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Vedmedyk [2.9K]
3 years ago
10

It’s a Gas!

Chemistry
1 answer:
Zielflug [23.3K]3 years ago
8 0
6.) 1
7.) 1
8.) 4
9.)4
10.) 4
11.) 4

I am pretty sure this is the answer
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In the molecular formula 4Al(OH)₃ - the number "4" is the ___________ and it tells you_______
AleksAgata [21]

Answer:

2.coefficient how many molecules of Aluminum hydroxide there are

3 0
3 years ago
In which chemical reaction will be heat content of the reactance be more that of the products
Anuta_ua [19.1K]
A reaction in which energy is absorbed from the surroundings is called anendothermic<span> reaction. In </span>endothermic<span> reactions the enthalpy of the products is greater than the enthalpy of the reactants. Because reactions release or absorb energy, they affect the temperature of their surroundings.

</span>
3 0
4 years ago
If the NaOH is added to 35.0 mL of 0.167 M Cu(NO3)2 and the precipitate isolated by filtration, what is the theoretical yield of
Ghella [55]

Answer:

The correct answer is - 0.570 grams

Explanation:

The balanced chemical reaction is given by

Cu(NO3)2(aq)     + 2NaOH(aq)    -------->    Cu(OH)2(s)      + 2NaNO3(aq)

        1.0 mole            2.0 mole                 1.0 mole          2.0 mole

number of mol of Cu(OH)2,

n = Molarity * Volume

= 35.0*0.167 = 5.845 millimoles

As clear in the equation, 1 mole of Cu(NO3)2 gives 1 mole of Cu(OH)2 , So, 5.845 millimoles of Cu(NO3)2 will produce 5.845 millimoles of Cu(OH)2

Mass of Cu(OH)2 = number of mol * molar mass

= 97.5*5.845*10^-3

= 0.570 grams

Thus, the correct answer is - 0.570 grams

8 0
3 years ago
Density is defined as
Svetlanka [38]

Answer:

Density is normally used in Chemistry and it means 'A measure of mass per volume' or simply defined as the measurement that compares the amount of matter an object has to its volume!

Hope this helped :3

3 0
3 years ago
What is the pressure exerted by a force of 15.0 N over an area of 0.00372 m^2 ?
aleksandrvk [35]

Explanation:

Pressure = Force/Area

therefore,

P = 15/0.00372

= 4.03 X10^³N/m²

6 0
2 years ago
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