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Novay_Z [31]
3 years ago
7

When energy is transferred to alr, what happens to the particles of alr?

Chemistry
1 answer:
Tanzania [10]3 years ago
7 0

Answer:

They move faster.

Explanation:

Considering air as our system

When energy is transferred to air, the internal energy of the system increases and this affects the motion of the particles constituting air.

according to the equation.

E = \frac{1}{2}kT

k = boltzman's constant

T= absolute temperature in kelvin

Also, Kinetic energy K = \frac{1}{2} m v^{2}

their velocity increases..

When the internal energy of the air particles increases, their temperature also increases.

This results in greater number of collisions between them and the sides of the container they are put in.

Hence, the pressure also increases, all these points indicate that particles of air move faster.

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3) The spectrum of the unknown mixture is a mixture of two substances among the five. What are these two substances
Neporo4naja [7]

Answer:

a. H + d. Na

Explanation:

This is Mixture of H and Na. Because of H and in the emission and Absorption spectrum of H Total 5 lines [Red, Green, Blue and Purple (2)) are present and in the spectrum of Na Two yellow lines are present. In the mixture all this lines are are also 5 + Present. Total lines are 5+2= 7 (H+ Na)

Therefore, the answer is a. H + d. Na

3 0
3 years ago
Limiting Reactant Worksheet
faltersainse [42]

Answer:

a) 1.61 mol

b) Al is limiting reactant

c) HBr is in excess

Explanation:

Given data:

Moles of Al = 3.22 mol

Moles of HBr = 4.96 mol

Moles of H₂ formed = ?

What is limiting reactant =

What is excess reactant = ?

Solution:

Chemical equation:

2Al  + 2HBr  → 2AlBr + H₂

Now we will compare the moles:

                Al              :               H₂

                  2              :               1

                 3.22         :            1/2×3.22 = 1.61 mol

                HBr            :              H₂

                 2                :               1

                4.96            :          1/2×4.96 = 2.48 mol      

The number of moles of H₂ produced by Al are less it will be limiting reactant while HBr is present in excess.

Moles of H₂ :

Number of moles of H₂ = 1.61 mol

6 0
3 years ago
Which molecules are used to produce energy​
marissa [1.9K]

Answer:

Explanation:

fats, proteins, and carbohydrates

3 0
3 years ago
Why is ginger used in food preservation
Vaselesa [24]
Spices like ginger are significantly used in preservatives because they have antimicrobial properties in their chemical compounds. They also have antioxidant properties that allow food to be preserved.
6 0
3 years ago
How is oxygen and nitrogen alike​
11111nata11111 [884]

Answer:

They are both colorless, odorless, and tasteless. They have the same number of valence electrons too. And unbalanced electrons in their valence shell.

Explanation:

3 0
3 years ago
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