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Fed [463]
3 years ago
12

Calculate the number of grams in magnesium present in 25 g of magnesium phosphate

Chemistry
2 answers:
Ilya [14]3 years ago
6 0
25 g of Mg3(PO4)2 is about 0.096 mol so each mol of that is equal to 3 mols of Mg
which leads to about 6.9 g of Mg
Mg : 24 g/mol
P : 30 g/mol
O : 16 g/mol
olga55 [171]3 years ago
4 0

you can google it and it pops up right away

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What is meant by bio chamistery ,industtial chemistery and organic chemistery ?​
Inessa [10]
Bioorganic chemistry is a rapidly growing scientific discipline that combines organic chemistry and biochemistry. It is that branch of life science that deals with the study of biological processes using chemical methods.
8 0
3 years ago
What is the volume of 3.00 M sulfuric aid that contain 9.809 g of H2SO4 (98.09g/mol)
Slav-nsk [51]

Given :

Molarity of sulfuric acid solution is 3.0 M.

Amount of sulfuric acid present in solution is 9.809 g.

To Find :

The volume of solution.

Solution :

We know, molarity is given by :

Molarity = \dfrac{number \ of \ moles \times 1000}{Volume\ ( ml )}\\\\M = \dfrac{w \times 1000}{M.M \times V}\\\\3 = \dfrac{9.809\times 1000}{98.09 \times V}\\\\V = \dfrac{1000}{10\times 3}\  ml\\\\V = 33.33 \ ml

Therefore, volume required is 33.33 ml .

5 0
3 years ago
Which of the following statements is true? A) This reaction will be spontaneous only at high temperatures. B) This reaction will
viktelen [127]

Answer:

D) This reaction will be nonspontaneous only at high temperatures.

Explanation:

According the equation of Gibb's free energy -

∆G = ∆H -T∆S

∆G = is the change in gibb's free energy

∆H = is the change in enthalpy

T = temperature

∆S = is the change in entropy .

And , the sign of the  ΔG , determines whether the reaction is Spontaneous or non Spontaneous or at equilibrium ,

i.e. ,

if

  • ΔG < 0 , the reaction is Spontaneous
  • ΔG > 0 , the reaction is non Spontaneous
  • ΔG = 0 , the reaction is at equilibrium

The reaction has the value for ∆H = negative , and ∆S = negative ,

Now ,

∆G = ∆H -T∆S

     = ( - ∆H ) - T( - ∆S )

     =  ( - ∆H ) +T(  ∆S )

Now, for making the reaction Spontaneous ΔG = negative ,

Hence ,

The temperature is low, then the value for  ΔG will be negative , i.e. , Spontaneous reaction .

And , vice versa , at higher temperature , the reaction will have ΔG positive , and the reaction will be non -Spontaneous reaction .

The standard free energy of formation will be zero , only for the compounds that are in their pure form ,

Hence , Al(s) will have ΔG = 0 .

7 0
3 years ago
How many moles of argon are in 24.3 g of argon
maksim [4K]

Answer:

0.607mol

Explanation:

n(AR) = mass / molar máss

= 24.3 /40

=0.607

3 0
3 years ago
Read 2 more answers
What formula do you use to calculate the heat in a endothermic reaction?
leva [86]
Reactants + Energy → Products
I guess this is the answer
You’re welcome ;)
4 0
3 years ago
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