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katrin2010 [14]
3 years ago
8

A light year is a measurement of ___________. Which word best completes the sentence?

Chemistry
2 answers:
sattari [20]3 years ago
5 0

Answer:

distance

Explanation:

(=^w^=) it is literally just the distance a beam of light moves in one year

pogonyaev3 years ago
5 0

Answer:

It is distance( they were right)

Explanation:

Took test

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9, What is an Independent
stepan [7]

Answer:

Not influenced or controlled by others in matters of opinion

8 0
3 years ago
23 grams of sodium reacts with 293 cm 3 of water that is initially at 298 k. it produces an enthalpy change of 197 kj. what is t
m_a_m_a [10]

448 K is the final temperature of the water.

<h3>What is specific heat capacity?</h3>

The specific heat capacity is defined as the quantity of heat (J) absorbed per unit mass (kg) of the material when its temperature increases by 1 K (or 1 °C), and its units are J/(kg K) or J/(kg °C).

Given,

the mass of Na is 23 g

The volume of water = 293 cm3

Mass of water = 293 g

Total solution mass = 23 g + 293 g = 316 g

Specific heat capacity of water = 4.18 J/Kg

The equation relating mass, heat, specific heat capacity and temperature change is:

q = mcΔT

197 kJ = 316 g x 4.18 J/Kg x (T_{finals} - T_ {initial})

197 kJ = 316 g x 4.18 J/Kg x ( T_{finals}-298 K)

0.1491429956 x 1000 =  T_{finals}-298 K

149.1429956 + 298 = T_{finals}

447.1429956 = T_{finals}

448 K = T_{finals}

Hence, 448 K is the final temperature of the water.

<h3>What does a high specific heat capacity mean?</h3>

A high specific heat capacity means that it can store a large amount of thermal energy for a small change in mass or temperature.

Learn more about specific heat capacity here:

brainly.com/question/2530523

#SPJ4

5 0
2 years ago
If you could place a piece of solid silver into a container of liquid silver, would it float or sink? Explain your answer.
8_murik_8 [283]
Liquid silver is less dense than solid silver, so the solid silver would sink
7 0
3 years ago
Please help me with this homework I really need help with this homework
Rainbow [258]

Answer:

For the first question its C, Gas

For the second one table

Explanation:

The faster particles move, the more kinetic energy they have. Within a given substance, such as water, particles in the solid state have the least amount of kinetic energy. Particles in the liquid state move faster than particles in the solid state. Therefore, they have more kinetic energy.

3 0
3 years ago
Cart A has a mass of 24 kg and is being pulled with a force of 32 N. Cart B has a mass of
horsena [70]
Cart b because it has greater force and higher mass
4 0
2 years ago
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