Volume of Al:
D = m / V
2.70 = 96.4 / V
V = 96.4 / 2.70 => 35.70 mL
Mass of iron:
D = m / V
7.87 = m / 35.70
m = 7.87 x 35.70 => 280.959 g
hope this helps!
There are 6.022 × 10²³ atoms in 39.948 g of argon and 4.0026 g of helium.
Explanation:
39.945 g/mole is the molar mass of argon so 39.948 g of argon are equal to 1 mole of argon.
4.0026 g/mole is the molar mass of helium so 4.0026 g of helium are equal to 1 mole of helium.
We know that Avogadro's number tell us the number of particles in 1 mole of substance which is 6.022 × 10²³.
So in 39.948 g of argon and 4.0026 g of helium contains the same number of atoms, 6.022 × 10²³.
Learn more about:
Avogadro's number
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This is the answer its very useful and very helpful
Explanation:
chromosomes is a threadlike structure of nucleic acid and protein found in the nucleus of most living cells carrying genetic information in the form of genes.
Answer:
893K=620 °C
Explanation:
PV=nRT
P=nRT/V
P= (1 mol* 0.0821* 298K)/15L P=1.63 atm
T=PV/nR
T=(1.63 atm*45 L)/(1 mol*0.0821)
T= 893K=620 °C
