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scoray [572]
3 years ago
13

With carbon dioxide, what phase change takes place when the temperature

Chemistry
1 answer:
r-ruslan [8.4K]3 years ago
4 0
The answer is false
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Which examples best demonstrate the benefit of understanding physical properties?
Veseljchak [2.6K]

Answer:

*Engineers can design better bridges because they know how metal changes shape.

*Scientists can easily classify mixtures of unknown substances.

Explanation:

Tensile strength and the properties of mixtures are physical properties because the substances are not changed into different ones.

A. and C. are wrong. Combustion and other reactions are chemical properties because the substances are changed into different ones

3 0
4 years ago
Read 2 more answers
Nitrogen and oxygen do not react appreciably at room temperature, as illustrated by our atmosphere. But at high temperatures, th
Gre4nikov [31]

Answer : The equilibrium concentration of NO is, 0.0092 M.

Solution :

First we have to calculate the concentration of NO.

\text{Concentration of NO}=\frac{\text{Moles of }NO}{\text{Volume of solution}}=\frac{0.3152mol}{2.0L}=0.1576M

The given equilibrium reaction is,

                           N_2(g)+O_2(g)\rightleftharpoons 2NO(g)

Initially conc.      0        0           0.1576

At eqm.               (x)       (x)        (0.1576-2x)

The expression of K_c will be,

K_c=\frac{[NO]^2}{[N_2][O_2]}

0.0153=\frac{(0.1576-2x)^2}{(x)\times (x)}

By solving the term, we get:

x=0.0742,0.0839

Neglecting the 0.0839 value of x because it can not be more than initial value.

Thus, the value of 'x' will be, 0.0742 M

Now we have to calculate the equilibrium concentration of NO.

Equilibrium concentration of NO = (0.1576-2x) = [0.1576-2(0.0742)] = 0.0092 M

Therefore, the equilibrium concentration of NO is, 0.0092 M.

5 0
4 years ago
How many grams of nitric acid, HNO3, are required to neutralize (completely react with) 4.30 g of Ca(OH)2?
Ierofanga [76]

Answer:

8.25 g HNO3 (please correct me if I'm wrong!)

5 0
3 years ago
How many moles do 9.2 g of Al(NO3)3 represent?
photoshop1234 [79]
Answer:

0.04319325114089596
6 0
3 years ago
Strongest reducing agent<br>​
Blababa [14]

Answer:

Lithium

Explanation:

Lithium is the strongest reducing agent

6 0
3 years ago
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