.
You should be able to
these groups on the periodic table, and know their
properties.

Answer:

5.2g potassium chlorate is needed to do so

Explanation:

there are 8 atoms of hydrogen

Answer:

1.45 is larger for density

The charge on an atom = # of protons - # of electrons

                                       = 10 - 8

                                       = +2

Answer:

b

Explanation:

mark me as brainliest have a great day

d= m/v

1.0=m/1cm^3

1.0×1cm^3=m

m=1kg/cm^3

Answer:

0.08 M

Explanation:

here...

1. water and a salt

2. Magnesium hydroxide reacts with HCl to produce a solution that is neutral.

3. titrant

4. 0.08 M

5. indicator

{quizlet: captncrun}

The concentration of sodium hydroxide is 0.08 M. The correct option is the second option 0.08 M

From the question,

We are to determine the concentration of sodium hydroxide

The given reaction is

HCl + NaOH → NaCl + H₂O

This means

1 mole of HCl is required to completely neutralize 1 mole of NaOH

To determine the concentration of sodium hydroxide,

We will use the formula

[tex]\frac{C_{A}V_{A} }{C_{B}V_{B}} = \frac{n_{A}}{n_{B}}[/tex]

Where

[tex]C_{A}[/tex] is the concentration of acid

[tex]C_{B}[/tex] is the concentration of base

[tex]V_{A}[/tex] is the volume of acid

[tex]V_{B}[/tex] is the volume of base

[tex]n_{A}[/tex] is the mole ratio of acid

[tex]n_{B}[/tex] is the mole ratio of base

From the give information

[tex]C_{A} = 0.10 \ M[/tex]

[tex]V_{A} = 40 \ mL[/tex]

[tex]V_{B} = 50 \ mL[/tex]

From the balanced chemical equation

[tex]n_{A} = 1[/tex]

[tex]n_{B} = 1[/tex]

Putting the above parameters into the formula, we get

[tex]\frac{0.10 \times 40}{C_{B} \times 50} = \frac{1}{1}[/tex]

Then

[tex]C_{B} \times 50 = 0.10 \times 40[/tex]

∴ [tex]C_{B}=\frac{0.1 \times 40}{50}[/tex]

[tex]C_{B}=\frac{4}{50}[/tex]

[tex]C_{B}=0.08[/tex]

Hence, the concentration of sodium hydroxide is 0.08 M. The correct option is the second option 0.08 M

Learn more here: https://brainly.com/question/14753195

Answer:

0.001mol

Explanation:

volume (NaOH) =25cm³ =0.025dm³

molar volume = 22.4dm³

n = V = 0.025 = 0.001mol

Vm 22.4

Answer:

on the other hand

Explanation:

I think its correct

When you rub an inflated balloon on your head and it makes your hair stand up, the force that makes the hair stand up is known as static electricity.

When the balloon is rubbed on the head, electrons from the hair atoms move into the balloon, thus making the balloon to be negatively charged and the hair positively charged due to loss of electrons.

Unlike charges attracts. Thus, when you try to pull the balloon away slowly, the positively charged hair and the negatively charged balloon will attract each other and this is usually what makes the hair stand up.

More on static electricity can be found here: https://brainly.com/question/24160155

Answer:

static electricity

Explanation:

this is because there is an imbalance between negative and positive charges

when you keep on rubbing, a negative charge is created which is carried by electrons.

when you pull the balloon away slowly, the opposite charges attract to each other which makes your hair attract to the balloon

Answer:

b

Explanation:

Answer:

force or velocity

Explanation:

I am not sure

Answer:

phosphorus

Explanation:

Answer:

Iron(III) oxide

Explanation:

Answer:

ExplanationWhat are the properties of potassium?

Image result for give one other difference between the properties of copper and potassium

Potassium metal is soft and white with a silvery lustre, has a low melting point, and is a good conductor of heat and electricity. Potassium imparts a lavender colour to a flame, and its vapour is green. It is the seventh most abundant element in Earth's crust, constituting 2.6 percent of its mass.:

Difference between copper and potassium is the valence electron of sodium is in the 3s orbital whereas the valence electron of potassium is in the 4s orbital.

Potassium metal is soft and white with a silvery luster, has a low melting point, and is a good conductor of heat and electricity.

It is malleable, ductile, and an extremely good conductor of both heat and electricity. It is softer than zinc and can be polished to a bright finish.

Learn more about the copper and potassium here: brainly.com/question/15987580

#SPJ2

Answer:

10CO²+4H²O

Explanation:

that Brainliest me pls

Answer:

I believe the answer is B. Carbonates

Explanation:

Answer:

cup c will dissolve the fastest

Explanation:

Because the particle size is smaller, the water can dissolve them quicker as the smaller the particle, the more surface are for the water to dissolve.

Answer:

1. Ar, Cl, Al, Mg, Na

2. O, S, Se, Te, Po

Explanation:

Just remember the trends. From left to right, atomic radius decreases because proton increases and pulls electrons closer. From top to bottom, atomic radius increases because there are more electron shells.

Answer:

They have the same number of charged protons and electrons, therefore balancing positive and negative charges. I hope this helps you.

Explanation:

Structure V reacts fastest with trimethylamine in SN2 reaction. Owing to less steric crowding in the transition state and ease of cleavage of the R - I bond

The question is incomplete, the complete question is shown in the image attache to this answer.

SN2 reaction is a type of nucleophilic reaction in which the nucleophile attacks the substrate from the reverse side. This is a synchronous reaction because the leaving group departs as the entering group attacks simultaneously in a hypervalent transition state.

SN2 reaction is favored by structure V owing to less steric crowding in the transition state and the easy of cleavage of the R - I bond. Hence, structure V reacts fastest with trimethylamine in SN2 reaction.

Learn more: https://brainly.com/question/13721588

Answer:

B I and II

Explanation:

warming and melting.

please mark me brainliest

Answer:

Explanation:

Hi! can you add the choices.

Answer:

Neptune and Saturn although Neptune isn't on there so just Saturn.

hope it'll help ya out!

Answer:Accuracy Thermometers used to measure the temperature of food need to be accurate to +/-2°F or +/-1°C. Thermometers used to measure air temperature in food storage equipment need to be accurate to +/-3°F or +/- 1.5°C. A hanging thermometer in a walk-in cooler is an example.

Explanation:

Answer:

a

Explanation:

a

Answer:

14

Explanation: