s Data: Cu 63.55 g mol¹; Ag 107.87 g mol-¹
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Please help me!!!

Answer:

Particles in the plasma move randomly, but particles in a solid vibrate in one place.

Explanation:

Answer:

Other physical properties, such as the melting temperature of iron or the freezing temperature of water, can only be observed as matter undergoes a physical change. ... In each of these examples, there is a change in the physical state, form, or properties of the substance, but no change in its chemical composition.

Explanation:

i hope this helps :)

The correct answer is "decendent." Embalming authorization may be given by the bailee, next of kin, or spouse, but not by the decedent.

The term "decedent" refers to the person who has died; they are unable to give consent for embalming or any other post-mortem procedures. According to legal and cultural customs, the choice to embalm is often taken by the designated representative, such as the bailee (person in charge of the body), next of kin, or spouse.

Hence, embalming authorization may be given by the bailee, next of kin, or spouse, but not by the decedent.

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Hey there!:

Molar mass N₂ = 28.0134 g/mol

28.0134 g ------------------- 22.4 L (at STP )

mass  N₂ -------------------- 50.0 L

mass N₂ = 50.0 x 28.0134 / 22.4

mass N₂ = 1400.67 / 22.4

mass N₂ = 62.529 g

Hope this helps!

Answer:

(C3H8) produces 660 g of CO2 and 360 g of H2O

Explanation:

The balanced chemical equation for the combustion of propane (C3H8) is:

C3H8(g) + 5O2(g) → 3CO2(g) + 4H2O(g)

This equation tells us that for every molecule of propane (C3H8) that reacts with 5 molecules of oxygen (O2), 3 molecules of carbon dioxide (CO2) and 4 molecules of water (H2O) are produced.

So, if we have 220. g of propane (C3H8), we can find the amount of CO2 and H2O produced by using the mole ratio from the balanced equation:

1 mole C3H8 reacts with 5 moles of O2 to produce 3 moles of CO2 and 4 moles of H2O

We can find the number of moles of C3H8 by dividing the mass by the molar mass of C3H8 (44 g/mol):

220 g / 44 g/mol = 5 moles C3H8

So, the number of moles of CO2 and H2O produced can be found by multiplying the number of moles of C3H8 by the mole ratio:

3 moles CO2 = 3 moles CO2/1 mole C3H8 * 5 moles C3H8 = 15 moles CO2

4 moles H2O = 4 moles H2O/1 mole C3H8 * 5 moles C3H8 = 20 moles H2O

Finally, we can convert the number of moles of CO2 and H2O to grams by multiplying by their molar masses (44 g/mol for CO2 and 18 g/mol for H2O):

15 moles CO2 * 44 g/mol = 660 g CO2

20 moles H2O * 18 g/mol = 360 g H2O

So, the combustion of 220 g of propane (C3H8) produces 660 g of CO2 and 360 g of H2O.

Answer:

a)  Fe₂S₃(s) + 6H⁺(aq) ---> 6HBr(g) + Fe³⁺

b) Net ionic equation: Cu²⁺(aq) + CO₃²⁻(aq) ---> CuCO₃(s)

c) No reaction

d) Net ionic equation: Bi(OH)₃(s) + 3H⁺(aq) ---> Bi³⁺(aq) + 3H₂O

Explanation:

a) This is a double displacement reaction between solid iron(iii) sulphide and hydrobromic acid to produce hydrogen sulphide gas. The full and net equations of the reaction are given below:

Fe₂S₃(s) + 6HBr(aq) ---> 2FeBr₃ + 3H₂S(g)

Net ionic equation:  Fe₂S₃(s) + 6H⁺(aq) ---> 6HBr(g) + Fe³⁺

b) This is a double displacement reaction between potassium carbonate and copper (ii) nitrate to produce insoluble copper (ii) carbonate. The full and net equations of the reaction are given below:

K₂CO₃(aq) + Cu(NO₃)₂(aq) ---> KNO₃(aq) + CuCO₃(s)

Net ionic equation: Cu²⁺(aq) + CO₃²⁻(aq) ---> CuCO₃(s)

c) No reaction as no precipitate is formed

d) This is a neutralization reaction between bismuth (iii) hydroxide and trioxonitrate (v) acid to produce sat and water. The full and net equations of the reaction are given below:

Bi(OH)₃(s) + 3HNO₃(aq) ---> Bi(NO₃)₃(aq) + 3H₂O(l)

Net ionic equation: Bi(OH)₃(s) + 3H⁺(aq) ---> Bi³⁺(aq) + 3H₂O

Answer:

Explanation:

A Basketball Weigh in Grams? A 29.5 inch (75 cm) basketball typically weighs about 624 grams (g). A 28.5 inch (72.4 cm) basketball weighs about 567 grams (g).

Answer:

don't know what to do

Explanation:

i don't know the answer

Answer:

Attached below diagram of the eight diastereomers

The Isomer that reacts so slowly is DIASTEREOMER 8

Explanation:

The Isomer that reacts so slowly is DIASTEREOMER 8 in an E2 reaction and this is because no pair of chlorine and hydrogen atoms can assume the anti-periplanar orientation that is preferred in an E2 elimination

attached below is Diagram of the eight diastereomers ( screen shot from my drawing tool )

The conversion of 30 × 10¹⁰ cm/s to ft/s using the conversion factor is 9.84 × 10⁸ ft/s.

A conversion factor is a value which is used to convert between two quantities.

A conversion factor is important when comparing two units.

The conversion factor between cm to feet is as follows:

1 feet = 30.48 cm

Therefore 30 × 10¹⁰ cm/s = 30 × 10¹⁰ × 1/30.48

30 × 10¹⁰ cm/s = 9.84 × 10⁸ ft/s

In conclusion, the conversion factor used to convert cm to ft is 1 ft/30.48 cm.

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Answer:

is D I guess; photosphere

To increase the gravitational force between the balloon and the golf ball, It should be filled with lead pieces. Option D

A substance's density, which measures its mass in relation to its volume, determines how much gravitational force it produces.

Lead bits are one of the suggested materials, and they are the one that would most likely boost the gravitational force. The density of lead is much higher than that of the other listed materials.

The high density of lead will result in an increase in the gravitational pull between the balloon and the golf ball if Jamie fills the balloon with lead bits.

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According to the explanation given in our previous session, now we have a similar question but with a slight difference, but first let's set up the reaction:

2 RbNO3 -> 2 RbNO2 + O2

We have 5.0 moles of RbNO3

From the molar ratio we see that 2 moles of RbNO3 is equal to 1 mol of O2, therefore if we have 5 moles of RbNO3, we will have 2.5 moles of O2 being produced.

Since the question is asking "how many liters" we have to assume that we are dealing with gases and these gases are at STP (standard temperature and pressure), which is T = 273K and P = 1 atm, in these specfici conditions, 1 mol of gases will have a volume of 22.4 Liters, therefore if O2 has 2.5 moles of O2

1 mol = 22.4L

2.5 moles = x L

x = 56 Liters of O2 are being produced with 5.0 moles of RbNO3

Answer:

Explanation:

T

Answer:

for this one you would have to divide 19.9g by the kinetic energy 1.0 and you would get your answer.

Explanation:if you would give me brainiest that would help a lot :)

The percent ionic character of a molecule can be calculated using the following equation:

Percent Ionic Character = 100 × (μ/r)^2

Where μ is the dipole moment in Debye and r is the bond length in picometers.

Plugging in the given values, we get:

Percent Ionic Character = 100 × (1.39/121)^2

Percent Ionic Character = 100 × (0.0115)^2

Percent Ionic Character = 1.32%

What is dipole moment?

The dipole moment is a measure of the separation of positive and negative charges in a molecule. It is represented by the vector sum of the individual bond dipole moments and is measured in debyes (D).

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The chemical formula for x and y is Cu₂O and CuO. The mass cooper which can react with 0.5g of oxygen to yield x and y is 2.745 g.

A chemical formula is a phrase that lists the constituent parts of a compound together with their relative quantities. No subscript is used if there is just one atom of a certain kind. A subscript is added to the symbol of an atom if it contains two or more of a certain type of atom.

1. 1.535 g of X → 1.365 g of Copper

1.535 – 1.365 = 0.170g of Oxygen

Atomic weight of Cu = 63.5,

Atomic weight of Oxygen = 16

For Cu 1.365 g / 63.5 = 0.02 mol

For Oxygen 0.170 g / 16 = 0.01 mol

X = Cu₂O

1.450 g of Y → 1.160 g of Cu

1.450 – 1.160 = 0.290 g of Oxygen

For Cu = 1.160 g / 63.5 = 0.018 mol

For Oxygen = 0.290 g / 16 = 0.018 mol

Y = CuO

2. The total mass of Oxygen = 0,170 g + 0,290 g

= 0.460 g

Total mass of Cu = 1.160 g + 1. 365 g

= 2.525 g

0.460 g of Oxygen → 2.525 g of Cu

0.500 g of Oxygen → (2.525 x 0.5) / 0.460

= 2.745 g of Cu

Thus, The law of multiple proportions was formulated by John Dalton in 1804.

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Answer:

Its D and E

Explanation:

i took the test and the other guy who answered gave u half of the answer

hope this helps

pls mark brainliest

The information which can be inferred about the Sun according to the graph include:

This is defined as a pictorial representation of data in an organized manner.

From the graph, we can infer that the Sun has an intermediate temperature and is less brighter than most stars.

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Answer:

This question appears incomplete

Explanation:

This question appears incomplete because the data provided only makes it possible to calculate the certainty of the acetic acid content per total volume of the vinegar. Thus, the 4% means for every 100 mL of the vinegar, there is 4 mL of acetic acid present. To calculate the volume of acetic acid in any other volume of vinegar, the formula will be

volume of acetic acid = 4/100 × total volume of vinegar

The activation energy of this reaction is approximately -13.770 J/mol.

1. To graphically determine the activation energy, we need to plot two points. The given data points are:

  Point 1: (1, -1.275)

  Point 2: (2, 0.379725)

2. The rise is the change in the y-coordinate between the two points:

  Rise = y2 - y1 = 0.379725 - (-1.275) = 1.654725

3. The run is the change in the x-coordinate between the two points:

  Run = x2 - x1 = 2 - 1 = 1

4. The slope of the line formed by these two points can be calculated using the formula:

  Slope = rise / run = 1.654725 / 1 = 1.654725

5. The activation energy (Ea) can be determined using the equation:

  Ea = -R * slope

 Here, R is the ideal gas constant, which is approximately 8.314 J/(mol·K).

6. Plugging in the values:

  Ea = -8.314 * 1.654725 = -13.770 J/mol

Note that the activation energy is negative because it represents the energy difference between the reactants and the transition state (higher energy) in an exothermic reaction.

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The electric current is  0.025 A

Electric current refers back to the go with the flow of energy in an electronic circuit and to the amount of strength flowing through a circuit. it's far measured in amperes (A). the bigger the cost in amperes, the more energy is flowing within the circuit.

Ag+ + e¯ →Ag

1F deposits 107.87 g/mol (molecular mass) of silver

1F = 96500 C

Let, 107.87 g/mol needed = 96500 C

Number of coulombs required to deposit 0.3650 g of silver =(96500/107.87) 0.3650  

Q = 326.5 C

According to Faraday’s law, Q = I x t

I = 326.5 C / (216 x 60 s) = 0.025 A

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Answer:

double replacement

Explanation:

Answer:

Explanation:

balance

2 C2H6 + 7  O2  --> 4 CO2 + 6 H2O

given 360 g H20 (g)

required =586.67 g CO2

360 g H20 x (1mole/18 g H20) X (4 mole CO2/6 moles H20) X (44g CO2/1mole) =586.67 g CO2

Answer:

true

Explanation:

Because the changes in state of matter would be considered

Answer:

             0.1608 mol/L

Explanation:

Calculate moles as,

Mole = Mass/M.Mass

Mole = 31.4 g / 78.045 g/mol

Mole = 0.402 mol

Now,

Molarity = Moles / Vol. in L

Molarity = 0.402 mol / 2.5 L

Molarity = 0.1608 mol/L

Answer:

Find answers below;

Explanation:

Thin layer chromatography (TLC) is used to separate mixtures of substances into their components. It has a stationary phase (a solid, or a liquid supported on a solid) and mobile phase, usually the solvent or a liquid. The mobile phase flows through the stationary phase and carries the components of the mixture with it. Different components travel at different rates based on their polarity (affinities toward stationary phase and mobile phase). These components are measured by taking how far the compound travelled and the distance travelled by solvent. When the solvent front reaches the top of the plate, the plate is removed from the beaker and the position of the solvent is marked with another line before it has a chance to evaporate. These measurements are then used to calculate the Rf value, represented in the following equation:

\( Rf = \frac {distance \; traveled \; by \; compound}{distance \; traveled \; by \; solvent} \)

Answer:

~ 3.5 x 10^21

Explanation:

Mole weight of Ca Cl2   ( from periodic table ) = ~~ 111 gm

.645 gm / 111 gm / mole   X  6.022 x 10^23  =

Question 1 : the empirical formula for the compound is CBr₄.

Question 2 : the molecular formula for the compound is CBr₄.

To determine the empirical formula and molecular formula of the compound, we need to analyze the given percentage composition and molecular weight. Let's go through the process step by step:

Empirical Formula:

The percentage composition by mass states that the compound contains 3.622% carbon and 96.38% bromine. We can assume a 100g sample of the compound to simplify the calculations.

Mass of carbon = (3.622/100) * 100g = 3.622g

Mass of bromine = (96.38/100) * 100g = 96.38g

Next, we need to find the moles of each element. We can use their atomic masses to convert the masses to moles.

Atomic mass of carbon (C) = 12.01 g/mol

Atomic mass of bromine (Br) = 79.90 g/mol

Moles of carbon = Mass of carbon / Atomic mass of carbon = 3.622g / 12.01 g/mol ≈ 0.3017 mol

Moles of bromine = Mass of bromine / Atomic mass of bromine = 96.38g / 79.90 g/mol ≈ 1.205 mol

To find the simplest whole-number ratio between the elements, we divide both moles by the smallest number of moles (0.3017 mol in this case):

Moles of carbon (C) = 0.3017 mol / 0.3017 mol = 1

Moles of bromine (Br) = 1.205 mol / 0.3017 mol ≈ 4

Therefore, the empirical formula for the compound is CBr₄.

Molecular Formula:

Given that the molecular weight (molar mass) of the compound is 331.6 amu, we need to compare it with the empirical formula weight.

Empirical formula weight = (Atomic mass of carbon × Number of carbon atoms) + (Atomic mass of bromine × Number of bromine atoms)

= (12.01 amu × 1) + (79.90 amu × 4) = 12.01 amu + 319.6 amu = 331.61 amu

The molecular weight is very close to the empirical formula weight, indicating that the empirical formula represents the molecular formula as well. Therefore, the molecular formula for the compound is also CBr₄.

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