CHEMISTRY MIDDLE SCHOOL

How many moles are in 2.0 grams of Na?

Answers

Answer 1

Answer:

Answer:

Explanation:

Sodium metal has a molar mass of

22.99

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Which of the following is a solution: pure water, fruit punch, cereal and milk in a bowl? Explain how you know.

Which term refers to the process by which ions that have entered solution are kept in solution?dissociation
electrolyte
hydration
ionization

Answers

Answer : The correct option is, hydration

Explanation :

Hydration : It is a process in which the ion or substance combines with water and kept in the solution. In the hydration process the solvent is water molecule.

For example : When the sodium chloride is dissolved in the water then the positive sodium ion get surrounded by the water molecule through their oxygen ends and the negative chloride ion get surrounded by the water molecule through their hydrogen ends.

$NaCl+H_2O\rightarrow NaOH+HCl$

Dissociation : It is a process in which the compound splits or dissociates into to two or more smaller ions, atoms or particles.

Electrolyte : it is a process in which the a molecule is completely dissociates into their respective ions in the aqueous solution.

Ionization : It is a process in which a molecule acquire a positive or negative charged by the gaining or losing electrons.

Hence, the correct option is, hydration.

Answer:

c. hydration

Explanation:

edge 2021

In a strike-slip fault, the rocks on either side of the fault slip past each other sideways. Please select the best answer from the choices provided T F

Answers

its true i just toke it

In a strike-slip fault, the rocks on either side of the fault slip past each other sideways. The answer is True.

Planets in our solar system do not revolve around the sun in perfect circles. Their orbits are more like ovals that scientists describe as which of the following? A.
revolutionary

B.
rotational

C.
periodical

D.
elliptical

Answers

the answer is elliptical

Answer:

the answer is D

Explanation:

trust me brudda

What is the diffrence between speed and avarege speed

Answers

Speed is actually instantaneous speed, the speed an object is moving at that very instant.
But average speed is the total distance traveled divided by the total time.
Let's say you travelled 10 miles in 2 hours, your average speed would be 10 divided by 2, which is 10 miles / hr.

But during those 10 miles you may be accelerating, decelerating and be travelling 1 mile/hour and 20 miles/hour at another point. But your average speed would be total distance / total time. So your instantaneous speed can change throughout that period of time.

Average speed is the time in wchich you travelled a certain distance averaged out (distande divided by time)
Speed is just how fast an object moves

How many moles of HCl are present in 0.70 L of a 0.33 M HCl solution?a
0.23 mol
Ob
0.38 mol
0.28 mol
Od
0.47 mol

Answers

Answer:

0.23 mol

Explanation:

What type of solution is formed when steam from boiling water evaporates into the air

Answers

That specific kind is called gas.

When you put water in a freezing temprature it becomes solid.
When you boil water it becomes gas

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how does the processes of photosynthesis and cellular respiration allow for the flow of energy in organisms

The diagram below illustrates a chemical equation. Chemical equations can be used to model chemical changes and show how elements become rearranged during chemical reactions. Which statement about is chemical equation is true? A. Two compounds have reacted to produce one compound. B. Two elements have reacted to produce one element. C. One compound and one element have reacted to produce one compound. D. Two elements have reacted to produce one compound.

A rock at the top of a 30 meter cliff has a mass of 25 kg. Calculate the rock’s gravitational potential energy when dropped off the cliff. Assuming that energy is conserved and there is no air friction and gravity is 9.8 m/sec., at the bottom of the cliff the rock’s potential energy is completely converted to kinetic energy. Use the formula for kinetic energy to calculate the rock’s speed at the bottom of the cliff. Show all calculations.

A particular atom becomes more energetically stable when it loses a single electron. It is most likely an atom of which of the following elements?magnesium (Mg) cesium (Cs) fluorine (F) boron (B)