All categories

3 years ago

Clary ran 20 miles in four hours. What was her average speed?

Chemistry

2 answers:

Nady [450]3 years ago

4 0

5 miles per hour

20/4=5

alukav5142 [94]3 years ago

3 0

5mph because running 20 miles in four hours can easily be divided into 5.

You might be interested in

A gas is contained in a tick walled balloon. When the pressure changes from 2. 95atm to ___atm, the volume changes from 7. 456L

tia_tia [17]

A gas is contained in a tick-walled balloon. When the pressure changes from 2. 95atm to <u>2.57</u> atm. p.

<h3>What is pressure?</h3>

Pressure is a force perpendicular to the unit area on which it is applied.

Given that, P1, the initial pressure is 2.95 atm

The initial volume, V1 = 7.456 L

The final volume, V2 = 4.782 L

The initial temperature, T1 = 379k

The final temperature, T2 = 212k

The equation will be

$\dfrac{P_1V_1}{T_1 } =\dfrac{P_2V_2}{T_2}$

Putting the values in the equation

$\dfrac{2.95 \times 7.456 L }{379k } =\dfrac{P_2\times 4.782 L}{212k}\\\\\\P_2 = \dfrac{2.95 \times 7.456 L \times 212k }{379k \times 4.782 L} = 2.57\;atm.$

Thus, the pressure changes from 2. 95atm to <u>2.57</u> atm p.

Learn more about pressure

brainly.com/question/12971272

#SPJ1

7 0

2 years ago

1. List five acids and five bases we come across in our day-to-day activities under the correct heading.

shutvik [7]

Answer:

look at the picture

Explanation:

3 0

2 years ago

Explain how mountain chains provide evidence to support the theory of continental drift.

amm1812

Mountain chains are formed by the action of different tectonic plates drifting

5 0

4 years ago

what is the half life of a radioactive sample if 100.0 grams of it decays to 12.5 grams in 24.3 hours

frutty [35]

The Half-Life of the radioactive sample is 8.1 hours.

<h3>What is half life of a radioactive element?</h3>

The half-life of a radioactive substance is the time taken for half the amount of atoms in the given substance to decay.

12.5 grams remains out of 100 grams of the sample.

This is 1/8 of the original samples.

1/8 of the original sample reperesent three half-lives undergone.

Half-Life of the radioactive sample = 24.3/3 = 8.1 hours

Therefore, the Half-Life of the radioactive sample is 8.1 hours.

Learn more about Half-Life at: brainly.com/question/25750315

#SPJ1

7 0

2 years ago

Classify the following alcohol as primary,

Nata [24]

The classification of the alcohols gives;

Compound 1 - Primary alcohol
Compound 2 - Tertiary alcohol
Compound 3 - Secondary alcohol
Compound 4 - Secondary alcohol

<h3>What are alcohols?</h3>

Organic compounds occurs in families. The family of compounds is called a homologous series. The homologous series always have a functional group. The functional group is the atom, group of atoms or bond that is responsible for the chemical reactivity of the members of a given homologous series.

Now we know that the alcohols are those organic compounds that contains the -OH group. The could be aliphatic or alicyclic compounds. We shall now proceed to name the kind of alcohols that each of the compounds shown are;

Compound 1 - Primary alcohol
Compound 2 - Tertiary alcohol
Compound 3 - Secondary alcohol
Compound 4 - Secondary alcohol

Learn ore about alcohols:brainly.com/question/4698220

#SPJ1

3 0

2 years ago