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3 years ago

Changes that occur during a chemical reaction are represented by a(n) _?_.

Chemistry

1 answer:

bixtya [17]3 years ago

3 0

Answer:

Explanation:

What does it mean by are represented by is it like cells when things can a cell molecule?

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I'm stuck, can someone help me.

Viktor [21]

I would say c.........

7 0

3 years ago

Read 2 more answers

Atoms of Mg combine with atoms of F to form a compound. Atoms of which of the following elements combine with atoms of F in the

Lena [83]

Answer:

Explanation:

Magnesium is the element of second group and third period. The electronic configuration of magnesium is - 2, 8, 2 or $1s^22s^22p^63s^2$

There are 2 valence electrons of magnesium.

Fluorine is the element of seventeenth group and second period. The electronic configuration of fluorine is - 2, 7 or $1s^22s^22p^5$

There is 1 valence electron of fluorine.

They will combine and form $MgF_2$

The same type of compound is formed by the other members of the group 2 since they will have 2 valence electron.

Group 2 includes:- beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra).

Hence, correct options is:- Ba

5 0

4 years ago

What is the wavelength of radiation that has a frequency of 7.2×10^11 s−1 ?

Airida [17]

Explanation:

It is known that relation between wavelength and frequency is as follows.

$\lambda = \frac{c}{\nu}$

where, $\lambda$ = wavelength

c = speed of light = $3 \times 10^{8} m/s$

[/tex]\nu[/tex] = frequency

It is given that frequency is $7.2 \times 10^{11} s^{-1}$ . Hence, putting this value into the above formula and calculate the wavelength as follows.

$\lambda = \frac{c}{\nu}$

$\lambda = \frac{3 \times 10^{8} m/s}{7.2 \times 10^{11} s^{-1}}$

= $0.416 \times 10^{-3} m$

or, = $4.16 \times 10^{-4} m$

Thus, we can conclude that wavelength of given radiation is $4.16 \times 10^{-4} m$ .

6 0

3 years ago

WHEN A SOCCER PLAYER KICKS A BALL, THE BALL ACCELRATES. EXPLAIN WHAT CAUSES THIS ACCELERATION IN TERMS OF FORCES?

Nana76 [90]

Answer:

When we kick the ball, the force we apply to it causes it to accelerate from a speed of 0 to a speed of dozens of kilometers per hour. When the ball is released from the foot, it begins to decelerate (negative acceleration) due to the force of friction that is exerted upon it (as we observed in the previous example).

Explanation:

5 0

3 years ago

In which way are solar panels helping Indonesian society?

solmaris [256]

Answer:

Indonesia Bank one of the largest consumers of electricity or energy in any form depends on fossil fuels for energy.

Explanation:

Utilisation of solar energy for their day to day basis such that the energy need is met would mean less use of fossil fuels and lesser greenhouse gases.

And also damage to the environment and this is a very important step by Indonesia to do their bit towards environment by controlling pollution and being largest consumer turning green would mean a lot.

3 0

3 years ago