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nalin [4]
3 years ago
6

Is anyone else's brainly not working or is mine the only one that is tweaking?

Chemistry
1 answer:
omeli [17]3 years ago
5 0
Mine tweaking as well
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What do scientists believe formed the moon's craters and regolith
seraphim [82]

Answer:

What is most widely accepted today is the giant-impact theory. It proposes that the Moon formed during a collision between the Earth and another small planet, about the size of Mars. The debris from this impact collected in an orbit around Earth to form the Moon.

Explanation:

4 0
2 years ago
Read 2 more answers
Which set of chemical name and chemical formula for the same compound is correct?
Elenna [48]

Answer:

B) Iron(lll) phosphate, FePO4

5 0
2 years ago
PLSSSSS HELPPPP......
rosijanka [135]
Answer: A

Explanation:
The buoyancy force only takes affect when an object is placed in water and floats. This occurs because the density of that object is less than the density of water.
Water is the main liquid used for measuring the density of an object.

Hope this helps! Please tell me if I am wrong :3
7 0
2 years ago
Is the number of total molecules on the left side of a balanced equation always equal to the number of total molecules on the ri
Nadya [2.5K]

Answer:

No

Explanation:

No, but the total mass of reactants must equal the total mass of products to be a balanced equation.

Example: Consider the following reaction ...

3H₂ + N₂ => 2NH₃ and 'amu' is atomic mass units (formula weights from periodic table)

In terms of molecules, there are 4 molecules on the left (3 molecular hydrogens (H₂) and 1 molecular nitrogen (N₂) and 2 molecules of ammonia on the right side of equation arrow. ∑reactant molecules ≠ ∑product molecules.

In terms of mass of reactants & mass of products, the 3H₂ + N₂ => 6amu + 28amu = 34amu & mass of products (2NH₃) => 2(14amu) + 6(1amu) = 34amu for sum of product masses.

∑mass reactants = ∑mass products <=> 34amu = 34amu.

The expression '∑mass reactants = ∑mass products' as applied to chemical equations is generally known as 'The Law of Mass Balance'.

3 0
2 years ago
Benzaldehyde, C6H5CHO, has a normal boiling point of 179.0 ∘C and a critical point at 422 ∘C and 45.9 atm.
Naya [18.7K]
Ln(P2/P1) = (L/R).(1/T1 - 1/T2) 

<span>with P1 = 1 atm, P2 = 45.9 atm, R = 8.314 J/mol.K, T1 = 452.15 K, T2 = 695.15 K. This gave the latent heat L as 41.2 kJ/mol.K. </span>

<span>Using this value, and calculating the vapour pressure at 120°C = 393.15 K </span>

<span>ln(P2) = (41.2 x 10^3/8.314).(1/452.15 - 1/393.15) </span>

<span>which gives the vapour pressure P2 as 0.1931 atm = 146.7 torr. </span>
5 0
3 years ago
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