1 answer:
The answer would be C because I did the test and I got 1 question wrong and made an 90% .
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Answer:
d. 1.2 × 1024
Explanation:
From the equation of reaction
2H2 + O2= 2H2O
i.e 2mole(4g) of hydrogen requires 1 mole(32g) of oxygen to produce 2mole (2×6.02×10^23 molecules) of H2O= 1.2×20^24 molcules of water.
NB: 1 mole of H2O contains 6.02×10^23 molecules of H2O
<em>Answer:</em>
- The option C is correct.
- CH4N, 90g, C3H12N3.
<em>Explanation:</em>
<em>Option C:</em>
- The molecular formula is C3H12N3.
- If we take ratio 3:12:3 that will be equal to 1:4:1 so its empirical formula will be CH4N.
- The molar mass of molecular formula = (12×3) + (1×12) +( 14×3) = 98 g
<em>Option A :</em>
- In option A , molecular and empirical formula are both correct but molar mass is not valid. It should be 169 acc. to molecular formula.
<em>Option B:</em>
- In option B, molecular formual is not valid.
- It should be as C6H16O2
Hgdhisybdjxfhdjgf fhcgh ftgi
Answer:
Explanation: a temperature of 273.15 K and a pressure of 100 kPa. When tose conditions are met, 1 mole of any ideal gas will have a volume of 22.7 L.
Answer: d
Explanation:it’s physics no so hard
