation of something is demonstrated. There are independent and dependent variables in an experiment. The control of variables distinguishes an experiment from a demonstration. Add an independent as well as a dependent variable to the project in order to convert a demonstration into an experiment.
An information resource's value to a particular professional group and its influence on the procedures and results of healthcare are just a few of the problems that demonstration studies address. An experiment tests something based on an investigation, whereas an investigation pertains to gathering knowledge.
Therefore, an experiment tests something based on an investigation, whereas an investigation pertains to gathering knowledge.
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five ways through which plant diseases are spread
Answers
16. Given the unbalanced equation:
_Al + CuSO4 → _A1,(SO2), + --Cu
When the equation is balanced using
the smallest whole-number coefficients,
what is the coefficient of AI?
(1) 1 (2) 2 (3) 3
(4) 4
Answers
Explanation:
Consider matrix A.
What is the inverse of A? Fill in the missing elements in the matrixs.Consider matrix A.
What is the inverse of A? Fill in the missing elements in the matrixs.
(2) 2.
Explanation:
2Al + 3CuSO4 → Al2(SO4)3 + 3Cu
Hence, now yet it's balanced chemical equation.
is it true that a gas takes up the shape of the container
Answers
How many moles of sodium hypobromite (NaBrO) should be added to 1.00 L of 0.050 M hypobromous acid
(HBrO) to form a buffer solution of pH 9.15? (Assume that no volume change occurs when the NaBrO is added)
(Ka=2.5x10)
Answers
The concentration terms are molality, normality and mole fraction. Molarity can be used to find out the ionic strength of any solution. Therefore, 0.050moles of sodium hypobromite (NaBrO) should be added to 1.00 L of 0.050 M hypobromous acid (HBrO) to form a buffer solution of pH 9.15
What is molarity?Molarity can be calculated by dividing number of moles of solute by volume of solution in litre. Molarity is affected by temperature. Its unit is mole/liter. It measure the concentration of any solute in a solution.
Mathematically,
Molarity= number of moles of solute/volume of solution in litre
Where,
moles= ?
volume= 1.00 L
Molarity=0.050 M
Substituting values in equation, we get
0.050=number of moles of solute/1.00
number of moles of solute=0.050moles
Therefore, 0.050moles of sodium hypobromite (NaBrO) should be added to 1.00 L of 0.050 M hypobromous acid (HBrO) to form a buffer solution of pH 9.15
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at what point does the radiation start to affect satellites in the atmosphere
Answers
What changes sodium pellets to liquid
Answers
Answer:
when placed in water, a sodium pellet catches on fire as hydrogen gas is liberated and sodium hydroxide forms. chemical change = fire is a sign of chemical reaction.
Explanation:
When placed in water the sodium pellets catch the fire and liberate the hydrogen gas. On mixing with water solid sodium forms a colorless basic solution.
What are the properties of sodium?Sodium is a soft metal. It is a very reactive element with a low melting point. Sodium reacts very quickly with water, snow, and ice to produce sodium hydroxide and hydrogen. It is an alkali metal and the sixth most abundant metal on earth. It has a silvery white color.
It has a strong metallic luster. On reacting with oxygen it produces sodium oxide which on reacting with the water produces sodium hydroxide.
It is used to improve the structure of certain alloys and soaps. It is also used in the purification of metals. Sodium is also present in sodium chloride, an important compound found in the environment.
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Which of the following equations correctly describes how to calculate net income? a. net income = (cost of goods sold) - (net sales) - (operating expenses) b. net income = (operating expenses) - (cost of goods sold) - (net sales) c. net income = (operating expenses) + (cost of goods sold) - (net sales) d. net income = (net sales) - (cost of goods sold) - (operating expenses) Please select the best answer from the choices provided A B C D Mark this and return
Answers
Answer:
The answer is D. net income= (net sales) - (cost of goods sold)- (operating expenses).
Explanation:
A chemist encounters an unknown metal. They drop the metal
into a graduated cylinder containing water, and find the volume
change is 5.3 mL. If the metal weighs 2.3 g, what is the density of
the metal?
Answers
Answer:
The answer is 0.43 g/mLExplanation:
The density of a substance can be found by using the formula
\(density = \frac{mass}{volume} \\\)
From the question
mass of metal = 2.3 g
volume = 5.3 mL
So we have
\(density = \frac{2.3}{5.3} \\ = 0.4339622641509...\)
We have the final answer as
0.43 g/mLHope this helps you
i need the answers to this chemistry quiz
Answers
9. The number of mole of the argon contained in the tank is 2.39 moles
10. The volume (in liters) of H₂O produced from the reaction is 73.5 liters
9. How do i determine the number of mole?The number of mole of the argon contained in the tank can be obtained as follow:
Volume of balloon (V) = 6.25 LPressure (P) = 9.4 atmTemperature (T) = 26 °C = 26 + 273 = 299 KGas constant (R) = 0.0821 atm.L/mol KNumber of mole (n) =?PV = nRT
Inputting the given parameters, we have:
9.4 × 6.25 = n × 0.0821 × 299
Divide both sides by (0.0821 × 299)
n = (9.4 × 6.25) / (0.0821 × 299)
n = 2.39 moles
Thus, the number of mole of the argon gas in the tank is 2.39 moles
10. How do i determine the volume of H₂O produced?The volume of H₂O produced can be obtained as shown below:
4NH₃(g) + 5O₂(g) -> 6H₂O(g) + 4NO(g)
From the balanced equation above,
4 liters of NH₃ reacted to produced 6 liters of H₂O
Therefore,
49 liters of NH₃ will react to produce = (49 × 6) / 4 = 73.5 liters of H₂O
Thus, the volume of H₂O produced is 73.5 liters
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Will y’all find this answer real quick for me !!
Answers
The mass (in grams) of sodium carbonate, Na₂CO₃ required to produce 85 grams of barium carbonate, BaCO₃ is 45.7 grams
How do i determine the mass of sodium carbonate, Na₂CO₃ required?First, we shall observe the balanced equation to obtain useful information. This is shown below:
Na₂CO₃ + BaSO₄ -> BaCO₃ + Na₂SO₄
Molar mass of BaCO₃ = 197 g/molMass of BaCO₃ from the balanced equation = 1 × 197 = 197 g Molar mass of Na₂CO₃ = 106 g/molMass of Na₂CO₃ from the balanced equation = 1 × 106 = 106 gFrom the balanced equation above,
197 g of BaCO₃ were obtained from 106 g of Na₂CO₃
With the above information, we can obtain the mass of sodium carbonate, Na₂CO₃ required to produce 85 grams of barium carbonate, BaCO₃. This is illustrated below:
From the balanced equation above,
197 g of BaCO₃ were obtained from 106 g of Na₂CO₃
Therefore,
85 g of BaCO₃ will be obtain from = (85 × 106) / 197 = 45.7 g of Na₂CO₃
Thus, we can conclude from the above calculation that the mass of sodium carbonate, Na₂CO₃ required is 45.7 grams
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Please select the word from the list that best fits the definition
Represents a range of responses to a question:
Caption
Legend/Key
Scale
Answers
Answer:
The answer is B(scale)
Explanation:
Since the question asked about a range, the scale would be the most logical answer since scales are used to measure.
Answer:
the answer is C.
Explanation:
2. Based on what you read, how do sedimentary rocks differ from igneous rocks?
A. Sedimentary rocks are formed by small pieces called sediments, while igneous rocks are formed by heat and pressure.
B. Sedimentary rocks are formed by small pieces called sediments, while igneous rocks are formed when hot molten lava is cooled down.
C. They are not different, in fact sedimentary rocks are formed the same way that igneous rocks are formed.
D. They have different colors and textures.
Answers
Answer:
B
Explanation:
Igneous rocks (from the Latin word for fire) form when hot, molten rock crystallizes and solidifies. The melt originates deep within the Earth near active plate boundaries or hot spots, then rises toward the surface.
3. For the carbon in the structure shown, determine the followi
H
(a) Hybridization:
(b) Molecular shape_
(c) Number of electron domains:
(d) Bond Angle:
Answers
The carbon that is SP2 hybridized in the compound is carbon 4 (C4).
What is the hybridization?When we talk about the hybridization of the carbon atom, we mean the fact that the orbitals that are in the carbon atom are mixed in such a way that the orbitals that have the appropriate energy to be able to participate in the chemical bonds are formed.
As such looking at the compound that we have been shown in the image, we can see that not all the carbon atoms would be at the same state of hybridization.
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balance the equation
Answers
Answer: the balanced equation is
6KOH + Cl₂ ⇒ 5KCl + KClO₃ + 3H₂O
Explanation:
Given equation
KOH + Cl₂ ⇒ KCl + KClO₃ + H₂O
let us first balance Cl on the right-hand side
KOH + Cl₂ ⇒ 2KCl + KClO₃ + H₂O
next, lets balance K on the left-hand side
3KOH + Cl₂ ⇒ 2KCl + KClO₃ + H₂O
since we have H₂ on the right-hand side to equate H₂ we need to make the H coefficient even on the right-hand side so we multiply it by 2 so we get
6KOH + Cl₂ ⇒ 2KCl + KClO₃ + 3H₂O
now we balance K on the right-hand side
6KOH + Cl₂ ⇒ 5KCl + KClO₃ + 3H₂O
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___ H2SO4 + __KOH → __K2SO4 +__H2 Obalance the equation
Answers
Explanation:
We have to balance this equation:
___ H₂SO₄ + __ KOH ----> __ K₂SO₄ + __ H₂O
The first step is to determine the number of atoms of each element that we have on both sides of the equation.
___ H₂SO₄ + __ KOH ----> __ K₂SO₄ + __ H₂O
K: 1 K: 2
S: 1 S: 1
H: 3 H: 2
O: 5 O: 5
We have 1 atom of K on the left side of the equation and there are 2 atoms of K on the rigth side of the equation. To balance the number of K atoms we can change the coefficient for KOH and write a 2 there.
___ H₂SO₄ + 2 KOH ----> __ K₂SO₄ + __ H₂O
K: 2 K: 2
S: 1 S: 1
H: 4 H: 2
O: 6 O: 5
We balanced the K. The S atoms are already balanced. Let's focus on H. We have 4 atoms of H on the left and 2 atoms of H on the right side of the equation. We can change the coefficient for H₂O and write a 2 there to get 4 atoms of H on the right side.
___ H₂SO₄ + 2 KOH ----> __ K₂SO₄ + 2 H₂O
K: 2 K: 2
S: 1 S: 1
H: 4 H: 4
O: 6 O: 6
We balanced the H and we also changed the number of O atoms on the right side and also balanced them. The balanced equation is:
H₂SO₄ + 2 KOH ----> K₂SO₄ + 2 H₂O
Answer: H₂SO₄ + 2 KOH ----> K₂SO₄ + 2 H₂O
what is 1.01 km to mm in scientific notation
Answers
Answer:
= 3.456 × 1011
Explanation:
Plz!!!!Plz!!!!!help help
Answers
Answer:
false
Explanation:
category 1 is the worst
What is the specific heat capacity of gold if it requires 48.8 J to raise the temperature of 15 grams of gold 25oC?
Answers
Answer:
0.13 J/gC i believe.
Explanation:
Answer:
130.133 J/(kg·K)
Explanation:
Result in other units:
0.130133 J/(g·K)
31.0876675695 cal/(kg·K)
0.0310876675695 kcal/(kg·K)
0.130133 J/(g·°C)
A 40.80 gram sample of copper is heated in the presence of excess sulfur. A metal sulfide is formed with a mass of 51.09 g. Determine the empirical formula of the metal sulfide.
Answers
Answer:
Cu₂S
Explanation:
From the question,
Cu S
Mass: 40.80 g 51.09-40.80 = 10.29 g
Mole ratio: 40.80/63.5 10.29/32.1
0.64 : 0.32
Divide by the smallest,
0.64/0.32 : 0.32/0.32
2 : 1
Therefore,
Empirical formula = Cu₂S.
_Pb(OH)2+_HCl -> _H2O+_PbCl2
Answers
Answer:
20 + CIPb
Explanation:
Use the commutateive proptery to reoder the terms
Answer:
PB(OH)2+ 2HCl --> 2H2O + PbCl2