Add 3 x 10^9 +5.3 x 10^10
2 answers:
Answer:
3*10⁹ + 5.3*10¹⁰ = 5.6*10¹⁰
Explanation:
The values are given as exponents:
3*10⁹ and 5.3*10¹⁰
As per the rules:
-Before adding two numbers, all exponents must be the same
-The addition takes place between the numerical portion of the numbers
- The final value is rounded off to the least places in the decimal portion of the given numbers
Therefore, the two numbers to be added are:
Rounded off the final value to 1 decimal place gives:
5.6*10¹⁰
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Answer:
<h3>The answer is 40.96%</h3>Explanation:
The percentage error of a certain measurement can be found by using the formula
From the question
actual density = 2.49g/mL
error = 2.49 - 1.47 = 1.02
We have
We have the final answer as
<h3>40.96 %</h3>Hope this helps you
Answer:
26.7% is the percent composition by mass of sulfur in a compound named magnesium sulfate.
Explanation:
Molar mass of compound = 120 g/mol
Number of sulfur atom = 1
Atomic mass of sulfur = 32 g/mol
Percentage of element in compound :
Sulfur :
26.7% is the percent composition by mass of sulfur in a compound named magnesium sulfate.