CHEMISTRY HIGH SCHOOL

Calculate the number of moles56.75 g of Al(NO3)3
8.35 g of Al2(SO4)3
3.8 g of FeSO4

Answers

Answer 1
Answer: number of moles = mass /molar mass

Related Questions

Which statement must be true about a chemical system at equilibrium?(1) The forward and reverse reactions stop.(2) The concentration of reactants and products are equal.(3) The rate of the forward reaction is equal to the rate of the reverse reaction.(4) The number of moles of reactants is equal to the number of moles of product.
How many moles of water (H2O) would be produced if 10 moles of O2 gas reacted completely with excess H2 gas?2 H2(g) + O2(g) → 2 H2O(g)A. 5 B. 10 C. 20 D. 30 
What are 3 things an Apple, Knife and Mirror have in common?
How do I balance this science equation?
What is the term for a fine grained soil deposited by the wind

Which of the following is true about ions

Answers

Well, ionic bonds in chemistry are a bond between a metal and a non metal (left side of the periodic table and right)

Describe how you would use the information depicted in the potential energy diagram below to determine the enthalphy change of the reaction and if the reaction is endothermic or exothermic?

Answers

When the formation of a substance is negative, it means that it releases heat to the surroundings. When it releases heat to the surroundings, the reaction is exothermic. When it absorbs heat from the surroundings, the reaction is endothermic.

What is the chemical formula for mercury(I) nitrate

Answers

the formula for mercury(I) nitrate is Hg(NO3)2

Which statement best describes gamma radiation?(1) It has a mass of 1 and a charge of 1.
(2) It has a mass of 0 and a charge of –1.
(3) It has a mass of 0 and a charge of 0.
(4) It has a mass of 4 and a charge of +2.

Answers

The correct answer is option 3. Gamma radiation is a type of electromagnetic radiation which is characterized by having the smallest wavelength resulting to having the most energy in the electromagnetic spectrum. Gamma radiation has no mass and no charge.

Which of the following in NOT part of the structure of a news story?a. lead
b. climax
c. details
d. explanation

Answers

Answer:

The climax is not a part of a story

Explanation:

The structure of a story consists of three parts:

1.-The lead or the entrance. Main data of the news is presented.

2.-The body. Where it is explained how the events occurred.

3.-The closure. Complementary ideas are presented.

The news is a text whose function is to report a topic or fact. It is characterized by being topical and of public interest. It consists of three parts: input or lead, body and closure. The lead is the core of the news, the most important of the information, where a small summary of what the news will deal with is presented. The body expands the information that was anticipated in the lead by providing new data. And finally the closing, where the information of the news is complemented with some final ideas.
b because you have to lead with something than have details and what you are explaning

When the equation H2S + HNO3 → S + NO + H2O is balanced, what is the coefficient for H2O?

Answers

It isn't balanced. You have 3 *H and 3 * O, so something in the first formula must be changed. Have been searching for 1 hour and can't find the answer.

the answer is not 3 but i am guessing 6 please let me know
Other Questions
Which molecule is amphoteric?A. NH4+B. H2OC. H2CO3−D. H2SO4
Which of the following will result in a chemical change? A. Burning coal in a furnace B. Drying wood in a shed C. Melting ice to obtain water D. Evaporating alcohol into vapor
What is the percentage of nitrogen in N2O
The atomic mass of titanium is 47.88 atomic mass units. This atomic mass represents the - explain please!