3 years ago

Can anyone help me for these 2 questions

Chemistry

1 answer:

Fynjy0 [20]3 years ago

3 0

1.D 2.A that is pretty hard

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List the four forms of acid deposition.

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rain, snow, cloud, fog or dry deposition - Dry particles, or gas

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3 years ago

Complete balanced equation for the reaction between aluminum metal (Al) and oxygen gas (O2)

WARRIOR [948]

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What makes the geometry of the tin(4) hydride to have a grater stability?

shtirl [24]

wet seving has ben

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2 years ago

When 0.250 moles of LiCl are added to 200.0 g of water in a constant pressure calorimeter a temperature change of +11.08°C is ob

Nonamiya [84]

Answer:

3.91 × 10⁴ J/mol

Explanation:

We can calculate the heat of solution using the following expression.

Q = c × m × ΔT

where,

c is the specific heat capacity of the solution

m is the mass of the solution

ΔT is the change in the temperature

The mass of LiCl is:

$0.250mol.\frac{42.39g}{mol} =10.6g$

The mass of the solution is:

m = mLiCl + mH₂O = 10.6 g + 200.0 g = 210.6 g

Q = c × m × ΔT = (4.184 J g⁻¹ °C⁻¹) × 210.6 g × 11.08 °C = 9763 J

In a constant pressure calorimeter, the molar enthalpy of solution for LiCl is:

$\Delta H_{sol}=\frac{9763J}{0.250mol} =3.91 \times 10^{4} J/mol$

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3 years ago

Why is it possible to bend metals but not ionic crystals

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It pushes the positive ions together, the positive ions repel each other, causing the crystal to shatter

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