How many moles are in 136.9 g of Ba(OH)2?

Answers

Answer 1

Answer:

Answer:0.7989883138766937

Explanation:

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A 3.0 M HCl(aq) solution contains a total of(1) 3.0 grams of HCl per liter of water (2) 3.0 grams of HCl per mole of solution (3) 3.0 moles of HCl per liter of solution (4) 3.0 moles of HCl per mole of water
25.367 + 15.08 sig fig
The amount of heat transferred from an object depends on all of the following exceptA. the specific heat of the object. B. the change in temperature the object undergoes. C. the initial amount of Calories in the object. D. the mass of the object.
Hello,How can you tell if a molecular ion will have one or ore unpaired eletrons?For example,"Which of the following molecules is expected to have one or more unpaired electrons? Check all that apply.O2-F2+N22-O22-"Any help would be appreciated. ...?
Which molecule is a source of energy, a store of energy, and can mix with water?

What is the correct electron configuration for carbon?a. 1s22s22p2
b. 1s22s22p4
c. 1s22s22p5
d. 1s22s22p63s23p2

Answers

It is A; [He] 2s² 2p² is another way to put it

Your answer would be A.

According to VSEPR theory, electrons tend to _____ other electrons.A. repel
B. attract
C. collect
D. produce

Answers

the answer is A " Repel"

What is migrate? Help me pls

Answers

means moving from one place to the other

Hey there

Migrate means moving from habitat to another. Example - I migrated to Canada in 1994. Another example is - when autumn arrives, birds migrate south.

All of the following methods would increase the solubility of a solid solute, except for

Answers

may i please have a(n) answer choices please because it would be a lot better if it was like that and then ill answer it

Workers digging a tunnel through a city find someancient pots decorated with geometric designs.
Which of the following tasks might they ask a
chemist to do? Explain your answer.
a. Determine the materials used to make the pots.
b. Explain what the designs on the pots represent.
c. Recommend how to store the pots to prevent
further damage.

Answers

Answer:

a. Determine the materials used to make the pots.

Explanation:

Workers digging a tunnel through a city who find some ancient pots decorated with geometric designs will employ the services of a chemist.

The chemist would help to determine the materials which were used to make the pots . This is usually done by various type of experiments and observations. After the constituent of the pot is gotten then more information would be derived from the possible source and use of the pot

Balance the following equation. Then determine the mole ratio of Ca(OH)2:Al(OH)3. Al2(SO4)3 + Ca(OH)2 Al(OH)3 + CaSO4

Answers

To balance the reaction, we look at the number of atoms of each element we have. It should be equal for both sides. The balanced reaction is:

Al2(SO4)3 + 3Ca(OH)2 = 2Al(OH)3 + 3CaSO4

The ratio of calcium hydroxide and aluminum hydroxide is 3:2.

Answer: The mole ratio of $Ca(OH)_2:Al(OH)_3$ is 3 : 2

Explanation:

Law of conservation of mass states that mass can neither be created nor be destroyed, but it can only be transformed from one form to another. In a chemical reaction, total number of individual atoms on reactant side must be equal to the total number of individual atoms on the product side.

All the balanced chemical equation follows law of conservation of mass.

The balanced chemical equation for the combination of aluminium sulfate with calcium hydroxide is:

$Al_2(SO_4)_3+3Ca(OH)_2\rightarrow 2Al(OH)_3+3CaSO_4$

Mole ratio of any two compounds is basically the ratio of their stoichiometric coefficients.

Hence, the mole ratio of $Ca(OH)_2:Al(OH)_3$ is 3 : 2

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Which is something that a PURE SUBSTANCE and a SOLUTION have in common?A) They both are made of one kind of particle.B) They both are made of different kinds of particles.C) They both look speckled or chunky.D) They both look uniform (the same) throughout.

Periodicity is best defined as: the fact that elements increase in atomic mass in a regular way. the repeating nature of physical and chemical properties with increasing atomic number. the regular growth of atomic size with atomic mass. the consistent decrease of nuclear charge with atomic mass. the repeating nature of atomic nuclear structure.

Which substance is an electrolyte? (1) CH3OH (3) H2O (2) C6H12O6 (4) KOH

Write the chemical name for MnS2?