Answer:
The number of moles of Sr in one mole of Sr(HCO₃)₂ = 1 mole
The number of moles of H in one mole of Sr(HCO₃)₂ = 2 moles
The number of moles of C in one mole of Sr(HCO₃)₂ = 2 moles
The number of moles of O in one mole of Sr(HCO₃)₂ = 6 moles
Explanation:
The given chemical formula of the compound is Sr(HCO₃)₂
The number of atoms of Sr in the compound = 1
The number of atoms of H in the compound = 2
The number of atoms of C in the compound = 2
The number of atoms of O in the compound = 6
The number of atoms of each element present in each formula unit of Sr(HCO₃)₂ is proportional to the number of moles of each atom in one mole of Sr(HCO₃)₂
Therefore;
The number of moles of Sr in one mole of Sr(HCO₃)₂ = 1 mole
The number of moles of H in one mole of Sr(HCO₃)₂ = 2 moles
The number of moles of C in one mole of Sr(HCO₃)₂ = 2 moles
The number of moles of O in one mole of Sr(HCO₃)₂ = 6 moles.
The hardest to compress here would be the brick
The last one is the suns energy
Answer:
The energy of one photon of this light is 4.568 × 10∧ -19 J
Explanation:
Given data:
wavelength = 433.9 nm or 433.9 × 10∧-9 m
The value of speed of light is 3× 10∧8 m/s and plancks constant is 6.626 × 10∧-34 m²Kg/s
Formula:
E= hc/λ
E= energy of photon
h= plancks constant
c= speed of light
λ= wavelength of given light
Solution:
E= hc / λ
E = 6.626 × 10∧-34 m²Kg/s × 3× 10∧8 m/s / 433.9 × 10∧-9 m
E = 19.878 × 10∧-26 m²Kg/s² / 433.9 × 10∧-9 m
E = 0.04568 × 10∧ -17 J (Kg m²/s² =J)
E = 4.568 × 10∧ -19 J
1 atm = 760mmHg
0.950 atm = (0.950 atm) * (1 atm) = 0.95
Answer: 0.96 mmHg
