Answer:
from,
moles,n = <u>number</u><u> </u><u>of</u><u> </u><u>particles</u><u>,</u><u> </u><u>N</u>
Avogadro constant
N = 8.27 * 6.022×10^23
N = 4.98 × 10^ 24particles.
In 8.27 moles of SiH, there are
4.98 × 10^24particles.
Answer:
cataylst
Explanation:In a chemical reaction, a catalyst changes the activation energy
25/2 and 96/X
CROSS MULTIPLY.
2x=2,400.
divide by 2.
x=1,200.
you take the GIVEN MASS of an element, and you put it on top, the coefficient is what it’s over. i believe this is right
Answer:
33 g
Explanation:
Given data:
Number of moles = 5 mol
Mass of compound = 165 g
Molar mass or gram formula mass = ?
Solution:
Formula:
Number of moles = mass/ molar mass
Now we will put the values in formula.
5 mol = 165 g/ gram formula mass
Gram formula mass = 165 g / 5 mol
Gram formula mass = 33 g/mol