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Ganezh [65]
2 years ago
12

What mass of H2 is needed to react with 8.5 g of O2 according to the following equation G plus O2 (G)plus H2 ( G)?

Chemistry
1 answer:
Rzqust [24]2 years ago
5 0
The correct answer is number 1
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How much heat will be released if 9.75 g of aluminum reacts with excess ammonium nitrate (NH₄NO₃) according to the following equ
Mandarinka [93]

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7 0
3 years ago
How many moles and molecules are there in 250g of hydrogen nitrate, HNO3
Viefleur [7K]

Answer:

Number of molecules = 23.9  × 10²³ molecules

Number of moles = 3.97 mol

Explanation:

Mass of HNO₃ = 250 g

Number of moles = ?

Number of molecules = ?

Solution:

Number of moles = mass / molar mass

Number of moles = 250 g/63 g/mol

Number of moles = 3.97 mol

Number of molecules:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

For example,

18 g of water = 1 mole = 6.022 × 10²³ molecules of water

1.008 g of hydrogen = 1 mole = 6.022 × 10²³ atoms of hydrogen

For 250 g of HNO₃:

250 g/ 63 g/mol = 3.97 mole

3.97 × 6.022 × 10²³ molecules = 23.9  × 10²³ molecules

6 0
3 years ago
Foods labeled "fat free" can actually contain less than 0.5 grams of fat.
son4ous [18]
<span>Yes,it is true that foods labeled "fat free" can actually contain less than 0.5 grams of fat.Because for advertising purpose only they will tell the product is totally fat free content so that it increases the customer attraction and tendency to buy the product.Each food contain certain grams of fat so it is the true fact to accept.</span>
5 0
2 years ago
Read 2 more answers
How small do you think an individual atom is
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4 0
3 years ago
Read 2 more answers
Which is the correct orbital diagram for carbon?
Brrunno [24]

Answer:

its 2p

Explanation:

In a neutral carbon atom, the 1s sublevel has one orbital with two electrons with opposite spins, represented by the arrows pointing in opposite directions. The 2s sublevel also has one orbital with two electrons, also with opposite spins. The 2p sublevel has three orbitals.

(i don"t understand this i just looked it up ._.

4 0
3 years ago
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