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goldfiish [28.3K]

3 years ago

14

gaseous methane undergoes complete combustion by reacting with oxygen to form carbon dioxide and water vapor . what is the balan

ced equation?

1 answer:

babunello [35]3 years ago

8 0

CH4(g) + 2 O2(g) ----> CO2(g) + 2 H2O(g)

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help please, How much water would you need to add to the 10 grams of sodium hydroxide to make 100 grams of the 10% solution?

jonny [76]

Answer:

90

Explanation:

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3 years ago

Which atom would be expected to have a half-filled <br> 3d subshell?

lana66690 [7]

Answer:

Manganese: Mn

Explanation:

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this electron configuration ends in $3d^{5}$

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3 years ago

What happens if you try to move the atoms very close to each other?

stellarik [79]

They push away from each other or repel due to the same charge they have.

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2 years ago

Which part of atom is responsible for chemical bonding

yulyashka [42]

Answer:

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6 0

3 years ago

How many sulfur atoms are present in 25.6 g of Al2(S2O3)3

IgorC [24]

Given the mass of $Al_{2}(S_{2}O_{3})_{3}$ =25.6 g

The molar mass of $Al_{2}(S_{2}O_{3})_{3}$ =390.35g/mol

Converting mass of $Al_{2}(S_{2}O_{3})_{3}$ to moles:

$25.6 g Al_{2}(S_{2}O_{3})_{3}*\frac{1molAl_{2}(S_{2}O_{3}}{390.35 gAl_{2}(S_{2}O_{3}} =0.0656molAl_{2}(S_{2}O_{3}$

Converting mol $Al_{2}(S_{2}O_{3})_{3}$ to mol S:

$0.0656mol Al_{2}(S_{2}O_{3})_{3}*\frac{6molS}{1mol Al_{2}(S_{2}O_{3})_{3}}=0.3936 molS$

Converting mol S to atoms of S using Avogadro's number:

1 mol = $6.022*10^{23}atoms$

$0.3936mol S *\frac{6.022*10^{23}atoms S}{1 mol S}=2.37*10^{23} S atoms$

5 0

2 years ago