4 Which pair of ions is isoelectronic?

What volume would a 200.0 g sample of hydrogen sulfide gas occupy at stp?

GrogVix [38]

Answer is: Volume of hydrogen sulfide is 131,37 L.
m(H₂S) = 200,0 g.
n(H₂S) = m(H₂S) ÷ M(H₂S).
n(H₂S) = 200 g ÷ 34,1 g/mol.
n(H₂S) = 5,865 mol.
V(H₂S) = n(H₂S) · Vm.
V(H₂S) = 5,865 mol · 22,4 L/mol.
V(H₂S) = 131,37 L = 131,37 dm³.
n - amount of substance.
Vm - molar volume.

5 0

3 years ago

Rank the following solutions from least polar to most polar. Rank on a scale of 1-4: 1 being the least polar and 4 being the mos

Vlada [557]

Answer:

The answer is given below

Explanation:

When electronegativity difference arises between the bonded atoms, then a molecule is polar.

When electros are shared equally between the bonded atoms or when the polar bonds in a bigger molecule cancels out each other, then a a molucule is non polar.

(a) 50% isopropanol/H2O,--- 2 (second least polar)

(b) 25% isopropanol/H2O,----- 3 (third least polar)

(c) pure water----- is 4 (most polar)

(d) 70% isopropanol/H2O. 1 (least polar)

3 0

4 years ago

Nitrogen dioxide gas is obtained by the reaction of nitrogen monoxide gas and oxygen gas . Write a balanced chemical equation fo

Ksivusya [100]

<u>Answer:</u> The equation is written below.

<u>Explanation:</u>

For the formation of nitrogen dioxide, the reactants used are nitrogen monoxide and oxygen gas.

The balanced chemical equation for the above reaction is given as:

$2NO(g)+O_2(g)\rightarrow 2NO_2(g)$

By Stoichiometry of the reaction:

2 moles of nitrogen monoxide gas reacts with 1 mole of oxygen gas to produce 2 moles of nitrogen dioxide gas.

3 0

4 years ago

Despite the destruction from Hurricane Katrina in September 2005, the lowest pressure for a hurricane in the Atlantic Ocean was

ollegr [7]

Complete Question

Despite the destruction from Hurricane Katrina in Sept 2005,the lowest pressure for a hurricane in the Atlantic Ocean was measured several weeks after Katrina. Hurricane Wilma registered at atmospheric pressure of 88.2 kPa on Oct 19, 2005,about 2 kPa lower than Hurricane Katrinia. What was the difference between the two hurricanes in:

millimeters of Hg? ___ mm Hg

atmospheres? ___ atm

millibars? ___ mb

Answer:

The difference in pressure in mm of Hg is $Pg = 15.05 \ mm\ Hg$