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11111nata11111 [884]
2 years ago
12

How many grams of sodium (na ) would be needed to create a 100 millimole concentration in one liter?

Chemistry
1 answer:
Rina8888 [55]2 years ago
7 0

2.3g of sodium would be needed to create a 100 millimole concentration in one liter.

Given,

Mole of Na+ = 100 millimole

As we know that,

1 millimole = 10 -³ mole

Mole of Na+ in 100 millimoles = 100 × 10 -³ mole

= 0.1mole

<h3>What is Mole? </h3>

Mole is defined as the ratio of mass of Na+ to the molar mass of sodium.

<h3>What is Molar Mass? </h3>

The molar mass is defined as the sum of the total mass in grams unit of the atoms present to make a molecule per mole.

Mole of Na+ = mass of Na + / molar mass of Na +

0.1 = mass of Na + / 22.99 gl mol

Mass of Na + = 0.1 × 22.99

= 2.299 g

Mass of Na + = 2.3 g

Thus, we calculated that 2.3g of sodium would be needed to create a 100 millimole concentration in one liter.

learn more about moles:

brainly.com/question/15209553

#SPJ4

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Answer:

B

Explanation:

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3 years ago
helium gas in a 2.00 L cylinder is under 1.12 atm pressure. At 36.5°C that same gas sample has a pressure of 2.56 atm. What was
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Answer:

T₁ = 135.41 K

Explanation:

Given data:

Initial pressure = 1.12 atm

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Formula:  

P₁/T₁ = P₂/T₂  

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Solution:

P₁/T₁ = P₂/T₂  

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T₁ = 1.12 atm × 309.5 K / 2.56 atm

T₁ = 346.64 atm . K / 2.56 atm

T₁ = 135.41 K

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Explanation:

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with 6 H2, 4O2 is excess.

H2O molecules formed = 6

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