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2 years ago

PLEASE HELP!!!!!!!! giving brainlist

Chemistry

2 answers:

elena55 [62]2 years ago

7 0

Hot to cold thermal radiation

Bas_tet [7]2 years ago

4 0

Answer:

I can only give the answer for the first page.

Explanation:

1. Thermal energy always moves from hot objects to cold objects.

2. When two states of matter reach the same temperature, it is called thermal equilibrium.

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Ground glass is a/an _______ material. a) soft b) opaque c) translucent d) transparent

pochemuha

Answer:

Opaque Material

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2 years ago

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Balance this chemical equation. NH4OH AlCl3 → Al(OH)3; NH4Cl

skad [1K]

3NH4OH+AlCl3=Al(OH)3+3NH4Cl

7 0

2 years ago

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PLEASE HELP!!

VLD [36.1K]

1. does preparing food in different ways affect the calories and percents of certain things

2. prepare 3 foods in different types of ways(bake, fry, grill, microwave, boil, etc.)

6 0

3 years ago

The equilibrium 2NO(g)+Cl2(g)⇌2NOCl(g) is established at 500 K. An equilibrium mixture of the three gases has partial pressures

QveST [7]

Answer:

For A: The $K_p$ for the given reaction is $4.0\times 10^1$

For B: The $K_c$ for the given reaction is 1642.

Explanation:

The given chemical reaction follows:

$2NO(g)+Cl_2(g)\rightleftharpoons 2NOCl(g)$

For A:

The expression of $K_p$ for the above reaction follows:

$K_p=\frac{(p_{NOCl})^2}{(p_{NO})^2\times p_{Cl_2}}$

We are given:

$p_{NOCl}=0.24 atm\\p_{NO}=9.10\times 10^{-2}atm=0.0910atm\\p_{Cl_2}=0.174atm$

Putting values in above equation, we get:

$K_p=\frac{(0.24)^2}{(0.0910)^2\times 0.174}\\\\K_p=4.0\times 10^1$

Hence, the $K_p$ for the given reaction is $4.0\times 10^1$

For B:

Relation of $K_p$ with $K_c$ is given by the formula:

$K_p=K_c(RT)^{\Delta ng}$

where,

$K_p$ = equilibrium constant in terms of partial pressure = $4.0\times 10^1$

$K_c$ = equilibrium constant in terms of concentration = ?

R = Gas constant = $0.0821\text{ L atm }mol^{-1}K^{-1}$

T = temperature = 500 K

$\Delta ng$ = change in number of moles of gas particles = $n_{products}-n_{reactants}=2-3=-1$

Putting values in above equation, we get:

$4.0\times 10^1=K_c\times (0.0821\times 500)^{-1}\\\\K_c=\frac{4.0\times 10^1}{(0.0821\times 500)^{-1})}=1642$

Hence, the $K_c$ for the given reaction is 1642.

7 0

2 years ago

Does the chemical symbol of the element beryllium correspond to the name of the element?

LenKa [72]

Yes it does, its derived from the greek name for beryl, or beryllo

5 0

3 years ago