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Leno4ka [110]
3 years ago
11

How many calories of heat are required to raise the temperature of 225g of water from 10.5°C to 43.7°C

Chemistry
1 answer:
Luda [366]3 years ago
8 0
This the answer to the question you asked:)

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How many ions in 6.41 moles of K2O? Please show work.
Oksana_A [137]
1. Convert the number of moles to number of particles (divide 6.41 by 6.022 x 10^23)

2. K2O dissociates into three ions (2 potassium ions and 1 oxide ion), so multiply the result from step 1 by 3 to get your answer
4 0
2 years ago
If a piece of metal has a density of 9.865 g and a volume of 14 ml, what is its mass?
vodka [1.7K]

Answer:

I think the answer is 138.11 gram

Explanation:

8 0
3 years ago
How much more acidic is an acid with a pH of 6 than water with a pH of 7?
vladimir1956 [14]

Answer:

1 pH more acidic

Explanation:

0 is considered to be most acidic.

14 is the most alkaline

7 is neutral.

So from 7 pH, it becomes 1 pH acidic, making it 6 pH.

5 0
3 years ago
Read 2 more answers
The density of dry air measured at 25 Celsius is 1.19 times 10 to the negative 3 what is the volume of 50.0g of air
Oksana_A [137]

Answer:

4.2 x 10⁴ mL

Explanation:

Data Given:

Density (d) of air =  1.19 x 10⁻³g/mL

Mass of the air (m) = 50 g

Volume of the air (V) = ?

Solution:

Formula will be used

                d = m/V

As we have to find volume so rearrange the above equation

               V = m/d . . . . . . . . . . . (1)

Put values in above equation 1

                V = 50 g / 1.19 x 10⁻³g/mL

                V = 4.2 x 10⁴ mL

So,

volume of dry air = 4.2 x 10⁴ mL

4 0
2 years ago
How much would you need to weigh out in order to have 0.2moles of magnesium atoms?
muminat
X/24=0.2moles
x=4.8gram of magnesium is needed to have 0.2 moles of Mg
5 0
2 years ago
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