All categories

3 years ago

TRUE OR FALSE

1 answer:

3 0

It depends on what unit/subject you're looking at.

Because in physics, I know that if you are considering Newton's theory of particles, all particles technically go in a straight line from the original direction. BUT, if you're looking at the Wave of the Particle theory, then you would assume that particles do not necessarily follow the above b/c they follow the properties of a wave...

You might be interested in

Below is a list of terms used in characterizing solutions. Enter the correct term for each sentence. Note that not all of the te

AlladinOne [14]

Answer:

molality, mole fraction, solvent, solute, molarity.

Explanation:

The expression of concentration that provides the moles of solute per kilograms of solvent is molality.

$b=\frac{n_{solute}}{m_{solvent}(kg)}$

If you place 5 moles of sodium chloride and 4 moles of sucrose into 11 moles of water, the mole fraction of sodium chloride would be 0.25

$X(NaCl)=\frac{molesNaCl}{moles_{solution}} =\frac{5mol}{20mol} =0.25$

A solution is made up of 0.15 grams of sodium chloride in 1 liter of water. For this solution, the solvent is water.

The solvent is the component in major proportion and the one that defines the state of the solution.

A solution is made up of 0.15 grams of sodium chloride in 1 liter of water. For this solution, the solute is sodium chloride.

The solute is the component in minor proportion.

A way to express concentration that provides the moles of solute per liter of solution is molarity.

$M=\frac{n_{solute}}{V_{solution}(L)}$

3 0

3 years ago

I need help with the question they are asking

Ierofanga [76]

Answer:

i wish i could help but people are around me

Explanation:

5 0

3 years ago

NEED SOME CHEM HELP

zloy xaker [14]

Hello!

The substances, ordered according to their dissolving time in water, are the following

Sugar Cubes > Granulated Sugar > Powdered Sugar

The difference between these substances is the degree of order. According to collision theory, for a substance to be dissolved, successful collisions between solvent molecules and solute molecules need to happen. as molecules are more ordered, successful collisions are less likely to happen, because atoms are fixed into a crystalline structure.

When the molecule is less ordered, successful collisions are more likely to occur, as the atoms can be impacted from different sides and aren't fixed into a given position.

As the degree of order increases, the dissolving time in water will be higher too, as more time would be required for successful collisions to happen. The most ordered substance is sugar cubes, followed by granulated sugar and powdered sugar, and that order is the same as the order for dissolving time.

Have a nice day!

7 0

4 years ago

How many electrons does the first energy level of an atom have?

devlian [24]

If im not mistaken about like three orr four
yea its four cuz its hard to exaplin lol

3 0

3 years ago

Read 2 more answers

Convert the following into balanced equations:

enyata [817]

Pb(NO₃)₂ + 2KI → PbI₂ + 2KNO₃

We must first convert from a word equation to a symbol equation:to a symbol equation:

Lead (II) Nitrate + Potassium Iodide → Lead (II) Iodide + Potassium Nitrate

The lead (II) ion is represented as Pb²⁺ , whilst the nitrate ion is NO⁻₃

To balance the charges, we require two nitrate ions per lead (II) ion, and so lead (II) nitrate is Pb(NO₃)₂

The potassium ion is K ⁺ and the iodide ion is I ⁻

The two charges balance in 1:1 ratio, giving a formula of KNO₃

The symbol equation is as follows:

Pb(NO₃)₂ + KI →PbI₂ + KNO ₃

The most obvious change we must make, when balancing this equation, is to increase the number of nitrate ions on the right hand side of the equation. We can to this by placing a coefficient of 2 before the potassium nitrate:

Pb(NO₃)₂ +KI →PbI₂ +2KNO₃

In doing this we have upset the balance of potassium ions on each side of the equation.

Again, we can fix this: we must simply place another coefficient of 2, this time before the potassium iodide:

Pb(NO₃)₂ +2KI → PbI₂ +2KNO ₃

Concluding :

Checking over the equations once more, you will notice that we initially had 1 iodide ion on the right hand side, but 2 on the left. However, we already dealt with this in balancing out potassium ions. Now, our equation is balanced.

And that's it! One last thing to add is that you may have noticed the irregularity in iodide ions rather than nitrate ions. In this case, you would arrived at the same answer simply by working backwards.

Learn more about balanced equation :

brainly.com/question/26694427

#SPJ4

3 0

2 years ago