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Llana [10]
3 years ago
14

Before a child takes a bath, his mother mixes bubbles into bath water. Physical or Chemical Change?

Chemistry
1 answer:
NeX [460]3 years ago
6 0

Answer:

chemical

Explanation:

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Hitman42 [59]

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3 0
3 years ago
"calculate the h+ in a solution that has a ph of 8.73"
alexdok [17]
The  H+   in  a  solution  that  has  a Ph  of  8.73   is   calculate    as  follows

Ph is always =   -  log  (H+)

H+  =    10^-Ph

H+  is  therefore  =  10 ^-  8.73
H+  =  1.86  x10^-9  M
8 0
3 years ago
Which describes an element?
sesenic [268]

Answer:

I think it's D one. Because all others are wrong

3 0
2 years ago
If 5 L of butane is reacted what volume of carbon dioxide is produced ILL GIVE BRAINLIEST
Len [333]

Answer: First, here is the balanced reaction:  2C4H10  +  13O2  ===>  8CO2  +  10H2O.

This says for every mole of butane burned 4 moles of CO2 are produced, in other words a 2:1 ratio.

Next, let's determine how many moles of butane are burned.  This is obtained by

5.50 g / 58.1 g/mole  =  0.0947 moles butane.  As CO2 is produced in a 2:1 ratio, the # moles of CO2 produced is 2 x 0.0947  =  0.1894 moles CO2.

Now we need to figure out the volume.  This depends on the temperature and pressure of the CO2 which is not given, so we will assume standard conditions:  273 K and 1 atmosphere.

We now use the ideal gas law PV = nRT, or V =nRT/P, where n is the # of moles of CO2, T the absolute temperature, R the gas constant (0.082 L-atm/mole degree), and P the pressure in atmospheres ( 1 atm).

V = 0.1894 x 0.082 x 273.0 / 1  =  4.24 Liters.

Explanation:

8 0
3 years ago
Which two options are examples of chemical changes? A. A white powder mixed with a clear, colorless liquid makes a solution that
WARRIOR [948]

Answer:

b and d

Explanation:

4 0
3 years ago
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