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olga_2 [115]
3 years ago
7

At atmospheric pressure a balloon contains 2.00 l of nitrogen gas how would the volume change \

Chemistry
1 answer:
Amanda [17]3 years ago
3 0
The complete question; At atmospheric pressure a balloon contains 2.00 l of nitrogen gas, how would the volume change if the kelvin temperature was only 75 % of its original value? 
 The change in volume would be;
original volume × percentage 
= 2 ×0.75 = 1.5 L
Thus the volume would change by 1.5 L
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Hi , these are the definitions
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geography ; the study of the earth s  physical features and the people ,plants , and animals.
light ; brightness from the sun or from a light.
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4 0
3 years ago
This is a test please help
GenaCL600 [577]

Answer:

remaining still during the night.

Explanation:

3 0
2 years ago
Standard reduction potentials for nickel(II) and copper(II) The standard reduction potential for a substance indicates how readi
AleksandrR [38]

Answer:

The standard potential, E cell, for this galvanic cell is 0.5670V

Explanation:

Ni²⁺(aq)  +  2e⁻   →   Ni(s)           E red =  - 0.23V      ANODE

Cu²⁺(aq) +  2e-    →  Cu(s)          E red = + 0.337V    CATHODE

ΔE° = E cathode - E anode

ΔE° = 0.337V - (0.23V) = 0.5670 V

6 0
3 years ago
What is the error in the electron configuration, 1s2 2s2 2p6 3s2 3p5 4s2?
Leviafan [203]
1s2 2s2 2p6 3s2 3p6 4s1

s orbital can hold 2 electron
p orbitals can hold 6 electron
3 0
3 years ago
9. How many grams of potassium sulfate are needed to make 250 mL of a 0.150 M
antiseptic1488 [7]

Answer:

6.53g of K₂SO₄

Explanation:

Formula of the compound is K₂SO₄

Given parameters:

Volume of K₂SO₄ = 250mL = 250 x 10⁻³L

= 0.25L

Concentration of K₂SO₄ = 0.15M or 0. 15mol/L

Unknown:

Mass of K₂SO₄ =?

Methods:

We use the mole concept to solve this kind of problem.

>>First, we find the number of moles using the expression below:

Number of moles= concentration x volume

Solving for number of moles:

Number of moles = 0.25 x 01.5

= 0.0375mole

>>Secondly, we use the number of moles to find the mass of K₂SO₄ needed. This can be obtained using the expression below:

Mass(g) = number of moles x molar mass

Solving:

To find the molar mass of K₂SO₄, we must know the atomic mass of each element in the compound. This can be obtained using the periodic table.

For:

K = 39g

S = 32g

O = 16g

Molar mass of K₂SO₄ = (39x2) + 32 + (16x4)

= 78 +32 + 64

= 174g/mol

Using the expression:

Mass(g) = number of moles x molar mass

Mass of K₂SO₄ = 0.0375 x 174 = 6.53g

5 0
3 years ago
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