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NISA [10]
3 years ago
10

What is the solubility of Na2HAsO4 at 60 degrees C

Chemistry
1 answer:
nlexa [21]3 years ago
6 0
C. 65g / 100ml of water
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(easy)+(20 points)
Vitek1552 [10]
Liquid to solid and solid to liquid
4 0
3 years ago
Read 2 more answers
A student wants to prepare 250.0 mL of 0.10 M NaCl solution. Which procedure is most appropriate? (formula Molar Mass of NaCl =
Anvisha [2.4K]

The correct answer is option B, that is, add 1.46 grams of NaCl to 250 milliliters of H₂O.

First there is a need to find the moles of NaCl in 250 ml of 0.10 M NaCl,

Moles of NaCl = molarity × volume = 0.10 M × (250/1000L) = 0.025 mol

The corresponding mass of NaCl is,

Mass of NaCl = moles × molar mass = 0.025 mol × 58.5 g/mol = 1.46 g

Thus, there is a need to dissolve 1.46 grams of NaCl solid into 50 ml of H₂O and dilute to 250 ml.

3 0
3 years ago
What is the main intermolecular force in H2CO?
aivan3 [116]
Dipole-dipole interactions, and London dispersion interactions
5 0
3 years ago
Which statement is correct about the rate of chemical reactions?
ratelena [41]

Answer:

It increases when a catalyst is added.

Explanation:

The following factors control reaction rates:

1. Nature of reactants

2. Concentration of the reactants or pressure of gaseous

3. Temperature

4. Presence of catalyst

5. Sunlight

The addition of a foreign body to a reaction may influence the speed of the reaction. If a foreign body increases the rate of reaction, it is a called a positive catalyst or simply a catalyst. A negative catalyst is called an inhibitor.

A catalyst is a substance that is introduced into a chemical reaction to change the rate of the reaction without itself being affected at the end of the reaction.

Catalysts helps to reduce reaction time of many slow reactions. Most catalysts are specific in their actions and works on certain reactions or substrates.

Temperature change has a considerable effect on reaction rates since temperature is directly proportional to the average kinetic energy of reacting particles. Generally, reaction rate varies as temperature directly.

8 0
3 years ago
Why must humans find substitutes for many minerals found on Earth? (A) form at an extremely slow rate (B) controlled by other co
DochEvi [55]

The correct answer is C, too deep in the Earth to collect. Hope this helps!

3 0
3 years ago
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