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Arisa [49]
3 years ago
15

what is the chemical equation in words for 2 C2H2 (g) + 5 O2 (g) ---------> 4 CO2 (g) + 2 H2O (l )

Chemistry
1 answer:
elena-s [515]3 years ago
4 0

Answer:

Ethyn(g) + 5oxygen(g) ------------> 4carbondioxide(g) + 2water(l)

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Which of the following is correct?
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Answer:c..................

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In process in which An animal's cells use oxygen and digested food molecules to release the energy in food is called
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In process in which An animal's cells use oxygen and digested food molecules to release the energy in food is called

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A graduated cylinder was filled with 25.0 mL of water. A solid object was immersed in the cylinder, raising the water level to 3
yawa3891 [41]

Answer:

Density of the object is 8759.494 grams/L

Explanation:

As we know density of an object is mass of the object divided by its volume

Given

Volume of the object is equal to the change in volume of water with in the cylinder when the object was immersed in water.

Hence, volume of object is equal to

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Density of the object is 8759.494 grams/L

7 0
3 years ago
Why are the average atomic masses of some of the elements in parentheses?
Pie
Because its only representing the most stable isotope of that element but its considered the atomic mass and not average atomic mass
4 0
3 years ago
Neutral atoms of argon, atomic number 18, have the same number of electrons as each of the following items except: Cl- S -2 K+ C
irinina [24]

Answer:

Ne.

Explanation:

Neutral argon, atomic number 18, has 18 electrons.

Cl⁻:

Neutral atom of Cl, atomic number 17, has 17 electrons.

When it gains electron and be Cl⁻, then it has 18 electrons a neutral Ar.

S²⁻:

Neutral atom of S, atomic number 16, has 16 electrons.

When it gains 2 electrons and be S²⁻, then it has 18 electrons a neutral Ar.

K⁺:

Neutral atom of K, atomic number 19, has 19 electrons.

When it losses electron and be K⁺, then it has 18 electrons a neutral Ar.

<em>Ca²⁺:</em>

Neutral atom of Ca, atomic number 20, has 20 electrons.

When it losses 2 electrons and be Ca²⁺, then it has 18 electrons a neutral Ar.

Ne:

It is a noble gas that has 10 electrons.

<em>So, the right choice is: Ne.</em>

<em></em>

3 0
2 years ago
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