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Anettt [7]
3 years ago
13

What are some indicators that a chemical reaction is occurring? Check all that apply.

Chemistry
1 answer:
Olin [163]3 years ago
5 0

Answer: Some signs of a chemical change are a change in color and the formation of bubbles. The five conditions of chemical change: color chage, formation of a precipitate, formation of a gas, odor change, temperature change.

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PLEASE ANSWER CORRECTLY PLEASE
lutik1710 [3]
The answer is 7. Valence electrons are the electrons in the very last shell, so we need to look at the outer “circle” and count the electrons, or the little black dots. There are 7 in the last shell.
6 0
3 years ago
Explain why an atom can only emit specific wavelengths of light and not every possible wavelength
ella [17]

Answer:

<em>The electrons in an atom can only occupy certain allowed energy levels to a lower one</em>, the excess energy is emitted as a photon of light, with its wavelength dependent on the change in electron energy. This is why an atom can only emit specific wavelengths of light and not every possible wavelength.

5 0
2 years ago
What process is the method by which a neutral object obtains an electrical charge? A) convection B) discharge C) induction D) ra
Afina-wow [57]
The answer is C.) induction

3 0
3 years ago
Read 2 more answers
How many moles of sulfur are needed to produce 15.0 mol of sulfur dioxide?
Brut [27]
<span>S + O2 =  SO2

1 mole S ------------- 1 mole SO2
( moles S ) --------- 15.0 moles SO2

moles S = 15.0 x 1 / 1

moles S = 15.0 / 1

= 15.0 moles S</span>
4 0
3 years ago
Read 2 more answers
A simplified version of photosynthesis can be represented as carbon dioxide
Rina8888 [55]

B) oxygen is oxidized.

<h3>Further explanation</h3>

Given

photosynthesis reaction

6CO2 + 6H20 ⇒ C6H12O6 + 602

Required

the oxidation compound

Solution

Oxidation-reduction reactions or abbreviated as Redox are chemical reactions in which there is a change in oxidation number

Oxidation is an increase in oxidation number, whereas Reduction is a decrease in oxidation number.

In the photosynthetic reaction, oxidation and reduction reactions occur in:

CO2 to C6H12O6 : reduction

Oxidation number of C from +4 to 0

H2O to O2 : oxidation

Oxidation number of O from -2 to 0

4 0
3 years ago
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