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nikitadnepr [17]

2 years ago

14

Chlorine is more reactive than nitrogen why

1 answer:

OLga [1]2 years ago

4 0

But nitrogen is inert at room temperature whereas chlorine is highly reactive, the reason is: Nitrogen exists as N triple bond N at room temperature while chlorine exists as Cl single bond Cl at room temperature. Since the bond dissociation energy of triple bond is larger than that of single bond.

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How many moles of NaCl are needed to make 10.0L of a 5 M solution of<br> Salt water?*

vesna_86 [32]

Answer: 50 mol

Explanation:

$Molarity=\frac{Moles -of -solute}{liters -of -solution}$

$M=\frac{mol}{L}$

$mol=M*L$

$mol=5*10\\mol=50mol$

3 0

2 years ago

Does anybody know how to do q4. Please show working out thanks.

insens350 [35]

Answer:

% purity of limestone = 96.53%

Explanation:

Question (4).

Weight of impure CaCO₃ = 25.9 g

Molecular weight of CaCO₃ = 40 + 12 + 3(16)

= 100 g per mole

We know at S.T.P. number of moles of CO₂ = 1 and volume = 22.4 liters

From the given reaction, 1 mole of CaCO₃ reacts with 1 mole or 22.4 liters of

CO₂.

∵ 22.4 liters of CO₂ was produced from CaCO3 = 100 g

∴ 1 liter of CO₂ will be produced by CaCO₃ = $\frac{100}{22.4}$

∴ 5.6 liters of CO₂ will be produced by CaCO₃ = $\frac{100\times 5.6}{22.4}$

= 25 g

Therefore, % purity of CaCO₃ = $\frac{\text{Weight calculated}}{{\text{Weight given}}}\times 100$

= $\frac{25}{25.9}\times 100$

= 96.53 %

7 0

3 years ago

Would the following atoms have similar reactivity?

Sergio [31]

I think D, not sure though!

3 0

2 years ago

Read 2 more answers

GUYS I NEED HELP NOW PLEEAAASSSSSE!!!!! LOOK AT BOTH PICS! <br> OPTIONS ARE IN THE 2ND PIC

True [87]

Answer:

gravitational potential enrgy

i new to brainly so pls support me

7 0

3 years ago

The specific heat of a substance is the heat that must be absorbed to increase the temperature of 1 gram of a substance by 1 deg

Vlad1618 [11]

Answer:

True.

Explanation:

Specific heat is the amount of heat required to raise one gram of a particular substance by one degree Celsius or Kelvin.

Formula for calculating specific heat is the amount of heat absorbed or released = mass x specific heat x change in temperature.

= m * Cp * delta T

4 0

3 years ago