Answer:
I don't speck or understand spanish
Explanation:
I can understand Si that means yes but that all
Answer:
An Element is a substance made up of only one type of atom as like gold, copper, oxygen, etc.
Copper sulphate with molecular formula , the elements are copper, sulphur and oxygen. It is formed by combination of cation and anion.
Copper sulphide with molecular formula , the elements are copper and sulphur. It is formed by combination of cation and anion.
Salts is the correct awnser
Answer:
this was the last of .the last 555543 years of 55my in
Explanation:
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The reaction for the combustion of methane can be expressed as follows.
CH4 + 2O2 --> CO2 + 2H2O
We solve first for the amount of carbon dioxide in moles by dividing the given volume by 22.4L which is the volume of 1 mole of gas at STP.
moles of CO2 = (5.6 L) / (22.4 L/1 mole)
moles of CO2 = 0.25 moles
Then, we can see that every mole of carbon dioxide will need 1 mole of methane
moles methane = (0.25 moles CO2) x (1 moles O2/1 mole CO2)
= 0.25 moles CH4
Then, multiply this by the molar mass of methane which is 16 g/mole. Thus, the answer is 4 grams methane.