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Nezavi [6.7K]
3 years ago
12

Express 7.25 in scientific notation

Chemistry
2 answers:
sergeinik [125]3 years ago
8 0
Considering that scientific notation has to move the decimal over so there is only one digit in the Tens place, that is the scientific notation.
Ghella [55]3 years ago
5 0
7.25 x 10^0 is your answer.
I hope this helped! 
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Hitman42 [59]

Answer:

Partial pressure of CO2 = 16 atm

Explanation:

Total number of moles of gases = 4+1 = 5 moles

Mole fraction of CO2 = 4/5

Partial pressure of CO2 = mole fraction of CO2 × total pressure

Partial pressure of CO2 = (4/5) × 20

Partial pressure of CO2 = 16 atm

7 0
3 years ago
At room temperature, a melting solid produces a whitish liquid. A laser beam shined through the liquid is unaffected and produce
navik [9.2K]
The answer is a colloid.
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3 years ago
Answer the following question using the reaction: AB ---> A+B
Vadim26 [7]

Answer:

So whats the question?

Explanation:

3 0
3 years ago
A gold nugget has a density of 38.6g/cm3 and a mass of 270.2. what is its volume?​
aivan3 [116]

Density is given by the equation D=m/V, were D is density, m is mass in grams, and V is volume in cubic centimeters.


In this problem, we have density and we have mass so we can plug into the equation and solve for V.

38.6=270.2/V

<em>*Multiply both sides by V*</em>

38.6V=270.2

<em>*Divide both sides by 38.6*</em>

V=7


The volume of the gold nugget is 7cm3.


Hope this helps!!

5 0
3 years ago
Read 2 more answers
PLEASE HELP!!!
yuradex [85]

This might be right. Im not quite sure. This is what my 5th grade science teacher told me. 'Look at the 2 LR's and add them together. Then look at the total amount which is 32. When you add the 2 LR's you get 17. So subtract 17 from 32 and you get 15. So: C:15 is your answer." (LR's stands for liquid reactants)

10+17=17

Total amount is 32

32-17=15

15 is you mass

Hope this Helps

7 0
3 years ago
Read 2 more answers
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