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Sunny_sXe [5.5K]
3 years ago
13

How many liters are in 5.98 moles of nitrogen gas at STP?

Chemistry
1 answer:
Shtirlitz [24]3 years ago
8 0

Answer:

The correct answer is c) 134L

Explanation:

We use the formula PV =nRT. The normal conditions of temperature and pressure are 273K and 1 atm, we use the gas constant = 0, 082 l atm / K mol.

1 atm x   V = 5, 98 mol x 0, 082 l atm / K mol x 273 K

V = 5, 98 mol x 0, 082 l atm / K mol x 273 K / 1 atm

V = 133, 86828 l

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Which process is endothermic?a)b)c)d)The evaporation of water from the skin.The burning of candle wax.The oxidation of iron in a
BlackZzzverrR [31]

Answer:

The answer is option a. The evaporation of water from the skin

Explanation:

An endothermic reaction is any synthetic reaction that retains heat from its environment. The ingested energy gives the enactment energy to the reaction to happen.

No new bonds formed, no bonds broken in this example. water molecules go from liquid to vapour (gas ), intermolecular bond exist between polar (-OH) molecules and energy is required to break these bonds during the change from liquid to gas. So, it is endothermic .

Remaining three above examples are exothermic. combustion of gas releases energy(exothermic). burninig of the candle exothermic because the energy released from the oxygen into carbon dioxide and water.oxidation of iron also exothermic

6 0
3 years ago
Which of the following ions is formed when an acid is dissolved in a solution? (5 points)
olasank [31]

Answer:

H +

Explanation:

Acid are those species which donates the H+ ion when dissolved in a solution. In other way acid are those chemical species which donate proton to other species as proton means H+ ion so H+ ions are formed as a result of dissolution ..

3 0
2 years ago
Read 2 more answers
One meter is equal to 10 9 nanometers. How long in meters is 670 nanometers? 6.70 × 10 –7 m
Mila [183]

Answer:

The answer to your question is: the first option

Explanation:

Meter is a unit of length in the SI, international system of units. Its symbol is m.

Nanometer is equivalent to 10⁻⁹ meters, as its name says it is used to measure  extremely small particles.

-To solve this problem we use a rule of three.

                             1 meter      ⇒     10⁹ nanometers

                             x meters    ⇒     670 nanometers

Simplify

                            x = (670 x 1)/( 10⁹)              

                            x = 6.7 x 10 ⁻⁷ meters

6 0
3 years ago
Draw the structure of ozone according to VSEPR theory. What would be its associated molecular geometry?
vodka [1.7K]

Answer: Ozone's molecular geometry can be described as bent.

Explanation:

The molecular geometry of the O3 groups has a trigonal planar arrangement.

Here is a quick explanation of the molecular geometry of O3 including a quick description of the O3 bond angles.

Examining the  Lewis structure of  O3 we can see that there are a pair of unbounded valence electrons at the top of the structure.

Based on VSEPR Theory (Valence Shell Electron Pair Repulsion Theory) these electrons will repel the electron clouds of the two oxygen atoms on the end.

As a result they will be pushed down giving the 03 molecule a bent molecular geometry or shape.

The 03 bond angle will be 116° degrees since it has a Bent molecular geometry

8 0
3 years ago
When the following equation is balanced, what is the coefficient for HCl? Mg(s) + HCl(aq) → MgCl2 (aq) + H2(g)
Salsk061 [2.6K]

Answer:

We have:

M

g

(

s

)

+

H

C

l

(

a

q

)

→

M

g

C

l

2

(

a

q

)

+

H

2

(

g

)

LHS

Mg= 1

H= 1

Cl= 1

RHS

Mg= 1

Cl=2

H=2

To make Cl and H have 2 on both sides, we place a 2 in front of the HCl

M

g

(

s

)

+

2

H

C

l

(

a

q

)

→

M

g

C

l

2

(

a

q

)

+

H

2

(

g

)

LHS

Mg=1, H=2, Cl=2

RHS

Mg=1, H=1, Cl=2

Thus the equation is balanced and the coefficient of Mg is 1, which is understood so it is not written in the final equation.

Explanation:

4 0
3 years ago
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