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Lelu [443]
4 years ago
10

Is bubbles forming in water a chemical change

Chemistry
2 answers:
taurus [48]4 years ago
8 0
The processes of bubbles forming in water is an example of a chemical change, as assuming we are talking about liquid water, water itself is not undergoing a change in state. This is a chemical reaction that is occurring within water and resulting in oxygen gas most likely being produced and as a result bubbles forming.
Stolb23 [73]4 years ago
7 0
It is a physical change

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Explanation:

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A mass of one centigram is a mass of<br><br> A 100g<br><br> B 10 g<br><br> C .01 g<br><br> D 1000 g
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So, option C is your answer!

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In witch step did a chemical change most likely occur
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3 years ago
6. 7. A hyperbaric chamber has a volume of 200. L. (a) How many moles of oxygen are needed to fill the chamber at room temperatu
Otrada [13]

Answer:

a) 24.7 mol

b) 790 g

Explanation:

Step 1: Given data

  • Volume of the chamber (V): 200. L
  • Room temperature (T): 23 °C
  • Pressure of the gas (P): 3.00 atm

Step 2: Convert "T" to Kelvin

We will use the following expression.

K = °C + 273.15

K = 23°C + 273.15 = 296 K

Step 3: Calculate the moles (n) of oxygen

We will use the ideal gas equation.

P × V = n × R × T

n = P × V/R × T

n = 3.00 atm × 200. L/(0.0821 atm.L/mol.K) × 296 K = 24.7 mol

Step 4: Calculate the mass (m) corresponding to 24.7 moles of oxygen

The molar mass (M) of oxygen ga sis 32.00 g/mol. We will calculate the mass of oxygen using the following expression.

m = n × M

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6 0
3 years ago
Does anyone know the answer to this? is it A?
AfilCa [17]

Answer:

1/2     ( the two answers given are not FRACTIONS)

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Mole fraction of CH3OH  =   4 / ( 4+4) = 4/8 = 1/2  

3 0
2 years ago
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