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givi [52]
3 years ago
12

How much heat must be used to raise the

Chemistry
1 answer:
Artist 52 [7]3 years ago
8 0

Answer:

Q =  57934.8 J

Explanation:

Given data:

Mass of water = 180.0 g

Initial temperature = 19°C

Fina temperature = 96°C

Specific heat capacity of water = 4.18 J/g.°C

Heat absorbed = ?

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 = 96°C - 19°C

ΔT = 77°C

Q = 180.0 g×4.18 J/g.°C×77°C

Q =  57934.8 J

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irina [24]

Answer:

it's kcl

Explanation:

the kcl should be salt

5 0
2 years ago
Drag the tiles to the correct locations. Each tile can be used more than once, but not all tiles will be used. One or more locat
Svetlanka [38]

Answer:             xx           xx

                         xxOxxCxxSxx

Explanation:

Sorry for the structure, but since Oxygen and Sulfur belong to group of six they want to share two electrons. Carbon belonging to group four wants to share 4 since its valence shell has four electrons.

Therefore the resulting Lewis structure is linear (like carbon dioxide) with two pairs of lone pairs in each O and S atoms and 0 lone pairs in carbon and two double bond.

8 0
3 years ago
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koban [17]

B

<u>Collisions between gas particles and the object</u> is the reason a gas exerts pressure  on the object.

Explanation:

Gas molecules usually have higher kinetic energy than that of liquid and solids. These molecules, therefore, collide with other molecules of the gas and if the gas is held in a container, the gas molecules will also collide with the walls of the container. As the kinetic energy of the gas molecules increases, due to increased energy input in the gas, so does the energy of collisions between the molecules and the molecules with the walls of the container. This is how the pressure of a gas in a container  increases with an increase in temperature.

Even though the gas molecules are tiny, the numerous collisions by the billions of gas molecules of the gas  apply a cumulative pressure.

Learn More:

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brainly.com/question/13419262

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5 0
4 years ago
How do erosion and deposition work together to form sand dunes?
Leona [35]

Answer:

Erosion occurs through deflation, and sand that was picked up is deposited against an obstruction.

Explanation:

Erosion can be defined as a geological process which involves the wearing away of earth material and transportation of these material  to another location by Natural agents such as wind and water. Erosion involves removal of top soil, rocks and other earth particles by action of wind, glacier and water.

Wind causes erosion by deflation. Deflation is the actual removal of grain of rocks . Generally, it s the lowering of land surface that happens as a result of removal of surface particles(sands grains) by wind. Deflation is usually prevalent in arid areas. This sand can later be picked up and deposited to form sand dunes . Sand dunes are mounds of sand formed by wind . This sands are sheltered by an obstacle. And sand dunes are prevalent in desert and or along the beach. The sand dune grows as sand accumulate.

8 0
3 years ago
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Hydrogen is an element with two naturally occurring isotopes: 2 H and 3 H. This means that 2 H, which has a mass number of 2, ha
Dmitry_Shevchenko [17]

Answer:

TRUE.

Explanation:

Mass Number is the sum of protons and neutrons present in the nucleus of an atom. Isotopy is a phenonmenon that occurs when atoms of same elements have different mass number (Number of neutrons).

2H isotope has 1 proton and 1 neutron.

3H isotope has 1 proton and 2 neutrons.

This meeans 2H isotope has fewer neutrons when compared to the 3H isotope. The correct option is TRUE.

8 0
3 years ago
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