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vladimir1956
4 months ago
14

How many hydrogen atoms are in 0.1488 g of phosphoric acid, H3PO4?

Chemistry
2 answers:
alisha [2.9K]4 months ago
4 0
I am aware that God appeared to me.
Tems11 [2.7K]4 months ago
4 0

Answer:

You asked, and the response is: 2.75 x 10 ²¹ atoms

Explanation:

Information

H₃PO₄

weight = 0.1488 g

Molecular weight of H₃PO₄ = 3 + 31 + (16 x 4) = 98 g

98 g of H₃PO₄ ------------------ 3 g of H₂

0.1488 g H₃PO₄ --------------- x

x = 0.0046 g of H₂

1 g of H₂ ------------------- 6.023 x 10²³ atoms

0.0046 g of H₂ -------------- x

x = (0.0046 x 6.023 x 10²³) / 1

x = 2.75 x 10 ²¹ atoms

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Combustion analysis of an unknown compound containing only carbon and hydrogen produced 0.2845 g of co2 and 0.1451 g of h2o. wha
VMariaS [2998]
CxHy + (x+0.25)O₂ → xCO₂ + 0.5yH₂O

m(CO₂)/{xM(CO₂)}=m(H₂O)/{0.5yM(H₂O)}

0.2845/{44.01x}=0.1451/{9.01y}

x/y=0.4=2:5

The empirical formula is C₂H₅.
7 0
3 months ago
Hitesh wants to learn swimming. He brought swimming costumes and a cap. What kind of material should these be made of and why?
alisha [2963]

Answer:

Nylon and Spandex (Lycra).

Explanation:

These materials are designed to fit the body, with nylon drying more quickly than other types of fabrics, and Spandex being commonly found in swimming and sports apparel due to its elastic qualities. Both fabrics also wick moisture away and dry rapidly.

With high capacity and enhanced flexibility, nylon and Spandex provide a snug fit to the body and can retain their shape during various activities, making them ideal for swimming.

This explains why these materials are suitable based on the situation given.

3 0
4 months ago
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