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lianna [129]
2 years ago
11

Which of the following is an indicator of a chemical reaction?

Chemistry
2 answers:
yuradex [85]2 years ago
3 0

Answer:

B

Explanation:

B is the best showing of a chemical reaction out of the choices

garik1379 [7]2 years ago
3 0

Answer:

it is all except C

Explanation:

a chemical reaction occurs when 2 substances completely mix together and they do not remain separate

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which event would be less widely visible from Earth: a partial lunar eclipse or a total lunar eclipse? explain please
adell [148]

Answer:

I had the same question and I put a total lunar eclipse.

Explanation:

A total lunar eclipse would be less widely visible because, in a partial lunar eclipse the moon only has to partly be in the Earth's shadow.

I don't know if this is helpful or not, but this is what I put if you still needed it.

Still stuck? Get 1-on-1 help from an expert tutor now.

6 0
2 years ago
What is the mass of solid NH4Cl formed when 75.5g of NH3 is mixed with an equal mass of HCl? What is the volume of the gas remai
taurus [48]

Answer:The volume of the remaining gas that is ammonia is 23.85 L.

Explanation:

NH_3(g)+HCl(g)\rightarrow NH_4Cl(s)

Moles of NH_3=\frac{\text{mass of} NH_3}{\text{Molar mass of}NH_3}=\frac{75.5 g}{17.03 g/mol}=4.43 mole

Moles of HCl of gas = \frac{\text{mass of} HCl}{\text{Molar mass of}HCl}=\frac{75.5 g}{36.5 g/mol}=2.06 mol

According to reaction 1 mole of HCl reacts with 1 mol of NH_3 then 2.06 moles of HCl will react with = 2.06 moles of NH_3

Moles left of ammonia left = 4.43 - 2.06 = 2.36 moles

Volume of the gas will be given by Ideal gas equation: PV=nRT

Pressure = 752 mmHg = 752 × 0.0031 atm = 2.33 atm

R = 0.08026 L atm/K mol

V = ? , n = number of moles of ammonia

Temperature = 14 °C = 14 + 273 K = 287 K(0°C = 273K)

V=\frac{2.36 mol\times 0.08206 L atm/K mol\times 287 K}{2.33 atm}=23.85 L

The volume of the remaining gas that is ammonia is 23.85 L.

8 0
3 years ago
Read 2 more answers
In which pair would both compounds have the same empirical formula? A. H2O and H2O2 B. BaSO4 and BaSO3 C. FeO and Fe2O3 D. C6H12
Dmitriy789 [7]
"C6H12O6 and HC2H3O2" is the one pair among the following choices given in the question in which both <span>compounds have the same empirical formula. The correct option among all the options that are given in the question is the fourth option or option "D". I hope the answer has come to your great help.</span>
8 0
3 years ago
What is the volume of 55 grams of carbon dioxide at STP
e-lub [12.9K]

Answer:

A. 2.45 L - Answer my answers is right.

7 0
3 years ago
which of the following compounds will likely have a bent triatomic structure? A. H2S. B. O2 C.NI3 D.CH4
Ymorist [56]

a) H2S is your answer.

5 0
3 years ago
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