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Verdich [7]
3 years ago
8

What are some words that describe physical change​

Chemistry
1 answer:
nataly862011 [7]3 years ago
3 0
Weight gain
color change (hair, nail polish, or a tan)
if something is rough or smooth
body odor
height
You might be interested in
For the reaction
sp2606 [1]

Answer:

n_{H_2}^{equilibrium}=0.393mol

Explanation:

Hello,

In this case, given the amounts of water and carbon dioxide we should invert the given reaction as hydrogen will be producted rather than consumed:

H_2O(g) + CO(g)\rightleftharpoons H_2(g) + CO_2(g)

Consequently, the equilibrium constant is also inverted:

Kc'=\frac{1}{Kc}=\frac{1}{0.534} =1.87

In such a way, we can now propose the law of mass action:

Kc'=\frac{[H_2][CO_2]}{[H_2O][CO]}

And we can express it in terms of the initial concentrations of the reactants and the change x due to the reaction extent:

Kc'=\frac{(x)(x)}{([H_2O]_0-x)([CO]_0-x)}=1.87

Thus, we compute the initial concentration which are same, since equal amount of moles are given:

[H_2O]_0=[CO]_0=\frac{0.680mol}{70.0L}=0.0097M

Hence, solving for x by using the quardratic equation or solver, we obtain:

x_1=0.00561M\\x_2=0.0361M

For which the correct value is 0.00561M since the other one will produce negative concentrations of water and carbon monoxide at equilibrium. Therefore, the number of moles of hydrogen at equilibrium for the same 70.0-L container turn out:

n_{H_2}^{equilibrium}=0.00561mol/L*70.0L=0.393mol

Best regards.

3 0
3 years ago
Select the pair that has the larger atom or ion listed first.
Sedbober [7]

Answer:

Correc option: Br^- \, , Kr

Explanation:

size of atom : it says somthing about how many shell present in a particular atom or ion and it can also be evaluated on the basis of radius of atom.

Br^- and Kr has highest number of shell as compared to other group of species .

Na ,S , Mg ,P all are from 3rd period but Kr and Br^- in the 4th period so size of species of this group will more,

Size increases on increasring the shell number

3 0
4 years ago
How to Convert 2.00 miles to fathoms?
k0ka [10]

Answer:

1,760

Explanation:

There are 880 fathoms in a mile. To convert miles to fathoms, multiply the mile value by 880.

So, 2.00 × 880 = 1,760

7 0
4 years ago
Please help......A 0.01 g bullet travels with a velocity of 1500 m/s. What is its momentum?
elena-s [515]

Answer:

hope this helps you

Explanation:

Example 1: A 20 kg object has a velocity of 4.5 m/s in the positive x direction. ... What is the momentum of a 3000 kg truck traveling at 25 m/s? 2. A 1500 kg ferryboat has a momentum of 25000 kg∙m/s. ... *A 0.01 kg bullet has a speed of 700 m/s before it strikes a 0.95 kg wooden block ... We will be going outside so please.

4 0
3 years ago
explain why the properties of a reactant can be different from the properties off the products of the reaction
Mrac [35]

Answer:

The reactants and products in a chemical reaction contain the same atoms, but they are rearranged during the reaction. As a result, the atoms end up in different combinations in the products. This makes the products new substances that are chemically different from the reactants.

Explanation:

6 0
3 years ago
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