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Lyrx [107]
3 years ago
8

What does Gravity means Please it’s due today need help please

Chemistry
2 answers:
masya89 [10]3 years ago
7 0

Answer: The force of attraction occurring between two masses.

Likurg_2 [28]3 years ago
7 0
Gravity means the force that pulls objects toward each other!
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When calcium (Ca) is mixed with hydrochloric acid (HCl), a single replacement reaction occurs. What will be the product or produ
antiseptic1488 [7]
The answer is C.) Ca + HCl
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Which of the following is a change from a less condensed to a more condensed state of matter?. . Boiling. . Evaporating. . Conde
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Condensation, among the following options given in the question is a change from a less condensed to a more condensed state of matter. The correct option among all the options that are given in the question is the third option or the penultimate option. I hope the answer comes to your help.
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3 years ago
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How much heat must be removed from 456 g of water at 25. 0 c to hcange it into ice at 10 c
ValentinkaMS [17]

The heat required to convert water is given as the product of the mas and the latent heat. 28.34 kJ heat must be removed from the water to change it into ice.

<h3>What is heat energy?</h3>

Heat energy is the product of mass, specific heat capacity, and temperature change. It is given as,

\rm Q = mc \Delta T

Given,

Mass of water = 456 gm

Specific heat capacity = 4.186 J / g K

Temperatutre change = 14.85 K

Substituting values above:

\begin{aligned} \rm Q &= 456 \times 4.186 \times 14.85\\\\&= 28345.91\;\rm J\\\\&= 28.34\;\rm kJ\end{aligned}

Therefore, 28.34 kJ of heat energy should be removed from the water.

Learn more about the heat here:

brainly.com/question/14052023

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6 0
2 years ago
Help me on a and b pls
marusya05 [52]

Answer:

yes, it is increased by atomic mass

Explanation:

5 0
3 years ago
Electrons in atoms exist in particular energy level. A ___ must be emitted or absorbed to move between energy levels.
svetlana [45]

Answer:

Photon of light

Explanation:

According to Bohr's model of the atom, electrons in atoms are found in specific energy levels. These energy levels are called stationary states, an electrons does not radiate energy when it occupies any of these stationary states.

However, an electron may absorb energy and move from one energy level or stationary state to another. The energy difference between the two energy levels must correspond to the energy of the photon of light absorbed in order to make the transition possible.

Since electrons are generally unstable in excited states, the electron quickly jumps back to ground states and emits the excess energy absorbed. The frequency or wavelength of the emitted photon can now be measured and used to characterize the transition. This is the principle behind many spectrometric and spectrophotometric methods.

8 0
3 years ago
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