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Eduardwww [97]
4 years ago
7

Calculate the mass, in grams, of a single tungsten atom (mw

Chemistry
1 answer:
maks197457 [2]4 years ago
5 0

the atomic mass of tungsten is 183.84 grams this is the mass of one mole of tungsten  we know that one mole of any substance contains Avagadro number of atoms or molecules or ions. So one mole of tungsten metal will have 6.023 X 10^23 atoms thus mass of  6.023 X 10^23 atoms is 183.84 grams  hence mass of single atom  = 183.84/ 6.023 X 10^23 atoms = 30.52 X10^-23 =  3.052 X 10^-22 g

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Consider this reaction:
dedylja [7]

Answer:

0.13 M ( 2 s.f)

Explanation:

2Cl2O5 (g)-->2Cl2(g) +5O2 (g)

rate= (17.4 M -1 .s -1 ) [Cl2O5]2

From the rte above, we can tell that our rate constant (k)  = 17.4 M -1 .s -1

The units of k tells us this is a second order reaction.

Initial Concentration  [A]o = 1.46M

Final Concentration  [A] = ?

Time = 0.400s

The integrated rate law for second order reactions is given as;

1 / [A] = (1 / [A]o) + kt

1 /  [A] = [ (1/ 1.46) + (17.4 * 0.4) ]

1 /  [A] = 0.6849 + 6.96

1 /  [A] = 7.6496

[A] = 1 / 7.6496

[A] = 0.13073 M ≈ 0.13 M ( 2 s.f)

8 0
3 years ago
The stomach and intestines allow a person to grow and survive by helping the body
ella [17]

helps you absorb nutrients


5 0
4 years ago
How many grams of water are produced from the combustion of 45.2 g of
Zina [86]

Answer:

101.56 of H₂O

Explanation:

The balanced equation for the reaction is given below:

CH₄ + 2O₂ —> CO₂ + 2H₂O

Next, we shall determine the mass of CH₄ that reacted and the mass of H₂O produced from the balanced equation. This is illustrated below:

Molar mass of CH₄ = 12 + (4×1.01)

= 12 + 4.04

= 16.04 g/mol

Mass of CH₄ from the balanced equation = 1 × 16.04 = 16.04 g

Molar mass of H₂O = (2×1.01) + 16

= 2.02 + 16

= 18.02 g/mol

Mass of H₂O from the balanced equation = 2 × 18.02 = 36.04g

SUMMARY:

From the balanced equation above,

16.04 g of CH₄ reacted to produce 36.04 g of H₂O.

Finally, we shall determine the mass of water, H₂O produced by the reaction of 45.2 g of methane, CH₄. This can be obtained as illustrated below:

From the balanced equation above,

16.04 g of CH₄ reacted to produce 36.04 g of H₂O.

Therefore 45.2 g of CH₄ will react to produce = (45.2 × 36.04)/16.04 = 101.56 g of H₂O.

Thus, 101.56 of H₂O were obtained.

7 0
3 years ago
Which methods could be used to dilute a solution of sodium chloride (NaCl)? Select all that apply.
Pavel [41]

Answer:

NaOH₂2CO3

Explanation:yes i know it is not a Balinese equation

4 0
3 years ago
Water can be heated above its boiling point without boiling. what is this process called?
Hoochie [10]
<span>The process of heating water above its boiling point without it boiling and it remaining liquid is called superheating. It is heated under pressure and can be heated to temperatures of 374 degrees Celsius.</span>
5 0
4 years ago
Read 2 more answers
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