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Finger [1]
3 years ago
12

I need evidence and a justification that a chemical change/reaction has occured when water meets liquid nitrogen.

Chemistry
1 answer:
Ksju [112]3 years ago
3 0
Hhhhhhhhhhhhhhhhhhhhhhhhhh
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100.0 g H2SO4 =<br> ? mole H2SO4
diamong [38]

Answer:

sulfuric acid ..............

6 0
3 years ago
Account for the change when NO2Cl is added using the reaction quotient Qc. Match the words in the left column to the appropriate
ryzh [129]

Answer:

A. Disturbing the equilibrium by adding NO2Cl decreases Qc to a value less than Kc.

B. To reach a new state of equilibrium, Qc therefore increases which means that the denominator of the expression for Qc decreases.

C. To accomplish this, the concentration of reagents decreases, and the concentration of products increases.

Explanation:

Hello,

In this case, for the equilibrium reaction:

NO_2Cl(g)+NO(g)\rightleftharpoons NOCl(g)+NO_2(g)

Whose equilibrium expression is:

Kc=\frac{[NO_2][NOCl]}{[NO_2Cl][NO]}

The proper matching is:

A. Disturbing the equilibrium by adding NO2Cl decreases Qc to a value less than Kc, since the denominator becomes greater, therefore, Qc decreases.

B. To reach a new state of equilibrium, Qc therefore increases which means that the denominator of the expression for Qc decreases, since the lower the denominator, the higher Qc as it has the concentration of reactants.

C. To accomplish this, the concentration of reagents decreases, and the concentration of products increases, since the reactants must be consumed in order to reestablish equilibrium by shifting the reaction towards the products.

Best regards.

8 0
4 years ago
A hydrate of CoCl2 with a mass of 6.00 g is heated strongly. after cooling the mass the anhydrate is 3.27g
Brums [2.3K]
We are given with a hydrate with a mass of 6 grams and after heating the mass and cooling afterward, the mass went down to 3.27 grams. The amount of water in the hydrate thus is 6-3.27 g or 2.73 grams.That is equivalent to 45.5 percent by mass water.
6 0
4 years ago
Read 2 more answers
A student performs an experiment to determine the density of a sugar solution. She obtains the following results: 1.79 g/mL, 1.8
Pachacha [2.7K]

Answer:

(B) Her results are both precise and accurate.

Explanation:

In Chemistry, Accuracy refers to how close a measurement is to it's standard value or known value. On the other hand, Precision means how close two measurement are to each other regardless whether the results are accurate or not.

In the above question, all the above results are very close to each other. That's why the results are Precise to each other. All the results  are close enough to the actual value of the experiment. That's why the result are also accurate.

5 0
4 years ago
HELP ASAP!!!!! milk of magnesia has the chemical formula Mg(OH)2. what is the mass of 3.2 moles of milk of magnesia? the molar m
Marysya12 [62]
Mg(OH)2

Mg: 1
O: 2
H: 2

Mg. O H
24.3g 32g. 2

58.3g in 1 mol of Mg(OH)2

3.2mol of Mg(OH)2 x 58.3g of Mg(OH)2
-------------------------
1 mol of Mg(OH)2

= 186.56 g of Mg(OH)2 in 3.2 mols of Mg(OH)2
4 0
4 years ago
Read 2 more answers
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