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jasenka [17]
3 years ago
8

How are element identified in terms of their atoms

Chemistry
1 answer:
Sidana [21]3 years ago
5 0
The mass number is the sum of the numbers of neutrons and protons in the nucleus. The elements<span> can be </span>identified<span> unambiguously by the "spectral fingerprints" of </span>their<span>line spectra and in some cases by the flame colors given off by excited </span>atoms<span>.</span>
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What is the name of the compound cs (mno4)2
N76 [4]
D. cadmium permangantie
3 0
3 years ago
Please help due tomorrow <br> Giving Brainlesst
d1i1m1o1n [39]

Answer:

Down arrow:

-a car comes to a stop when a traffic light turns red

Up arrow:

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-car driving 45 mile per hour down straight road

Explanation:

and i think the car going around a bend would be an up arrow

7 0
3 years ago
Which of the following does NOT demonstrate the law of conservation of matter?
Brrunno [24]

The one that does not demonstrates the law of conservation of matter would be the third option: 2NO_2 + H_2O -- > HNO_3 + HNO_2

<h3>What is law of conservation of matter? </h3>

It is a law that explains that matters are conserved during the course of chemical reactions. They can neither be destroyed nor created.

Thus, the number of moles of the species in a reaction remains the same before and after the reaction.

Thus, an equation that demonstrates the law of conservation of matter will be balanced in terms of the number of moles of species.

The only equation, in this case, is 2NO_2 + H_2O -- > HNO_3 + HNO_2

There are 3 oxygen species on the reactant while 5 are present on the product side.

More on the law of conservation of matter can be found here: brainly.com/question/9434062

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8 0
2 years ago
The density of aluminum is 2.7 g.ml. what is the volume of 16.2 grams? HELP
lbvjy [14]

Answer:

The answer is

<h2>6.0 mL</h2>

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

volume =  \frac{mass}{density}

From the question

density = 2.7 g/mL

mass of aluminum = 16.2 g

The volume is

volume =  \frac{16.2}{2.7}

We have the final answer as

<h3>6.0 mL</h3>

Hope this helps you

3 0
3 years ago
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max2010maxim [7]

Answer:

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B) Nonreactive gas - Neon.

C) Great conductor of heat and electricity - Boron.

D) Malleable and highly reactive - Potassium.

Explanation:

hope it helps .

3 0
3 years ago
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