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Artist 52 [7]
3 years ago
5

PLZ HELP!!! WILL GIVE BRAINLIEST!! Balance the following equations to show the law of conservation of mass: (10 points - 1 point

for each correct line)

Chemistry
1 answer:
Dafna11 [192]3 years ago
4 0
A - 1 CH4+ 1 O2 = 1 CO2+2 H2
b - 2 Al+3 Cl2 = 2 AlCl3
c - 1 CH2O+ 1 H2 = 1 CH3OH
*The ones that have the coefficient of 1 you can leave blank but if you have to put a number just put 1
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Which statement best explains why heating a liquid affects its velocity
nekit [7.7K]

Part of the answer you are looking for may be- Molecules overcome attractions easily and at high temperatures, move faster- (paraphrased from Google) Since the question asked was not provided with the statements as proposed in the original question, I cannot give you an exact answer. I did what i could do, hope this helps!

3 0
2 years ago
How many molecules of ammonia are contained in 10.4 moles of ammonia, NH3?
Crank

Answer:

The answer is "\bold{6.26 \times 10^{24} \ molecules \ NH_3}\\\\"

Explanation:

1-mole molecules as per Avogadro number= 6.02 \times 10^{23} \ molecules\\\\

1-mole NH_3 \to 6.02 \times 10^{23} \ molecules\\\\

10.4 \ moles \ of \ \ NH_3 :

\to \frac{ 6.02 \times 10^{23} \ molecules }{ 1 \ mole\ NH_3}  \times 10.4 \ mole \ NH_3\\\\ \to 6.02 \times 10^{23} \ molecules   \times 10.4\\\\\to 62.608 \times 10^{23} \ molecules \\\\\to 6.26 \times 10^{24} \ molecules \ NH_3\\\\

6 0
2 years ago
What is the value of x?<br> sin 49° = cos x
denis-greek [22]
Answer: x=41

Sin, cos and tan are part of the trigonometric function. Sin is calculated from opposite/hypotenuse, while cos is calculated from adjacent/hypotenuse.
There is some formula that can be derived from the equation. One of them is sin (90-x)= cos x
If you use it, the calculation would be:
<span>sin 49° = cos x
</span><span>sin 49= sin (90-x)
49= 90-x
x= 90-49= 41</span>
7 0
3 years ago
This is the chemical formula for talc (the main ingredient in talcum powder):
MAXImum [283]

Answer : 6.41 moles of silicon are in the sample.

Solution : Given,

Moles of magnesium = 9.62 moles

The given chemical formula for talc is, Mg_3Si_2O_{52}OH_2

From the given chemical formula we conclude that

The stoichiometry of magnesium and silicon is 3 : 2

3 moles of magnesium is equivalent to 2 moles of silicon

9.62 moles of magnesium will be equivalent to \frac{2}{3}\times 9.62=6.41 moles of silicon

Therefore, the number of silicon present in sample are 6.41 moles.

7 0
3 years ago
The sum of these 2 particles in the nucleus is equal to the atomic mass of an atom. What 2 particles are they? *
rodikova [14]

The answer is C) Protons and Neutrons

Hope this helps!

7 0
3 years ago
Read 2 more answers
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