Answer:
According to the law of conservation of mass, the mass of the reacting substances is equal to the mass of the product formed during a reaction.
Explanation:
Answer:
To convert among units in the metric system, identify the unit that you have, the unit that you want to convert to, and then count the number of units between them. If you are going from a larger unit to a smaller unit, you multiply by 10 successively. If you are going from a smaller unit to a larger unit, you divide by 10 successively
Explanation:
hope it helps
Answer:
Hope this helps!
Explanation:
The molarity of a given solution is defined as the total number of moles of solute per litre of solution.
\(Molarity = \frac{n}{V}\)
Here,
M is the molality of the solution
n is the number of moles of the solute
V is the volume of solution given in terms of litres
Molecular weight of oxalic acid (H2C2O4.2H2O) = 126 g/mol.
M = n/V
0.1 M = n/0.25L
n = 0. 025 mol
Number of moles = Given mass/Molar mass
0. 025 mol = m / 126
m = 3.15 g
So, amount of oxalic acid is 3.15 g
Answer: The correct answer is (D).
Explanation:
Space photography help astronomers:
- To visualize and observe the position and appearance of celestial objects like: path of orbiting planets ,dim stars which invisible to naked eyes ,far away galaxies etc.
- To observe any phenomena which is occurring at macro level for example: collision of steroids and meteors etc.
