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stich3 [128]
3 years ago
9

How do you know a physical change has occurred when evaporating water produces gaseous water?

Chemistry
1 answer:
levacccp [35]3 years ago
6 0

Answer:

Its b its the state not anything else

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When NH3(g) reacts with O2(g), the products of the combustion are NO(g) and H2O(g). What volume of O2(g) is required to react wi
arlik [135]

<u>Answer:</u> The volume of oxygen gas required is 3.75 mL

<u>Explanation:</u>

STP conditions:

1 mole of a gas occupies 22.4 L of volume.

We are given:

Volume of ammonia reacted = 3.00 mL = 0.003 L    (Conversion factor:  1 L = 1000 mL)

The chemical equation for the reaction of ammonia with oxygen follows:

4NH_3(g)+5O_2\rightarrow 4NO(g)+6H_2O(g)

By Stoichiometry of the reaction:

(4 × 22.4) L of ammonia reacts with (5 × 22.4) L of oxygen gas

So, 0.003 L of ammonia will react with = \frac{(5\times 22.4)}{(4\times 22.4)}\times 0.003=0.00375L=3.75mL of oxygen gas

Hence, the volume of oxygen gas required is 3.75 mL

4 0
3 years ago
When solid surfaces slide over each other, the kind of friction that occurs is _ friction
abruzzese [7]

When solid surfaces slide over each other, the kind of friction that occurs is called <u>Sliding Friction.</u>

6 0
3 years ago
The elements in Groups 1 and 2 get more reactive as you go down the group.
deff fn [24]

Answer:

Sodium and Magnesium

Explanation:

The elements in Groups 1 and 2 get more reactive as you go down the group.

This means that Sodium is more reactive than lithium and Magnesium is more reactive than beryllium.

On the periodic table, as you go down the group, the reactivity of an element increases. Especially with metals in group 1 and 2. Now Lithium is a metal of group 1, followed by Sodium, while Beryllium is a metal in group 2, followed by magnesium. That's how I picked the answers

4 0
3 years ago
The pressure in car tires is often measured in pounds per square inch (lb/in.2), with the recommended pressure being in the rang
Minchanka [31]

Answer:

2.62 atm

Explanation:

1 atm = 14.6959 psi

38.5 / 14.6959 = 2.62 atm

4 0
2 years ago
Anybody want to share dark jokes?
Pepsi [2]

Answer:

i laughed at a dead body lowkey

Explanation:.

3 0
3 years ago
Read 2 more answers
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