Answer:
Gravity
Explanation:
Nuclerar fusion and fission does include the others I think
Answer:
Check the answers in the explanation
Explanation:
The following are the answers
(1) if the solution is colourless : The answer is B Cr207
(2) If the solution gives no apparent reaction with dilute hydrochloric acid, : The answer is A CO3
(3) if No odour can be detected when a sample of the solution is added drop by drop to a warm solution of sodium hydroxide : The answer is C NH4
(4) If No precipitate is formed when a dilute solution of H2SO4 is added to a sample of the solution : The answer is D ba
It all depends on the objects' densities ,because if they're less dense than the oil they will not even sink to the bottom of the beaker
for the first one it is B OR THE SECOND OPTION
The correct answer is MgSO₄.7H₂O.
The hydrate of magnesium sulfate goes through dehydration due to action of heat. This procedure can be represented chemically as follows:
MgSO₄.XH₂O (5.018 g) = MgSO₄ (2.449 g) + XH₂O (2.569 g)
The number of moles of H2O evolved = 2.569 / molecular weight
= 2.569 / 18 = 0.1427
Number of moles of MgSO₄ produced after decomposition,
= 2.449 / molecular weight
= 2.449 / 120.37
= 0.0203
Now dividing both these numbers to obtain the mole ratio, which prevails between MgSO₄ and H₂O
For H2O = 0.1427 / 0.0203 = 7.02 or 7
Therefore, the formula for the hydrate is MgSO₄.7H₂O.