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dangina [55]
3 years ago
9

Melting of gold to a new earring is which change.

Chemistry
1 answer:
nata0808 [166]3 years ago
4 0
Answer is Chemical change
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Methane gas and oxygen gas react to form water vapor and carbon dioxide gas. What volume of carbon dioxide would be produced by
Bas_tet [7]

Answer:

V_{CO_2}=9.23m^3

Explanation:

Hello,

In this case, the undergoing chemical reaction is:

CH_4(g)+2O_2(g)\rightarrow CO_2(g)+2H_2O(g)

Now, as the stoichiometrical factors are in terms of mole but no information about neither the temperature nor the pressure is given, by means of the Avogadro's law, one could perform the stoichiometric calculations with the given volume as both the pressure and temperature remain the same, that is:

V_{CO_2}=9.23m^3CH_4*\frac{1m^3CO_2}{1m^3CH_4} \\\\V_{CO_2}=9.23m^3

Such 1:1 volume relationship equals the 1:1 molar relationship given in the chemical reaction in terms of their stoichiometric coefficients, therefore, the yielded volume of carbon dioxide is also 9.23m³

Best regards.

4 0
4 years ago
Plz help it’s due very soon
Setler79 [48]

Answer:

192g

Explanation:

so for this find out there moles of CH4 by moles=mass/mr

48/16=3 then use molar ratio 1:2 so times it by 2 which is 6 moles. then uses mass =moles*mr so 6*32=192g is the answer hope this helps to understand.

5 0
3 years ago
Read 2 more answers
Which of the following can explain the daily change in sea level observed along a coast?
Paul [167]
The answer is: <span>A.The gravitational pull of the moon on the water near the coast </span>
4 0
3 years ago
1. How many GRAMS of potassium nitrate are present in 4.65 moles of this compound?
strojnjashka [21]
Basically for the first question, it’s 470.58 grams of potassium nitrate. Then for the second, it’s 0.34 moles of potassium nitrate. I hope the work makes sense!

3 0
3 years ago
Please someone help me ASAP I'm confused.
Hatshy [7]
An element. Elements are found in the periodic table.
3 0
3 years ago
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