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Luden [163]
2 years ago
12

Pls help me guys, sos

Chemistry
2 answers:
RideAnS [48]2 years ago
6 0

Answer:

sorry I don't know please I am really sorry

zhenek [66]2 years ago
4 0

Answer:

In similarity, the farthest they get to being alike is, they both meet some forms of energy. They are different because light energy does not make sound, and sound energy cannot make light.

Hope it helps!

-science potato

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The observation that 20g of hydrogen gas always combines with 160g of oxygen gas to form 180g of water, even when there is more
mash [69]

Answer:

The answer is most likely A. Definite proportions

Explanation:

The Law of Definite proportions states that a given chemical compound always contains its component elements in fixed ratio (by mass) and does not depend on its source and method of preparation.

3 0
3 years ago
Is aluminum foil an element, compound or mixture
lora16 [44]
It is an element. Aluminun foil is aluminum prepared in thin leaves.
3 0
3 years ago
Read 2 more answers
What is the mass of 5 moles of Fe2(CO3)3 ?
sineoko [7]

Answer:

1218.585

Explanation:

Looking at the subscripts we know there are 2 atoms of Fe, 3 atoms of C, and 6 of O.

Take the molar mass of each atom (from the periodic table) and multiply by the # of atoms

Fe: 55.845×2= 111.69

C: 12.011×3= 36.033

O:15.999×6=95.994

Add the values together: 243.717 g/mol

That is 1 mole of the molecule. Multiply by 5 for the final answer.

243.717×5=1218.585

7 0
3 years ago
What is the VSEPR model of CB4I?
sesenic [268]

Answer:

Molecular geometry Vsepr

According to VSEPR, the valence electron pairs surrounding an atom mutually repel each other; they adopt an arrangement that minimizes this repulsion, thus determining the molecular geometry. This means that the bonding (and non-bonding) electrons will repel each other as far away as geometrically possible.

Explanation:

3 0
4 years ago
A sample of nitrogen occupies 10.0 liters at 25°C and 98.7 kPa. What would be the volume at 20°C and 102.7 kPa?
krek1111 [17]
To solve the problem, we assume the sample to be ideal. Then, we use the ideal gas equation which is expressed as PV = nRT. From the first condition of the nitrogen gas sample, we calculate the number of moles.

n = PV / RT
n = (98.7x 10^3 Pa x 0.01 m^3) / (8.314 Pa m^3/ mol K) x 298.15 K
n = 0.40 mol N2

At the second condition, the number of moles stays the same however pressure and temperature was changed. So, the new volume is calculated as follows:

V = nRT / P
V = 0.40 x 8.314 x 293.15 / 102.7 x 10^3
V = 9.49 x 10^-3 m^3 or 9.49 L
7 0
3 years ago
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