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Lorico [155]
3 years ago
9

I WILL GIVE BRAINLIEST!!!!

Chemistry
1 answer:
prisoha [69]3 years ago
4 0
The answer is A) Actinides
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When molybdate (MoO3) and Zinc (Zn) are heated together they react in this equation:
schepotkina [342]

Answer: The mole ratio of Zn to ZnO is 3: 3.

Explanation:

According to law of conservation of mass, mass can be neither be created nor be destroyed. The mass on reactant side must be equal to the mass on product side. Thus the atoms of each element on both side of the reaction must be same.

The balanced chemical reaction is:

3Zn+2MoO_3\rightarrow Mo_2O_3+3ZnO

Here 3 moles of Zn combine with 2 moles of MoO_3 to give 1 mole of Mo_2O_3 and 3 moles of ZnO. Thus the mole ratio of Zn to ZnO is 3: 3.

5 0
3 years ago
What is a closed container in relation to the law of conservation of matter
Brums [2.3K]
The law of conservation of mass or principle of mass conservation states that for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as system mass cannot change quantity if it is not added or removed. Hence, the quantity of mass is "conserved" over time.
6 0
3 years ago
If 35 ml of 6.0 m h2so4 was spilled, calculate the minimum mass of nahco3 that must be added to the spill to neutralize the acid
belka [17]

The balanced equation between the H_2SO_4 and NaHCO_3 is:

H_2SO_4+2NaHCO_3\rightarrow Na_2SO_4+2CO_2+2H_2O

Formula of molarity is:

Molarity = \frac{Moles of solute}{Volume of solution in Liters}

Molarity = 6.0 M, Volume = 35 mL = 0.035 L

Substituting the values,

6 = \frac{Moles of solute}{0.035}

Moles of solute = 0.035 L\times 6 mol/L = 0.21 mole

So, number of moles of H_2SO_4 is 0.21 mole.

From the balanced equation it is clear that for 1 mole of H_2SO_4, 2 moles of NaHCO_3 are required.

Hence, 0.21 mole of H_2SO_4  = 2\times 0.21 mole = 0.42 mole of NaHCO_3

Molar mass of NaHCO_3 = 84.007 g/mol

So, the mass of NaHCO_3 = 84.007 g/mol \times 0.42 mol = 35.283 g




6 0
3 years ago
Answer, please!!!!!!
pshichka [43]

Answer:

C. SOIL THAT IS A MIXTURE OF STILT AND CLAY

PLS MAKE ME BRAINLEST!

5 0
3 years ago
Which statement is true when a crystal is formed from many metal atoms? .A. There are no bands being formed.. B.There are many m
alexdok [17]
Well, even though it may look like the last option is the correct one, that one is wrong. When a crystal s formed from many metals there are many milecular orbitals. So the answer is B. Hope this is what you are looking for
6 0
3 years ago
Read 2 more answers
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