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slava [35]
2 years ago
9

Please help me with this. i also need to know what the word heat means.

Chemistry
1 answer:
aliina [53]2 years ago
3 0
Heat is like the fire it’s hot.
I think it’s B
Sorry if I’m wrong
You might be interested in
How many moles of H2 are produced from 5.8 moles of NH3
vodomira [7]

Answer:

1. 8.7moles of H2

2. 2.25moles of O2

Explanation:

1. 2NH3 —> N2 + 3H2

From the equation,

2moles of NH3 produce 3 moles of H2.

Therefore, 5.8moles of NH3 will produce Xmol of H2 i.e

Xmol of H2 = (5.8x3)/2 = 8.7moles

2. C3H8 + 5O2 —> 3CO2 + 4H2O

From the equation,

5moles of O2 produced 4moles of H2O.

Therefore, Xmol of O2 will produce 1.8mol of H2O i.e

Xmol of O2 = (5x1.8)/4 = 2.25moles

4 0
3 years ago
What is the pH of a solution with a hydrogen ion concentration of 4.5 x<br> 10-6 M ?
Fittoniya [83]

Answer:

<h2>5.35 </h2>

Explanation:

The pH of a solution can be found by using the formula

pH = - log [ {H}^{+} ]

We have

pH =  -  log(4.5 \times  {10}^{ - 6} )  \\  = 5.346787...

We have the final answer as

<h3>5.35 </h3>

Hope this helps you

6 0
2 years ago
Element X reacts with chlorine to form an ionic compound that has the formula XCl₂. To which group on the Periodic Table could e
marishachu [46]

Answer:

<u>Group 2 is the correct answer.</u>

Explanation:

<u>Chlorine has a charge -1. It means that X is +2 so that the formula is XCl2. </u>

4 0
3 years ago
For about how long do scientists think wind and solar power can provide us with energy?
ivanzaharov [21]

Answer:

D

Explanation:

They are renewable energy sources

6 0
3 years ago
from the balanced equation we see that h20 is 1 to 1 mole ratio the number of moles of acid and base. What is the number of mole
forsale [732]

Answer:

0.0498 mol

Explanation:

Number of moles = concentration in mol/L × volume in L

Concentration = 1 M = 1 mol/L

Volume = 49.8 mL = 49.8/1000 = 0.0498 L

Number of moles = 1×0.0498 = 0.0498 mol

5 0
3 years ago
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