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docker41 [41]
3 years ago
6

The table below gives the numbers of protons, electrons, and neutrons in four atoms.

Chemistry
1 answer:
Ivan3 years ago
7 0

Answer:

C. Atom 3

Explanation:

I'm sorry if I answered this late, but hope this helps! :D

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What is the concentration, in m/v percent, of a solution prepared from 50 g NaCl and 2.5 L of solution?
Serjik [45]
When we convert the given mass in grams and volume in liters to m/v percent, we recall that m/v percent is expressed as grams/100 milliliters. In this case the expression becomes (50 grams/ 2500 L)*(0.1L/100ml), that is equal to 0.002 grams/ 100 mL. Hence the the concentration is equal to 0.2 m/v percent.
4 0
3 years ago
Battery acid has a density of 1.285 g/mL and contains 38.0% sulfuric acid by mass. The car battery contains 1.45 L of battery ac
larisa86 [58]

Answer: 708.2 grams

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.

Given : 38 g of H_2SO_4 is dissolved in 100 g of solution.

Density of solution = 1.285 g/ml

Volume of solution = \frac{mass}{density}=\frac{100g}{1.285g/ml}=77.8ml

Thus if 77.8 ml of H_2SO_4 contains = 38 g of H_2SO_4

1.45L= 1450 ml of H_2SO_4 contains = \frac{38}{77.8}\times 1450=708.2 g of H_2SO_4

Therefore, the mass of the sulfuric acid in a car battery is 708.2 g

5 0
3 years ago
As a sample's temperature increases, which two factors also increase? A. Particle speed B. Particle kinetic energy C. Particle b
jeyben [28]

Answer:

C.

Explanation:

It’s particle boiling point because the atoms are moving fast around the particle as possible, so there for its C..

8 0
3 years ago
Read 2 more answers
I need some help on this.
Orlov [11]

Answer:

I think the right answer is c/ number of atomic orbitals

5 0
3 years ago
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What was the scientific basis for the unit amu
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Natural abundance of oxygen I think
4 0
3 years ago
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