Calculate the molar mass of Al(OH)3.
Molar mass of Al(OH)3 =
+
Example: H₂O
H*
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molar mass=2H*(1) +10* (16) = 18 g/mol
+
0*
g/mol (total)

Answer:

A brick of salt measuring 10.0 cm x 10.0 cm x 2.00 cm has a mass of 433 g. What is its density? Step 1: Calculate the volume. V = lwh = 10.0 ...

Missing: Dam/ ‎43.0

The compounds made of the following molecules can be ordered by increasing melting point as follows: CH4 < H2O < NaCl.

1. CH_{4} (Methane) - This compound is a non-polar covalent compound, meaning that its melting point is determined by the weak dispersion forces between the molecules. Therefore, CH_{4} has the lowest melting point.
2. H_{2}O (Water) - This compound has polar covalent bonds and exhibits strong hydrogen bonding, which leads to a higher melting point than CH_{4}. However, it is still lower than the melting point of an ionic compound.
3. NaCl (Sodium Chloride) - This compound is an ionic compound, with strong electrostatic forces between the positively charged sodium ions and the negatively charged chloride ions. This results in a higher melting point than both CH_{4} and H_{2}O.
By analyzing the intermolecular forces present in CH_{4}, H_{2}O, and NaCl, we can order these compounds by increasing melting point as CH_{4} < H_{2}O < NaCl.
Considering the types of chemical bonds and intermolecular forces present in each compound (non-polar covalent bonds in CH_{4}, polar covalent bonds and hydrogen bonding in H_{2}O, and ionic bonds in NaCl), we can determine their melting points. In general, ionic compounds have the highest melting points, followed by compounds with hydrogen bonding, and finally non-polar covalent compounds. With this information, we can confidently order the compounds by increasing melting point asCH_{4} < H_{2}O < NaCl.

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The given redox reaction can be represented in the following way: MnO₂ → MnO⁴⁻ + Ag → Ag+

To balance the redox reaction, the following steps are to be followed:

1: First, balance the net ionic equation with the help of half-reactions:

MnO2 → MnO⁴⁻+ e- [Oxidation Half-Reaction]

Ag+ + e- → Ag [Reduction Half-Reaction]

2: Determine the number of electrons that are required to balance the half-reactions. The oxidation half-reaction requires five electrons.

MnO₂ → MnO⁴⁻+ 5e-

The reduction half-reaction requires one electron.

Ag+ + e- → Ag

3: Find the least common multiple of the electrons required in the half-reactions, and use it to balance the equation. The least common multiple of 5 and 1 is 5. To balance the equation, multiply the oxidation half-reaction by 1 and the reduction half-reaction by 5. This will give us the following balanced equation:

5MnO₂ + 16H₂O + Ag → 5MnO⁴⁻ + 8OH- + 4Ag+

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The product formed when cis-3-methyl-3-hexene reacts with hydrogen bromide is 2s,3r)-3-bromo-3-methylhexane This happens through  SN1 reaction.

Cis-3-methyl-3-hexene will react with HBr through SN1 reaction. First, the H from HBr will add to the less substituted carbon in the double bond following Markonikov's rule to form a stable tertiary carbocation intermediate.

The ionic addition of hydrogen halides to alkenes proceeds through SN1. The first step involves the protonation of the alkene by the hydrogen halide that is present. This step follows the Markonikov's rule, which predicts that the proton will add to the less substituted carbon in the double bond or to the more substituted carbon atom to form the more stable carbocation. The next step is the addition of the halide ion to the carbocation. Here, the halide can add to either side of the carbocation; thus, forming a mixture of R and S products.

Cis-3-methyl-3-hexene will react with HBr Through SN1. First, the H from HBr will add to the less substituted carbon in the double bond (Markonikov's rule) to form a stable tertiary carbocation intermediate. Br− will then add to either side of the carbocation to form a mixture of (3S)-3-bromo-3-methylhexane and (3R)-3-bromo-3-methylhexane.

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The statement that condensation is vaporization that occurs at the surface of a liquid and can happen at nearly any temperature is False.

Condensation is the process by which a gas or vapor turns into a liquid. It is the opposite of vaporization, which is the process by which a liquid turns into a gas or vapor.

Vaporization can occur at any temperature, but condensation typically occurs when a gas or vapor is cooled below its dew point, which is the temperature at which the vapor begins to condense into a liquid. Condensation can also occur when the pressure on a gas or vapor is increased, forcing it to condense into a liquid.

So, condensation does not occur at nearly any temperature, but rather at temperatures below the dew point of the gas or vapor.

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Answer:

0.8 mph

Explanation:

36 cm         1 m              1 km          0.62 mi       60 sec       60 min         0.8 mi

---------- X ------------ X ------------- X -------------- X ------------ X -------------- =  -----------

  sec         100 cm      1000 m          1 km             min            1 Hr              Hr

Answer: created, destroyed, element, product

Explanation: The law of conservation of mass states that matter can neither be created nor destroyed but is transferred from one form to another. In other words, the mass of one element at the beginning of the reaction must be equal to the mass of the element at the end of the reaction.
So...the law of conservation of mass states that during a chemical reaction, mass/matter is not CREATED or DESTROYED and because of this law, there must be exactly the same number and kind of ELEMENTS on each side of a chemical equation.
To check if an equation is balanced or not, simply count the number of atoms of each element on the reactant side of the equation and check to see if there are the same number of atoms of each element on the PRODUCT side of the equation. If so, it is balanced.

The statement "Substances which have a very low solubility in water are likely to have a positive/negative ∆Hsol" is generally true, with some exceptions. ΔHsol refers to the enthalpy change associated with the dissolution of a substance in water. If the value of ΔHsol is negative, then the process of dissolving the substance in water releases energy (i.e., it is exothermic), and the substance is said to be soluble in water. Conversely, if ΔHsol is positive, then the process of dissolving the substance in water requires energy (i.e., it is endothermic), and the substance is said to be insoluble or only slightly soluble in water.

Substances that have a very low solubility in water are typically hydrophobic (water-repelling), and their intermolecular forces of attraction are stronger than their forces of attraction to water molecules. Therefore, it requires a significant amount of energy to break these intermolecular forces and allow the substance to dissolve in water, resulting in a positive ΔHsol. However, there are some exceptions, such as some salts, which have a high lattice energy and are highly soluble in water despite having a positive ΔHsol.

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Answer:

E conduct electricity when melted

Explanation:

They can not produce electricity until dissolved/ melted in water

Answer:

Organs

Explanation:

Organs such as ears which enables animals to hear, The eyes which gives vision, the nose which is responsible for smelling and perceiving odors, The skin which enables animals to feel and the taste buds which permits animals to make distinction between sweetness, bitterness, sour are collectively called the sense Organs. The nervous systems principally made of a connection of neurons allows the trasmission of signals between different body parts. The purpose served by the sense Organs and nervous systems makes it possible makes the possibility of the nervous systems working through the sense Organs possible.

The statement " Iron has a higher melting point because the bonds in iron are stronger" will explain the bond strength affect the physical property of iron.

Three factors determine how strong a metallic bond will be: how many electrons leave the metal and become delocalized. Charge carried by the cation (metal). the cation's dimension.

As the bond will stronger , it will take too much energy to break the bonds. hence, iron has a higher melting point because the bonds in iron are stronger.

Therefore, the correct answer will be option (A).

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Answer:

wind is the correct answer

When elements chemically combine, the resulting compound has (b) different properties from the uncombined elements. This is due to the formation of new chemical bonds that result in a unique arrangement of atoms with different physical and chemical properties than the individual elements.

The compound will have a distinct set of physical and chemical properties, such as melting and boiling points, solubility, reactivity, and density, that differ from those of its component elements. The ratio of atoms in a compound is fixed and can be expressed by a chemical formula, which reflects the unique arrangement of atoms within the compound.

Thus, the combination of elements leads to the formation of a new substance with its own unique set of properties that distinguish it from the original elements.

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True, the GCC compiler used on the guru.itap.purdue.edu server this semester allows a variable to be declared and initialized in the first expression of a for loop, as mentioned on pages 318-319.

True. the gcc compiler used on the guru.itap.purdue.edu server this semester does permit a variable to be declared and initialized in the first expression of a for loop.

The GNU Project created the optimising compiler known as the GNU Compiler Collection (GCC), which supports a wide range of operating systems, hardware architectures, and programming languages. Under the terms of the GNU General Public Licence (GNU GPL), the Free Software Foundation (FSF) makes GCC available as free software. A crucial part of the GNU toolchain, GCC serves as the default compiler for the majority of GNU and Linux kernel-related projects. In 2019, GCC had about 15 million lines of code, making it one of the largest free programmes ever.[4] As a tool and an example, it has been crucial to the development of free software.

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The gcc compiler as used on the guru.itap.purdue.edu server this semester will permit a variable to be declared and initialized in the first expression of a for loop. See pages 318-319, false.

The GNU Project produced the GNU Compiler Collection (GCC), an optimizing compiler that supports a broad range of operating systems, hardware architectures, and programming languages.

The Free Software Foundation (FSF) distributes GCC as free software under the provisions of the GNU General Public Licence (GNU GPL). GCC is an essential component of the GNU toolchain, serving as the default compiler for the vast majority of GNU and Linux kernel-related projects.

GCC has over 15 million lines of code in 2019, making it one of the largest free programs ever. It has been critical to the development of free as a tool and an example.

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Answer:

Explain that as the water evaporates, water molecules go into the air. The water molecules that evaporate become a gas called water vapor. Only the water evaporates, leaving the sodium and chloride ions behind. The sodium and chloride ions attract each other and re- form salt crystals.

Hope this helps!! :D

Answer:

Thus, the required heat is 79kJ 79 k J .

Explanation:

i think its the right bottem one

Answer:

degree Celsius

Answer:

D

Explanation:

Electrons are being filled according to the increasing other of their sublevel energy

Answer:

Endothermic animals are those that must generate their own heat to maintain an optimal body temperature.

Explanation:

Answer:

There

Explanation:

Endothermic animals are those that must generate their own heat to maintain an optimal body temperature. In ordinary language, these animals are commonly referred to as "warm-blooded." The term endotherm comes from the Greek endon, meaning within, and thermos, which means heat

Answer:

0.3M

Explanation:

Find the amount concentration of the anion in a 0.100 mol/L solution of Al(CIO3)3.

FOR EVERY MOLE OF Al(CIO3)3., THERE ARE 3 MOLES OF CIO3.

SO IN A 0.00m SOLUTION, THE CONCENTRATION OF THE ANION

ClO3 IS 3X0.1M = 0.3M

.

Answer:

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

\(n = \frac{N}{L} \\ \)

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

\(n = \frac{4.88 \times {10}^{23} }{6.02 \times {10}^{23} } = \frac{4.88}{6.02} \\ = 0.810631229...\)

We have the final answer as

Hope this helps you

Answer:

Cosmetics

Explanation:

The products of chemical industries that are sued to care for the skin and make people more attractive are cosmetics.

Cosmetics are chemical products used for beauty enhancement.

This problem is providing us with the mass of solid sodium chloride and the volume of water it was dissolved in. Thus, after diluting it, the volume of the stock solution was required and found to be 60. mL according to:

In chemistry, when we are given a stock solution with specified volume and concentration, one is able to dilute it in order to use it for a specific purpose. This, by holding the number of moles constant, one can write:

\(C_1V_1=C_2V_2\)

Where the subscript 1 stands for the stock solution and 2 for the diluted one. Thus, one first calculate the initial concentration with the mass and volume:

\(M=\frac{70.13g/(58.44 g/mol)}{0.400L}=3.00M\)

Next, we solve for the volume of the stock solution, V1, as follows:

\(V_1=\frac{C_2V_2}{C_1}\)

Finally, we plug in the given data to obtain the result:

\(V_1=\frac{1.2M*150mL}{3.00M}\\ \\V_1=60.mL\)

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The concentration of the stock solution is 11.625m.

The concentration of the stock solution can be calculated using the formula:

concentration of stock solution = (concentration of final solution x volume of final solution) / volume of stock solution

First, let's calculate the concentration of the final solution using the given information:

concentration of final solution = 3m

volume of final solution = 1.55l

Next, we can plug in these values along with the volume of the stock solution (0.4l) into the formula:

concentration of stock solution = (3m x 1.55l) / 0.4l

Simplifying this expression, we get:

concentration of stock solution = 11.625m

Therefore, the concentration of the stock solution is 11.625m.

To find the concentration of the stock solution, we can use the formula that relates the concentration, volume, and amount of solute. By rearranging the formula and substituting the given values, we can solve for the unknown concentration of the stock solution.

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Approximately 777.6 grams of water is needed to make 7.2 moles of glucose based on the balanced equation.

The balanced equation provided is:

6CO2 + 6H2O -> C6H12O6 + 6O2

From the equation, we can see that for every 6 moles of water (H2O), 1 mole of glucose (C6H12O6) is produced. Therefore, we need to determine the amount of water required to produce 7.2 moles of glucose.

The mole ratio between water and glucose is 6:1. This means that for every 6 moles of water, we obtain 1 mole of glucose. To find the amount of water needed for 7.2 moles of glucose, we set up a proportion using the mole ratio:

(6 moles H2O / 1 mole glucose) = (x moles H2O / 7.2 moles glucose)

Solving for x, we can cross-multiply:

6 moles H2O * 7.2 moles glucose = x moles H2O * 1 mole glucose

43.2 moles H2O = x moles H2O

Therefore, we need 43.2 moles of water to produce 7.2 moles of glucose.

To convert moles of water to grams, we need to know the molar mass of water, which is approximately 18 g/mol. Using the molar mass, we can calculate the mass of water needed:

Mass of water = moles of water * molar mass of water

Mass of water = 43.2 moles * 18 g/mol

Mass of water = 777.6 g

Therefore, approximately 777.6 grams of water is needed to make 7.2 moles of glucose based on the balanced equation.

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B: 2

If it's right plz give brainliest lol <3

The balance equation of the reaction is

\(3KClO_3+AlP\to Al(ClO_3)_3+K_3P\)

The species in the reaction are;

Let's try to balance the potassium on both sides of the reaction.

\(KClO_3+AlP\to Al(ClO_3)_3 + K_3P\\3KClO_3+ AlP \to Al(ClO_3)_3 + K_3P\\\)

To do this, we need to add 3 to the reactant side of the reaction to balance the effect on the product side of the reaction.

The balance equation of the reaction is

\(3KClO_3+AlP\to Al(ClO_3)_3+K_3P\)

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Answer:

ya tu sabes cómo se los aseguro

\(2Cu + 2Ag^+ \rightarrow 2Cu^{2+} + 2Ag\) is a balanced overall reaction from these unbalanced half-reactions.

A chemical equation that is balanced has the same amount of atoms of each element on both sides of the equation. A chemical reaction must be balanced in order for mass to be preserved, which means that all of the atoms present in the reactants must also be present in the products. One must change the equation's coefficients in order to balance a response. The moles of each compound involved in the reaction are represented by the coefficients.

\(Cu \rightarrow Cu^{2+}\)

\(Ag^+ \rightarrow Ag\)

Balancing the half equation

\(2Cu \rightarrow 2Cu^{2+}\)

\(2Ag^+ \rightarrow 2Ag\)

balanced overall reaction:

\(2Cu + 2Ag^+ \rightarrow 2Cu^{2+} + 2Ag\)

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