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vivado [14]
4 years ago
9

How many moles of sodium atoms are contained in 3.5 moles of sodium sulfide

Chemistry
1 answer:
Aliun [14]4 years ago
7 0

Answer:

7 moles

Explanation:

The molecular formula of sodium sulfide is Na_2S

One molecule of Sodium sulfide has 2 atoms of sodium and one atom of sulfur

1 mole of Sodium sulfide has  2 moles of sodium and one mole of sulfur

so 3.5 moles of sodium sulfide will have 2× 3.5 moles of sodium atoms

i.e 2×3.5= 7 moles of sodium atom

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How does an atom differ from a molecule?
blagie [28]

Answer:

A molecule is a bunch of atoms combined.

An atom is the smallest part of an element, that you can get without splitting the nucleus of the atom.

Molecules are made of more two or more atoms joined together. The atoms can be same or different elements. A single molecule is the smallest piece of matter you can have without changing its properties.

Explanation:

5 0
4 years ago
If the half-life of a radioisotope is 250 years how much of a 96.0 gram sample will remain after 750 years
telo118 [61]

Answer:

12 grams

Explanation:

96g=0 years

48g=250 years

24g=500 years

12g=750 years

4 0
3 years ago
f an electron has a mass of 9.709 x 10-31 kg, and a proton has a mass of 1.672 x 10-27 kg, approximately how many electrons are
VikaD [51]

Answer:

The answer is 1722 e⁻

Explanation:

Let's make a rule of three:

9.708×10⁻³¹ kg is the mass of 1 e⁻

1.672 ×10⁻²⁷ kg (which is 1 p⁺), how many e⁻ does it contain.?

1.672 ×10⁻²⁷ kg / 9.708×10⁻³¹ kg

The answer is 1722 e⁻

3 0
4 years ago
A 4 gram metal is heated and it's temperature changes from 25 degrees C to 35
mote1985 [20]

Answer:

O60J

Explanation:

6 0
3 years ago
Read 2 more answers
A gas sample is held at constant pressure. The gas occupies 2.97 L of volume when the temperature is 21.6°C. Determine the tempe
STALIN [3.7K]

Answer:

339.2K

Explanation:

Using Charles law equation;

V1/T1 = V2/T2

Where;

V1 = initial volume (L)

V2 = final volume (L)

T1 = initial temperature (K)

T2 = final temperature (K)

According to the information provided in this question,

V1 = 2.97 L

V2 = 3.42 L

T1 = 21.6°C = 21.6 + 273 = 294.6K

T2 = ?

Using V1/T1 = V2/T2

2.97/294.6 = 3.42/T2

Cross multiply

2.97 × T2 = 294.6 × 3.42

2.97T2 = 1007.532

T2 = 1007.532 ÷ 2.97

T2 = 339.236

The final temperature is 339.2K

5 0
3 years ago
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