1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
vlada-n [284]
3 years ago
15

A mixture of sodium hydroxide and strontium hydroxide contains a total of 0.19 moles of the two compounds. It requires 100.0 mL

of 2.969 M HCl to neutralize all of the base. How many moles of sodium hydroxide were in the original mixture
Chemistry
1 answer:
9966 [12]3 years ago
7 0

Answer:

0.0831 moles of NaOH were in the original mixture

Explanation:

The strontium hydroxide, Sr(OH)2, requires 2 moles of HCl per mole of hydroxide to be neutralized.

The sodium hydroxide, NaOH, requires 1 mol of HCl per mol of hydroxide.

To solve this question we must write 2 equations:

<em>(1) </em>0.19mol = X + Y

<em>Where X = Moles NaOH; Y = Moles Sr(OH)2</em>

The moles of HCl required are:

0.100L * (2.969mol / L) = 0.2969 moles HCl

0.2969 mol = X + 2Y<em>(2)</em>

Replacing (1) in (2):

0.19mol - Y = X

0.2969 mol = (0.19mol - Y) + 2Y

0.1069mol = Y

Moles X = Moles NaOH:

0.19mol = X + 0.1069mol

X = 0.0831 moles of NaOH were in the original mixture

You might be interested in
What is evaporation? Describe what happens at the molecular level during evaporation.
jasenka [17]
 Evaporation happens<span> when atoms or </span>molecules<span> escape from the liquid and turn into a vapor. Not all of the </span>molecules in a liquid have the same energy. <span>Sometimes a </span>liquid<span> can be sitting in one place (maybe a puddle) and its molecules will become a </span>gas<span>. That's the process called </span>evaporation<span>. It can happen when liquids are cold or when they are warm. It happens more often with warmer liquids. You probably remember that when matter has a higher temperature, the molecules have a higher </span>energy<span>. When the energy in specific molecules reaches a certain level, they can have a </span>phase change<span>. Evaporation is all about the energy in individual molecules, not about the average energy of a system. The average energy can be low and the evaporation still continues. </span>
6 0
3 years ago
How many grams in 11.9 moles of sulfur? Avogadro’s number: 6.02x1023 atoms = 1 mole Molar mass of sulfur: 32.06 g sulfur = 1 mol
sergiy2304 [10]

Answer:

Mass = 0.37 g

Explanation:

Given data:

Number of moles of sulfur = 11.9 mol

Mass of sulfur in 11.9 mol = ?

Molar mass of sulfur = 32.06 g

Solution:

Number of moles = mass/molar mass

by putting values,

11.9 mol = mass/ 32.06 g/mol

Mass = 11.9 mol × 32.06 g/mol

Mass = 0.37 g

4 0
3 years ago
A student puts a glass of water in the freezer. Later, he notices ice forming on the surface of the water. Which property of wat
Karolina [17]
C.ice has a lower freezing point than liquid water

hope this helps
4 0
3 years ago
Read 2 more answers
One mole of aluminum atoms has a mass of 27 grams. How many grams are in 9.0 moles of aluminum?
gizmo_the_mogwai [7]
27*9=243 if one mole is equal to 27 grams times that by 9
6 0
3 years ago
What would be the Name of a Chemical made of 14 g Lithium, 32 g Sulfur, and 64 g Oxygen?
bulgar [2K]

The name of the chemical made of 14 g Lithium or 2 moles Lithium, 32 g Sulfur or 1 mol sulfur and 64 g oxygen or 4 moles of oxygen is Lithium sulfate. From the chemical reation:

<span>2Li + S + 4O > Li2SO4</span>
7 0
3 years ago
Other questions:
  • Find the percentage composition for iron in the following compound Fe2(CO3)3
    7·1 answer
  • Help pleaaasee??????????? can u tell me whether it's physical or chemical change
    10·1 answer
  • Typically, water runs through the baseboard copper tubing and, therefore, fresh hot water is constantly running through the pipi
    7·1 answer
  • Diamond, graphite, and fullerenes share what property? A. They are all made of carbon (C) bonded to a metal. B. Their shape. C.
    9·1 answer
  • What is the Molarity of a solution of HNO3 if it contains 12.6 moles in a<br> 0.75 L solution? *
    11·2 answers
  • Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric acid, HCl(aq)HCl(aq), as descr
    6·1 answer
  • What kind of plant growth hormone to regular plant growth. We dissolve 5.0 mg of the solution into 2.0 kg of water. What is the
    6·1 answer
  • Need help!!!
    14·1 answer
  • Consider the chemical equation in equilibrium. A(g) 2B(g) Double headed arrow. C(g) D(g) heat What will happen to the equilibriu
    13·1 answer
  • The normal boiling point of fingernail polish remover is 56℃. what is the vapor pressure of fingernail polish remover at the sal
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!