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sashaice [31]
3 years ago
7

In an experiment, what is the purpose of the control group?

Chemistry
2 answers:
Burka [1]3 years ago
7 0

A control group is the comparison group that helps to "make sure your experiment works." A control group is separated from the rest of the experiment and nothing happens to it kinda like a controlled variable.  Controlled variables are the variables in a experiment that remains the same for example a temperature, time, type of products, etc..

Hope this helps!

goldenfox [79]3 years ago
3 0

In an experiement, the purpose of a control group is to make sure the experiment that your working on works!

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Which property describes the way substances react with other substances to form new substances?
maxonik [38]

Answer:

Chemical Property describes the way substances react with other substances to form new substances.

Explanation:

Hope it helps you

3 0
3 years ago
Read 2 more answers
Comment on whether each of the following is a homogeneous mixture or a heterogeneous mixture: (a) air in a closed bottle, (b) ai
Colt1911 [192]

Explanation:

A mixture in which there is uniform distribution of solute particles into the solvent is known as a homogeneous mixture.

For example, sugar dissolved in water is a homogeneous mixture.

On the other hand, a mixture in which there is uneven distribution of solute particles into the solvent is known as a heterogeneous mixture.

For example, sand present in water is a heterogeneous mixture.

Comment on given situations will be as follows.

(a)   Air in a closed bottle - It is a homogeneous mixture because there will be even distribution of other gases that are present in air.

(b)   Air over New York City - It is a heterogeneous mixture because there will be presence of some dust particles, fog or smoke into the air. Distribution of all these particles will be uneven. This will make air over New York City heterogeneous in nature.

8 0
3 years ago
How many molecules (not moles of nh3 are produced from 5.01×10?4 g of h2?
Irina-Kira [14]
2,02g     -------    6,02×10²³
5,01×10⁴g  ---    x

x=\frac{5,01*10^{4}g*6,02*10^{23}}{2,02g}=14,93*10^{27}

N₂         +        3H₂       ⇒           2NH₃
1mol      :        3mol        :           2mol
                       18,06×10²³  :       12,04×10²³
                       14,93×10²⁷  :        y

y=\frac{14,93*10^{27}*12,04*10^{23}}{18,06*10^{23}}\approx9,95*10^{27}
5 0
3 years ago
Ionic compounds are typically between a​
barxatty [35]
It starts with a cation and ends with a nonmetal anion. To recap, cations are your positively charged elements and anions are negatively change and usually with the ending “ide”. For example, potassium a metal and chlorine a nonmetal (KCl) would form the word potassium chloride.
8 0
4 years ago
A flask containing 9.65 mL of liquid has a mass of 164.5g. The empty flask has a mass of 155.9 g. Calculate the density of the l
zlopas [31]

155.9

Explanation:

A flask containing 9.65 mL of liquid has a mass of 164.5g. The empty flask has a mass of 155.9

5 0
2 years ago
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