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Nitella [24]
2 years ago
7

How many grams of hydrogen gas are needed to react completely with 54.0 g of oxygen gas, given the following balanced chemical r

eaction:
2H2 +O2 --->2H2O
Chemistry
1 answer:
Shkiper50 [21]2 years ago
6 0

Answer:

6.75g of hydrogen will completely react with 54g of oxygen

Explanation:

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A chemistry student adds a quantity of an unknown solid compound X to 5.00 L of distilled water at 15.° C . After 10 minutes of
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Answer:

34 g/100 mL

Explanation:

The solubility of a compound can be expressed in g/100mL, for this we must divide the mass of the compound that dissolves in the solute by the volume of the solvent.

The solvent, in this case, is water, and that mass of the solute X that dissolved is the mass that was recovered after the solvent was drained and evaporated. So the solubility of X (S) is:

S = 0.17 kg/5L

S = 170g/5000mL

S = 170g/(5*1000)mL

S = 34 g/100 mL

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Which of the following has higher ionization energy - Be or Ca. Explain your choice in terms of attractive force between protons
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Answer:

Ca has the greater Ionization Energy because the Trend is I/e decreases as you move down a group. Therefore, Ca has the greater I/e

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Luba_88 [7]

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Explanation: The doublets behind the 7 ppm belongs to the

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A single plus a doublet around 3-4 ppm belongs to CH3 and CH2 Groups as they could be attached to the subsituted alkene group.

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