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1 year ago

A sample osoxooso sixisoxoso

Chemistry

1 answer:

DedPeter [7]1 year ago

6 0

Answer:

I believe the correct answer is A.

Explanation:

He atoms are smaller than Ne atoms (4AMU vs 20AMU). Although the kinetic energy and concentrations are the same (same temperature and each have 0.5 mole in 10.0L containers), the kinetic energy is a product of mass and velocity. Since the Ne mass is greater, it will have a lower speed, thus taking longer to bounce out the pinhole.

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If the substance is a liquid or solid, production of an odor would indicate a chemical change.

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Which is the correct name for the compound Ca(CLO2)2

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Calcium hypochlorite

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A student needs to prepare 50.0 mL of a 1.30 M aqueous H2O2 solution. Calculate the volume of 5.0 M H2O2 stock solution that sho

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Answer:

13.0mL

Explanation:

So this is a classic M1V1=M2V2 problem, where M is molarity and V is volume and the subsequent numbers represent the two sets of condition (1 being before dilution and 2 being after dilution)

So M1 is going to be 5.0M because it is our initial molarity and V1 is what we are trying to find since we are trying to find how much of initial volume should be diluted.

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3 years ago

Which of these accurately describes the reactants of a reaction?

oksian1 [2.3K]

Option (C) is the correct answer.

In the chemical reaction, reactants are the starting elements or compounds which will chemically react and will form the products. Reactants are only present on the left hand side of the reaction and products are present on the right hand side of the reaction.

Reactants present in the reaction is completely used up in the reaction to form products implies no traces of reactants will be present in the product side.

For example:

$2H_{2}+O_{2}\rightarrow 2H_{2}O$

Here, hydrogen and oxygen are the reactants whereas water is the product (new substance). Hydrogen reacts with oxygen and form water i.e. hydrogen and oxygen is completely used up in the reaction to form new substance i.e. water.

Hence, substances that are used up in a reaction is known as reactants of the reaction.

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