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WITCHER [35]
3 years ago
12

BRAINLIESTTTT ASAP!! PLEASE HELP ME :)

Chemistry
2 answers:
SIZIF [17.4K]3 years ago
8 0

Temperature is the average kinetic energy of a substance.

Murljashka [212]3 years ago
4 0
Temperature. We use it it kinetic measurements
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In order for an atom to be neutral (i.e. have no charge), it must have the same number of ______ as it has protons. a. neutrons
Marina CMI [18]

Answer : The correct option is, (b) There is a same number of electrons.

Explanation :

For the neutral atom, the number of protons and electrons are equal. But, they are unequal when the atoms present in the form of ions or the atom has some charges.

When an unequal number of electrons and protons then it leads to the formation of ionic species.

Ion : An ion is formed when an atom looses or gains electron.

When an atom looses electrons, it will form a positive ion known as cation.

When an atom gains electrons, it will form a negative ion known as anion.

For example : The neutral atom Mg has equal number of protons and electrons i.e 12 but Mg^{2+} ion has unequal number of protons and electrons that means it has 12 number of protons and 10 number of electrons.

Hence, the correct option is, (B) electrons

5 0
3 years ago
Calculate the food energy (joules/
Anna007 [38]

Calculate the food energy (joules/g) of one of your food samples. one chemistry calorie is equal to 4.186 joules. convert the energy you calculated to kilojoules (1 kj = 1000 j). since nothing is given, an example is avocadoes have 160 cal/100 g serving

(160 cal/ 100 g)(4.186 J/ 1 cal) (1 kJ/1000 J) = 0.0067 kJ/g

5 0
3 years ago
8 Fe + Sg → 8 Fes<br><br> How many grams of FeS is produced from 0.3 mol Sg?
frozen [14]

Answer:

Explanation:

Molar ratio for Sg : FeS = 1:8

If there are 0.3 moles for Sg

Therefore, 0.3 × 8 =2.4 moles of FeS

Mass = Moles/ Mr

Mr of FeS = 56+32=88

So mass = 2.4/88

Mass= 0.027g

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2 years ago
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Answer:

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Explanation:

7 0
3 years ago
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What is the atomic mass number of an isotope that has an atomic number of 5 and includes 6 neutrons?
irinina [24]

The answer should be; 11

The atomic mass number is found by combining the number of protons and neutrons

Hope this helps :)

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3 years ago
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