A chemist reacts magnesium with hydrochloric acid and collects 57.48 mL of the hydrogen gas that is produced by water displacement. If the lab temperature is 24 C and the atmospheric pressure is 742.1 mm Hg, how many grams of hydrogen are produced? Water vapor pressure is 22.4 mm Hg at 24 C.

0.00446 grams of hydrogen are produced.

Explanation:

Atmospheric pressure at which hydrogen gas was collected = p= 742.1 mmHg

Vapor pressure of the hydrogen gas = p' = 22.4 mmHg

Pressure of the hydrogen gas = P

P = p - p' = 742.1 mmhg - 22.4 mmhg = 719.7 mmHg

719.7 mmHg =

1 atm = 760 mmHg

Volume of the hydrogen gas ,V = 57.48 mL = 0.05748 L

1 mL =0.001 L

Temperature of the hydrogen gas = T = 24°C=24+ 273 K = 297 K

Moles of hydrogen gas = n

( Ideal gas equation)

n = 0.00223 mol

Mass of 0.00223 moles of hydrogen gas:

0.00223 mol × 2 g/mol = 0.00446 g

0.00446 grams of hydrogen are produced.

b i think it’s a water wheel turning in a stream

explanation:

venn diagram is pictorial representation with of circles showing the relation between two finite sets or things. the intersection part of two circles conveys the relation present in between those sets or things.

here in the venn diagram of sand and salt two circles represent sand and salt. but the area falling under the intersection of these circle represents the mixture of sand and salt.

so, in a venn diagram the mixture will be placed in a middle that is in between the intersection of two circles.