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Oksana_A [137]
3 years ago
10

How to write 0.99966788 in scientific notation?

Chemistry
2 answers:
inn [45]3 years ago
7 0

Answer:

9.9966788 x 10^-1

mars1129 [50]3 years ago
4 0
Move the decimal 4 times to the right than thay number tomes 10^-4
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Mazyrski [523]

Answer:

balenced

Explanation:

6 0
3 years ago
A chemical test has determined the concentration of a solution of an unknown substance to be 2.41 M. a 100.0 mL volume of the so
Oksana_A [137]

Answer : The molar mass of unknown substance is, 39.7 g/mol

Explanation : Given,

Mass of unknown substance = 9.56 g

Volume of solution = 100.0 mL

Molarity = 2.41 M

Molarity : It is defined as the number of moles of solute present in one liter of volume of solution.

Formula used :

\text{Molarity}=\frac{\text{Mass of unknown substance}\times 1000}{\text{Molar mass of unknown substance}\times \text{Volume of solution (in mL)}}

Now put all the given values in this formula, we get:

2.41M=\frac{9.56g\times 1000}{\text{Molar mass of unknown substance}\times 100.0mL}

\text{Molar mass of unknown substance}=39.7g/mol

Therefore, the molar mass of unknown substance is, 39.7 g/mol

5 0
3 years ago
With of these energy resources can produce the most amount of energy from the smallest amount of fuel
777dan777 [17]
Please now mark this one Brainliest.. please!!!!! I could answer your questions  too,,,if you rephrase it!!
7 0
3 years ago
1. How many moles of oxygen are made if 12.0 moles of potassium chlorate react?
Alex787 [66]

Answer:

18

Explanation:

12*3=36

36/2=18

567890

3 0
3 years ago
Why do we use moles when calculating empirical chemical formulas, but not the mass?
Arada [10]

Answer:

because moles is the chemical unit*Avogadro's number, meaning it's the amount of atoms in the given unit.

Explanation:

8 0
3 years ago
Read 2 more answers
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