The car will travel 387 ft in 5.00 s.
No. of kilometres = 5.00 s × (1 min/60 s) × (1 h/60 min) × (85.0 km/h) = 0.1181 km
No of feet = 0.1181 km × (1 mi/1.609 km) × (5280 ft/1 mi) = 387 ft
First, you need to convert kg to g.
So, 1 kg =1000g.
3.5 x 1000 = 3500g Ca(OH)2
We need to know the molar mass of Ca(OH)2.
Ca= 40.08 g
O=2(15.999)
H=2(1.0079)
Add them all together and you get 74.0938 g.
Put it in the formula from mass to moles.
# of moles = grams Ca(OH)2 x 1 mol Ca(OH)2
--------------------
molar mass Ca(OH)2
3500 g Ca(OH)2 x 1 mol Ca(OH)2
---------------------
74.0938 g Ca(OH)2
So divide 1/74.0938 and multiply by 3500.
You will get about 47.24 moles Ca(OH)2.
Hope this helps! :)
Answer is: The number of neutrons present in the nucleus of each atom is 126.
Polonium (Po) has atomic number 84. Atomic number (Z) is the number of protons, which is characteristic of a chemical element.
Z = p⁺ = 84.
A = p⁺ + n°; mass number is the total number of protons and neutrons in a nucleus.
A = 210.
n° = 210 - 84.
n° = 126; number of neutrons.
False, nonmetals do not make up the largest grouping of elements on the periodic table
Answer: This is true.
Explanation:
It is true because if becomes frozen, then it is physically harder to melt...