Solute definition chemistry

Answers

Answer 1

Answer: The solute is the substance that is being dissolved into the solvent.

Example:

In lemonade, the powder is the solute, and the water is the solvent.

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7 km is equal to:700 m0.7 m7,000 m70 m
Which of the following atoms has the same number of neutrons as 19F?a. 16O b. 18F c. 20Ne d. 23Na
An object of mass 1 kg contains 4 × 10²⁰ atoms. If one electron is removed for every atom of solid, the charge gained by solid in 1g is :
The Steller sea lion population has been decreasing in parts of Alaska. New evidence suggests that Steller sea lions need herring as a part of their diet in order to survive. Pollock, another type of fish, also feed on herring. Which would most likely help the Steller sea lion population to increase?
A neutral atom must have the same number of neutrons and electrons true or false

A sample of gas has increased in temperature from 20° Celsius to 22° Celsius. Which of the following happens as the temperature of the gas goes up? The gas undergoes a phase change.
The velocity of the gas particles decreases.
The kinetic energy of the particles increases.
An exothermic reaction is more likely to occur.

Answers

The correct answer for this question is the statement 'the kinetic energy of the particles increases'. As the temperature of gas goes up, the kinetic energy of the particles increases because their velocities increase. This is because particles get excited and hit each other more - leading to increase in kinetic energy.

Answer: The kinetic energy of the particles increases.

Explanation:

Average kinetic energy is defined as the average of the kinetic energies of all the particles present in a system. It is determined by the equation:

$K=(3RT)/(2)$

From above, it is visible that kinetic energy is directly related to the temperature of the system. So, if temperature is increased, average kinetic energy of the system also increases.

Also the velocity of the particles also increase as $K.E=(1)/(2)* mv^2$ .

What is true about the metals in group 1A, 2A, 3A?a)all form ions with negative charges
b)all have ions with a 1+ charge
c)gain electrons when they form ions
d)lose electrons when they form ions

Answers

D, becuase they have toatal no of valence electron as their group nmber and we know the metals are those who have 1,2,3 electrons in their outermost

Which best describes the effect of J. J. Thomson’s discovery?

Answers

The correct answer for the question that is being presented above is this one: "A. The accepted model of the atom was changed." J J Thomson discovered the electrons and performed experiment using the cathode ray tube
Here are the following choices:
A. The accepted model of the atom was changed.
B. The accepted model of the atom was supported.
C. Cathode ray tubes were no longer used in experiments due to poor results.
D. Cathode ray tubes became the only instrument of use in the study of atoms

What is the difference between a period and a group on the periodic table

Answers

A period is the colums goi
ng down on the periodic table, and the groups are the rows going across

Periods go left to right in a straight line. Anything in the same ROW is a Period.
Groups are up to down. These groups have the same number of outer shell electrons. There are 12 groups.

Use the ideal gas law to calculate the pressure in atmospheres of 0.21 mol of helium (He) at 16°C & occupying 2.53 L. You must show all of your work to earn credit. **Don't forget to convert your Celsius temperature to Kelvin***picture attached !!*

Answers

Answer:

The answer to your question is 2.32 atm

Explanation:

Data

P = ?

n = 0.214

V = 2.53 L

T = 61°C

R = 0.082 atm L/mol°K

Formula

PV = nTR

solve for P

P = nRT/V

Process

1.- Calculate the temperature in K

°K = °C + 273

°K = 61 + 273

= 334

2.- Substitution

P = (0.214 x 0.082 x 334) / 2.53

3.- Simplification

P = 5.86/2.53

4.- Result

P = 2.32 atm

Great amounts of atomic energy are released when a _______reaction occurs.

Answers

Great amounts of atomic energy are released when a _______reaction occurs.

Great amounts of atomic energy are released when a chemical reaction occurs. The process can be an exothermic reaction or endothermic reaction depending on the substances involved in the reaction.

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