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faust18 [17]
2 years ago
13

NO2 + H20-------> HNO2+ HNO3​

Chemistry
1 answer:
Luden [163]2 years ago
8 0

Answer:

6NO2+3H2O-------->3HNO2+3HNO3

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4.45 kcal of heat was added to increase the temperature of a sample of water from 23.0 °C to 57.8 °C. Calculate
Alona [7]

Answer:

m = 4450 g

Explanation:

Given data:

Amount of heat added = 4.45 Kcal ( 4.45 kcal ×1000 cal/ 1kcal = 4450 cal)

Initial temperature = 23.0°C

Final temperature = 57.8°C

Specific heat capacity of water = 1 cal/g.°C

Mass of water in gram = ?

Solution:

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = 57.8°C - 23.0°C

ΔT = 34.8°C

4450 cal = m × 1 cal/g.°C × 34.8°C

m = 4450 cal / 1 cal/g

m = 4450 g

4 0
3 years ago
What is dry ice an example of?
SpyIntel [72]

Answer: D. Sublimation

Explanation: I just took the test.

7 0
3 years ago
When a distance between gas particles increases, the volume of the gas increases true or false??​
Studentka2010 [4]

It is true that when a distance between gas particles increases, the volume of the gas will also increase.

Answer: Option A

<u>Explanation:</u>

The volume of any material can be the space occupied by any material. And the space required by any material to occupy a desired shape or size is determined by its bonding and distance between the particles making that material. If the particles which are soft and small can be compressed easily to occupy very small volume compared to compound made up of hard and large particles.

Along with this, the distance between the neighbouring particles also play a major role, as if we consider a laddo, we can compress it to small size by reducing the distance between neighbouring particles while we will not be able to compress the size or volume occupied by a table as we cannot reduce the distance of particle separation. Thus, it is true that if the distance between gas particles increased then the volume of gas particles will also increase.

5 0
3 years ago
What is the name of the following formula: P4O10
Marysya12 [62]
Phosphorus pentoxide
3 0
3 years ago
Will ice melt faster with a lot of salt added or little salt added?
STatiana [176]

Answer:

alot

Explanation:

because salt contains stuff

5 0
3 years ago
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