Answer:
True.
Explanation:
To know which option is correct, let us calculate the number of mole present in 60g of calcium. This is illustrated below:
Mass of Ca = 60g
Molar Mass of Ca = 40g/mol
Number of mole Ca =....?
Number of mole = Mass/Molar Mass
Number of mole of Ca = 60/40
Number of mole Ca = 1.5 moles.
From the calculations made above, we can see that 1.5 moles are present in 60.0 grams of calcium
Answer:
what is the quetion.......
Explanation:
Answer:22.37 mph
Explanation:
100 meters = 0.062137 miles
Assume constant speed over the distance.
0.062137 miles in 10 sec
0.372822 miles in 60 sec = 1 minute
22.36932 miles in 60 minutes
22.37 mph rounded to 2 decimals
Light will travel 9.4525 × 10¹⁷ centimeters in one year.
Explanation:
Knowing that 1 year have 3.154 × 10⁷ seconds, we devise the following reasoning:
if light travels 2.9970 × 10¹⁰ centimeters in 1 second
then light travels X centimeters in 3.154 × 10⁷ seconds
X = (2.9970 × 10¹⁰ × 3.154 × 10⁷) / 1 = 9.4525 × 10¹⁷ centimeters
Learn more about:
speed of light
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