All categories

2 years ago

Two different liquids are mixed together. Which observation indicates that an exothermic chemical reaction has taken place?

Chemistry

1 answer:

Lilit [14]2 years ago

6 0

Answer:

rise in temp I think

Explanation:

You might be interested in

a container holds 7.4 moles of gas hydrogen gas makes up 25% of the total moles in the container if the pressure is 1.24 atm wha

Tema [17]

This question is based on Dalton's Law of Partial Pressure which states that "the total pressure of a system of gas is equal to the sum of the pressure of each individual gas (partial pressure).

Now, Partial Pressure of a gas = (mole fraction) × (total pressure)

⇒ Partial Pressure of Hydrogen = $\frac{1}{4}$ × $\frac{1.24}{1}$

= 0.31 atm

Thus the Partial Pressure of Hydrogen in the container is 0.31 atm.

6 0

3 years ago

Which response is a positive way to manage stress?

Xelga [282]

Answer: Eating healthy is a postive way

Explanation:

6 0

3 years ago

What is a percent volume of ethanol c2h60 in the final solution when 85 ml of it is diluted to a volume?

Ilya [14]

34% I believe

Hope this helps!
STSN

3 0

3 years ago

a particular application calls for N2 g with a density of 1.80 g/L at 32 degrees C what must be the pressure of the n2 g in mill

baherus [9]

Answer:

1223.38 mmHg

Explanation:

Using ideal gas equation as:

$PV=nRT$

where,

P is the pressure

V is the volume

n is the number of moles

T is the temperature

R is Gas constant having value = $62.3637\text{ L.mmHg }mol^{-1}K^{-1}$

Also,

Moles = mass (m) / Molar mass (M)

Density (d) = Mass (m) / Volume (V)

So, the ideal gas equation can be written as:

$PM=dRT$

Given that:-

d = 1.80 g/L

Temperature = 32 °C

The conversion of T( °C) to T(K) is shown below:

T(K) = T( °C) + 273.15

So,

T = (32 + 273.15) K = 305.15 K

Molar mass of nitrogen gas = 28 g/mol

Applying the equation as:

P × 28 g/mol = 1.80 g/L × 62.3637 L.mmHg/K.mol × 305.15 K

⇒P = 1223.38 mmHg

<u>1223.38 mmHg must be the pressure of the nitrogen gas.</u>

5 0

3 years ago

What chemical bond will S and H form

Over [174]

Answer:

hydrogen sulfide (H2S)

Explanation:

8 0

3 years ago