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postnew [5]
3 years ago
5

Can you guys help me on my science homework??​

Chemistry
1 answer:
natulia [17]3 years ago
3 0

Answer:

1. B 2. D 3. Jon could test which animals like certain foods.

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Describe how surface area affects the rate of a reaction.
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The greater the surface area between reactants, the greater the rate of the reaction.
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4 years ago
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Calculate the molar concentration of HA (90.2 g/mol) in a solution that has a specific gravity of 1.24 and is 64% HNO3 (w/w).​
ser-zykov [4K]

Answer:

Explanation:

Hello,

In this case, considering the given specific gravity we are to compute the density of the 64% HNO3 solution:

\rho=1.24*1g/mL=1.24g/mL

In such a way, since the given solution of nitric acid is 64 % by mass, we've got:

\frac{64gHNO_3}{100g\ solution}

Thus, by using the previously computed density and the molar mass of HA (90.2 g/mol) we can compute the required molar concentration as follows:

M=\frac{(100g-64g)HA}{100g\ solution}*\frac{1.24g\ solution }{1mL \ solution}*\frac{1000mL\ solution}{1L\ solution}*\frac{1molHA}{90.2gHA}   \\\\M=4.95M

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3 years ago
What is the correct name for N2O
krek1111 [17]

Explanation:

Nitrous oxide

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3 years ago
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Can chlorine form two bonds?
pychu [463]

Double bonds are not formed by chlorine. To complete its octet, oxygen requires two bonds (two single bonds or one double bond) and two lone pairs.

Chlorine can only form single bonds unless, for instance, it is bonded to oxygen (ClO3H), in which case, the oxygen forces chlorine to form double bonds.

The chemical element chlorine has the atomic number 17 and the symbol Cl. The second-lightest halogen, fluorine is situated between bromine and fluorine in the periodic table and has most of its features in the middle. At room temperature, chlorine is a gas that is yellow-green.

To know more about Chlorine, visit;

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20. 6th-grade question
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D. visible light and the electromagnetic spectrum

have a small area of overlap.

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you have to look careful in answering questions you could end up right or wrong, on these answers are very important to know, and I am always right with these answer's

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