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3 years ago

PLS ANSWER WILL GIVE BRAINLIEST

Chemistry

1 answer:

timama [110]3 years ago

4 0

I have attached the solution in photo below. Hope this helps!

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Volgvan

Unsaturated solution

3 0

4 years ago

Gaseous ammonia chemically reacts with oxygen o2 gas to produce nitrogen monoxide gas and water vapor. Calculate the moles of ni

Sergio [31]

Answer: 0.050 moles of nitrogen monoxide are produced by 0.050 moles of ammonia.

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

The balanced chemical reaction is:

$4NH_3(g)+5O_2(g)\rightarrow 4NO(g)+5H_2O(g)$

According to stoichiometry:

4 moles of ammonia produce = 4 moles of nitrogen monoxide

Thus 0.050 moles of ammonia produce = $\frac{4}{4}\times 0.050=0.050$ moles of nitrogen monoxide

7 0

3 years ago

A 7.06% aqueous solution of sodium bicarbonate has a density of 1.19g/mL at 25°C what is the molarity and molality of the soluti

lilavasa [31]

<em>c</em> = 1.14 mol/L; <em>b</em> = 1.03 mol/kg

<em>Molar concentration </em>

Assume you have 1 L solution.

Mass of solution = 1000 mL solution × (1.19 g solution/1 mL solution)

= 1190 g solution

Mass of NaHCO3 = 1190 g solution × (7.06 g NaHCO3/100 g solution)

= 84.01 g NaHCO3

Moles NaHCO3 = 84.01 g NaHCO3 × (1 mol NaHCO3/74.01 g NaHCO3)

= 1.14 mol NaHCO3

<em>c</em> = 1.14 mol/1 L = 1.14 mol/L

<em>Molal concentration</em>

Mass of water = 1190 g – 84.01 g = 1106 g = 1.106 kg

<em>b</em> = 1.14 mol/1.106 kg = 1.03 mol/kg

5 0

3 years ago

Read 2 more answers

One characteristic of a lagoon is often:

Alik [6]

One characteristic of a lagoon is often: concentrated salt.

4 0

4 years ago

Read 2 more answers

The mineral benitoite is a gemstone for making jewelry. It has a molecular weight of 413.44 grams/mole and a percent composition

Mila [183]

<h3>Answer:</h3>

Option-A (BaTiSi₃O₉)

<h3>Solution:</h3>

Step 1: Calculate Moles of each Element;

Moles of Ba = %Ba ÷ At.Mass of Ba

Moles of Ba = 33.21 ÷ 137.33

Moles of Ba = 0.241 mol

Moles of Ti = %Ti ÷ At.Mass of Ti

Moles of Ti = 11.58 ÷ 47.88

Moles of Ti = 0.241 mol

Moles of Si = %Si ÷ At.Mass of Si

Moles of Si = 20.38 ÷ 28.09

Moles of Si = 0.725 mol

Moles of O = %O ÷ At.Mass of O

Moles of O = 34.83 ÷ 16.0

Moles of O = 2.176 mol

Step 2: Find out mole ratio and simplify it;

Ba Ti Si O

0.241 0.241 0.725 2.176

0.241/0.241 0.241/0.241 0.725/0.241 2.176/0.241

1 1 3 9

Hence, Empirical Formula = BaTiSi₃O₉

Step 3: Calculating Molecular Formula:

Molecular formula is calculated by using following formula,

Molecular Formula = n × Empirical Formula ---- (1)

Also, n is given as,

n = Molecular Weight / Empirical Formula Weight

Molecular Weight = 413.44 g.mol⁻¹

Empirical Formula Weight = 137.33 (Ba) + 47.88(Ti) + 28.09 (Si₃) + 16 (O₉) = 413.48 g.mol⁻¹

So,

n = 413.44 g.mol⁻¹ ÷ 413.48 g.mol⁻¹

n = 1

Putting Empirical Formula and value of "n" in equation 1,

Molecular Formula = 1 × BaTiSi₃O₉

Molecular Formula = BaTiSi₃O₉

6 0

4 years ago