atoms definitions and I hope this helps
Because Na has one too many electron to be stable, while Mg has 2. once they loose those electrons, they will be come ion. loosing one electron will give the ion a 1+ charge, and loosing 2 will create a 2+ charge
2 Ca₅(PO₄)₃F + 7 H₂SO₄ → 3 Ca(H₂PO₄)₂ + 7 CaSO₄ + 2 HF
Explanation:
To balance the chemical reaction the number and type of atoms entering the reaction have to be equal to the type and atoms leaving the reaction.
In our case we have:
10 Ca entering the reaction and 10 Ca leaving the reaction
6 PO₄ groups entering the reaction and 6 PO₄ groups leaving the reaction
2 F entering the reaction and 2 F leaving the reaction
7 SO₄ groups entering the reaction and 7 SO₄ groups leaving the reaction
14 H entering the reaction and 14 H leaving the reaction
Learn more about:
balancing chemical equations
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Explanation:
The given data is as follows.
Pressure of moist hydrogen gas = 1.018 atm
Pressure of water vapor = 
= 0.0421 atm
Formula to calculate the pressure of dry hydrogen gas is as follows.
Pressure of 
gas = 
Now, putting the given values into the above formula as follows.
Pressure of gas =
= 1.018 atm - 0.0421 atm
= 0.976 atm
Therefore, we can conclude that partial pressure of hydrogen gas in the given sample is 0.976 atm.
Answer: Option D
Explanation:
Chemotrophs can be defined as the organism which has the ability to get energy by the oxidation of electron donors present in the nearby environments.
These molecules in the environment can be organic or inorganic.These bacteria are usually called as thiobacillus denitrificans.
These bacteria reduce the nitrate into nitrite and the energy source for these bacteria is thiosulfate(sulfur).
