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vodomira [7]
2 years ago
9

Someone pls help me I will mark you as brain

Chemistry
1 answer:
gavmur [86]2 years ago
4 0

Answer:

1st one is the answer water cannot be purified by nature pls add me in brainliest

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How many helium nuclei fuse together when making carbon?
Gemiola [76]
The answer is the 3. Hope this helped!
8 0
3 years ago
A 25.0 g piece of aluminum (which has a molar heat capacity of 24.03 J/mol°C) is heated to 86.4°C and dropped into a calorimeter
Ira Lisetskai [31]

Answer:

m H2O = 56 g

Explanation:

  • Q = mCΔT

∴ The heat ceded (-) by the Aluminum part is equal to the heat received (+) by the water:

⇒ - (mCΔT)Al = (mCΔT)H2O

∴ m Al = 25.0 g

∴ Mw Al = 26.981 g/mol

⇒ n Al = (25.0g)×(mol/26.981gAl) = 0.927 mol Al

⇒ Q Al = - (0.927 mol)(24.03 J/mol°C)(26.8 - 86.4)°C

⇒ Q Al = 1327.64 J

∴ mH2O = Q Al / ( C×ΔT) = 1327.64 J / (4.18 J/g.°C)(26.8 - 21.1)°C

⇒ mH2O = 55.722 g ≅ 56 g

5 0
3 years ago
if you administering an oral acetaminophen dose of 320.mg from a bottle of 32.0 mg/ ml, how many mililitters of the solution do
Yuri [45]
10 milliliters are needed
7 0
3 years ago
Which state of matter is not easily compressed, but easily changes shape to fill its container
Dafna1 [17]
A liquid is the answer :)
8 0
3 years ago
Read 2 more answers
How many moles of water are produced from 32 grams of methane?
aleksklad [387]

Answer:

4 moles

Explanation:

n_{CH4} = \frac{32}{16} = 2 (moles)

CH4 + 2O2 → CO2 + 2H2O

  1     :    2    :     1    :      2

  2                                         (moles)

⇒ n_{H2O} = 2 × 2 ÷ 1 = 4 (moles)

4 0
3 years ago
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