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quester [9]
3 years ago
7

13) Which of the following is NOT a true statement concerning what happens in all chemical

Chemistry
1 answer:
sashaice [31]3 years ago
3 0
B. New atoms are formed as products.
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A 1.83 mol sample of carbon reacts with excess zinc oxide to produce zinc and carbon dioxide. How many moles of zinc oxide are c
dusya [7]

Answer:

3.66 moles of Zinc Oxide are consumed

Explanation:

Based on the reaction:

C + 2ZnO → 2Zn + CO₂

<em>Where 1 mole of Carbon reacts with 2 moles of Zin Oxide to produce 2 moles of Zinc and 1 mole of Carbon Dioxide.</em>

<em />

To solve this question, we must convert the moles of carbon added to the moles of Zinc Oxide that react using the chemical equation (1mol C = 2mol ZnO):

1.83 moles C * (2mol ZnO / 1mol C) =

<h3>3.66 moles of Zinc Oxide are consumed</h3>
3 0
3 years ago
The freezing-point depression of a 0.100 m MgSO4 solution is 0.225°C. Determine the experimental van't Hoff factor of MgSO4 at t
Andrews [41]

<u>Answer:</u> The experimental van't Hoff factor is 1.21

<u>Explanation:</u>

The expression for the depression in freezing point is given as:

\Delta T_f=iK_f\times m

where,

i = van't Hoff factor = ?

\Delta T_f = depression in freezing point  = 0.225°C

K_f = Cryoscopic constant  = 1.86°C/m

m = molality of the solution = 0.100 m

Putting values in above equation, we get:

0.225^oC=i\times 1.86^oC/m\times 0.100m\\\\i=\frac{0.225}{1.86\times 0.100}=1.21

Hence, the experimental van't Hoff factor is 1.21

7 0
3 years ago
Approximately how far will a p-wave travel in 4 minutes?
Drupady [299]

Answer:

2000 (km)

Explanation:

:)

3 0
3 years ago
It is dangerous to stick a metal knife into an electric outlet because:
trapecia [35]
C) Metal is a conductor and the electricity will easily flow through it.
6 0
3 years ago
Which measurement, temperature or volume, limits the precision of the data obtained in the experiment? explain?
GrogVix [38]

The answer is volume that is volume limits the precision of data obtained in an experiment  .

As while pouring of the liquids, we control the volume, but it can have been off. And this could results in the wrong mole to mole ratio.Thus it limits the precision, So the answer is that volume limits the precision of data obtained in an experiment .

6 0
4 years ago
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