Explanation:
(a) Dry ice is solid carbon dioxide and its chemical formula is solid 
.
(b) Sodium chloride is commonly known as salt in daily life. Hence, chemical formula of salt is NaCl.
(c) Laughing gas is also known as dinitrogen monoxide. Hence, its chemical formula is 
.
(d) Marble (chalk limestone) is chemically known as calcium carbonate. Hence, its chemical formula is 
.
(e) Baking soda is chemically known as sodium bicarbonate. Hence, its chemical formula is 
.
(f) Ammonia has a chemical formula as 
.
(g) Water has a chemical formula as 
.
(h) Milk of magnesia is a base and it is chemically known as magnesium hydroxide. Its chemical formula is 
.
(i) Epsom salt is most often found as heptahydrate of sulfate mineral epsomite. Its chemical formula is usually 
. If not present as a heptahydrate then its chemical formula is 
where, value of x can be equal to 0 to 7.
They all contain the same element
Answer:
0.0833 moles of O₂
Explanation:
Most usual Law to solve this sort of problem, is the Ideal Gases Law
Pressure . Volume = number of moles . R . Temperature
where R is the Ideal Gases Constant → 0.082 L.atm/mol.K
First of all we need to convert the pressure from kPa to atm, because the Units of R
320 kPa . 1 atm / 101.3 kPa = 3.16 atm
Now, you replace data:
3.16 atm . 0.45L = mol . 0.082 L.atm/mol.K . 280K
(3.16 atm . 0.45L) / (0.082 L.atm/mol.K . 280K) = mol
0.0833 moles of O₂
Answer:
Pasta contains all of these different carbohydrates in varying proportions.
Explanation:
Answer:
2nd option is the correct answer of this question
