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gregori [183]
3 years ago
6

In a controlled scientific experiment, A. all variables are kept constant. B. one or more variables are kept constant. C. no var

iables are kept constant. D. only one variable can be kept constant. Reset
Chemistry
1 answer:
nlexa [21]3 years ago
8 0
A, all variables are kept constant. In order to get accurate results when doing an experiment, everything should be kept as similar as possible to ensure accurate results.
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A susbtance has an empirical formula of CrO2 and a molecular weight of 168 g/mol. determine the molecualr formula for this subst
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Answer:

Cr_{2} O_{4}

Explanation:

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CrO_{2} x 2 = Cr_{2} O_{4}

3 0
3 years ago
Is it true or false I need help.
dsp73

Answer:

true

Explanation:

4 0
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The mass of a substance is 27.46 g and its volume is 3.42 mL. What is the density of the substance? (hint: density = mass ÷ volu
marin [14]

Answer:

<h2>8.03 g/mL</h2>

Explanation:

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

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We have the final answer

<h3>8.03 g/mL</h3>

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7 0
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Atoms are the smallest unit of an element that holds the physical identity of that element T or F
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Answer:

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8 0
3 years ago
The principle applied to the design of an airplane wing was developed by
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Answer:

<h2>Bernoulli’s Principle</h2>

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They wings are  shaped that way  so that that air flows faster over the top of the wing and slower underneath the wing .

In simple terms ;

Fast moving air equals low air pressure while slow moving air equals high air pressure

Explanation:

6 0
4 years ago
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