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Ksivusya [100]
3 years ago
11

Why did the model of the atom change?

Chemistry
1 answer:
choli [55]3 years ago
8 0
D. Experiments provided new evidence about the atom, I think, sorry if I’m wrong
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A balloon is floating around outside your window. The temperature outside is 31 ∘C , and the air pressure is 0.700 atm . Your ne
DochEvi [55]

Answer:

the volume of gas inside this balloon = 146.3 L

Explanation:

Given that:

The temperature T = 31 °C = ( 31 + 273.15 )K = 304.15 K

The air pressure P = 0.700 atm

number of moles of gas n = 4.10 moles

Gas constant = 0.0821 L atm/K/mol

The objective is to calculate the volume of the gas inside the ballon.

Using the Ideal gas equation

PV = nRT

V = nRT/P

V = (4.10×0.0821×304.15)/0.700

V = 102.3799/0.700

V = 146.257 L

V = 146.3 L

Thus, the volume of gas inside this balloon = 146.3 L

3 0
3 years ago
How could a scientist use a sedimentary rock to provide evidence that the right k cycle is a valid scientific model
IRINA_888 [86]

Answer:

By closely observing the sedimentary rock and the presence of organic materials and mineral grains in sedimentary rocks

Explanation:

The rock cycle explains how the three types of rock are formed over time from each other.

To use a sedimentary rock to prove that the rock cycle is a valid scientific model is by, closely observing the sedimentary rock. when the sedimentary rock is closed observed the principle of superposition will be seen ( i.e. younger segments deposited on top ), the presence of organic materials and mineral grains that can be found in Igneous or Metamorphic rocks can also be seen and this shows that Sedimentary rocks pass through the rock cycle. hence this proves that the rock cycle is a valid scientific model overtime  

5 0
3 years ago
Mixture is a
yaroslaw [1]

Answer:

compund

Explanation:

i took the quiz

4 0
3 years ago
If you have A 6-g sugar cube (C12H22011) and dissolved in a cup of hot tea. The
Iteru [2.4K]

The percentage of sugar in the solution is 1%

To solve this question, we need to find the percentage of 6 out of 600.

Data given;

  • mass of sugar = 6g
  • mass of solution = 600g
<h3 /><h3>What is Percentage</h3>

This is the rate or proportion of a substance in the total value and multiplied by 100.

The percentage of sugar in the solution is calculated by

\frac{6}{600} * 100 = 1 %

The percentage of sugar in the solution is 1%

Learn more about percentage here;

brainly.com/question/251701

8 0
3 years ago
Based on your observations from the glowing splint test with oxygen gas, briefly explain why liquid oxygen is a very hazardous s
Cerrena [4.2K]

Answer:

liquid oxygen is highly flammable

Explanation:

near any source of heat. liquid oxygen can explode to flames thus being hazardous

3 0
3 years ago
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