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2 years ago

15

Equal masses of two substances absorb the same amount of heat. The temperature of a substance A increases twice as much as subst

ance B. Which substance has a higher specific heat capacity?
A. Substance A
B. Substance B

1 answer:

katrin [286]2 years ago

7 0

Letter A because the temperature of a substance A increases "Twice as much".

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a chemist measured 75.00g of HCL into a volumetric flask and added water until the volume was 1.000 L. what is the molarity of t

Aleks04 [339]

Answer: M = 2.08 M

Explanation: Molarity is expressed as the number of moles per unit volume in liters. First convert the mass of HCl to moles using its molar mass. Then substitute the variables to the formula for molarity.

75.00 g HCl x 1 mole HCl / 36 g HCl

= 2.08 moles HCl

For Molarity.

M = n / L

= 2.08 moles HCl / 1.000 L

= 2.08 M

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3 years ago

Write a report on waves

Bad White [126]

Answer:

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Explanation:

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2 years ago

For the reaction 2 H2S(g) D 2 H2 (g) + S2 (g), Kp = 1.5 × 10−5 at 800.0°C. If the initial partial pressures of H2 and S2 in a cl

Usimov [2.4K]

Answer: The approximate equilibrium partial pressure of $H_2S$ is 3.92 atm

Explanation:

Equilibrium constant is the ratio of the concentration of products to the concentration of reactants each term raised to its stochiometric coefficients.

The given balanced equilibrium reaction is,

$2H_2S(g)\rightleftharpoons 2H_2(g)+S_2(g)$

$K_p=\frac{[H_2]^2\times [S_2]}{[H_2S]^2}$

$1.5\times 10^{-5}=\frac{[H_2]^2\times [S_2]}{[H_2S]^2}$

On reversing the reaction:

$2H_2(g)+S_2(g)\rightleftharpoons 2H_2S(g)$

initial pressure 4.00atm 2.00 atm 0

eqm (4.00-2x)atm (2.00-x) atm 2x atm

$K_p=\frac{[H_2S]^2}{[H_2]^2\times [S_2]}$

$K_p'=\frac{1}{K_p}=0.67\times 10^5$

$2H_2(g)+S_2(g)\rightleftharpoons 2H_2S(g)$

$0.67\times 10^5=\frac{2x]^2}{[4.00-2x]^2\times [2.00-x]}$

$x=1.96$

$[H_2S]=2x=2\times 1.96=3.92 atm$

Thus approximate equilibrium partial pressure of $H_2S$ is 3.92 atm

3 0

3 years ago

Consider the reaction between no and cl2 to form nocl: 2no(g)+cl2(g)⇌2nocl(g) a reaction mixture at a certain temperature initia

AlladinOne [14]

Answer:

Kc = 0.402.

Explanation:

We can calculate Kc from the relation: Kc = [NOCl]² / [NO]²[Cl₂].

[NOCl] = 0.30 M, [NO] = 0.65 M, and [Cl₂] = 0.53 M.

Now, we can get Kc:

Kc = [NOCl]² / [NO]²[Cl₂] = (0.30 M)² / [(0.65 M)².(0.53 M)] = 0.402.

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3 years ago

The maximum depth of Lake Tahoe is 99.6 rod. How deep is Lake Tahoe in fathoms if one fathom-0.364 rod? ball part 250-300 fathom

Romashka [77]

Answer:

273.9 fathom

Explanation:

Fathom (ftm) and rod are the units of length used in the imperial and the U.S. customary systems.

Fathom is an unit used for the measurement of depth of water. It is equal to 1.8288 m.

Rod, also known as perch or pole, is equal to 5.0292 m.

∵ 1 fathom = 0.364 rod

and 1 rod = 2.75 fathom

∴ 99.6 rod = 99.6 × 2.75 fathom = 273.9 fathom

<u>Therefore, maximum depth of Lake Tahoe = 99.6 rod = 273.9 fathom</u>

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2 years ago