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olganol [36]
3 years ago
11

A student observed a chemical reaction in which the mass of the products was measured to be less than the mass of the reactants.

How can this be explained?
Chemistry
1 answer:
nika2105 [10]3 years ago
5 0

There chemical reactions that can realise or absorb gas to the atmosphere. This means it is harder or impossible to measure it with normal weighing devices and normal taring equipment. As a principal in chemical reactions we have conservation of mass.

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What is the density of a block marble that occupies 255 cm^3 and has a mass of 1000g
RUDIKE [14]

Answer:

<h2>3.92 g/cm³</h2>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume} \\

From the question we have

density =  \frac{1000}{255}  \\  = 3.921568...

We have the final answer as

<h3>3.92 g/cm³</h3>

Hope this helps you

4 0
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4vir4ik [10]
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Slav-nsk [51]
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8 0
4 years ago
1. In the first step of the mechanism for this process, a phenoxide anion is generated. This phenoxide anion goes on to act as a
Tju [1.3M]

Answer:

See the explanation

Explanation:

In this case, in order to get an <u>elimination reaction</u> we need to have a <u>strong base</u>. In this case, the base is the phenoxide ion produced the phenol (see figure 1).  

Due to the resonance, we will have a more stable anion therefore we will have a less strong base because the negative charge is moving around the molecule (see figure 2).

Finally, the phenoxide will attack the <u>primary carbon</u> attached to the Cl. The C-Cl bond would be broken and the C-O would be produced <u>at the same time</u> to get a substitution (see figure 1).

3 0
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How many levels will argon have?
Varvara68 [4.7K]
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7 0
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