A prokaryotic cell does not have
А
a cell membrane.
B
genetic material.
C
a nucleus.
D
flagella.

Answer:

b) ions

Explanation:

Answer: all of the above

Explanation:

Answer:

A. Empirical formula => C₂H₄O

B. Molecular formula => C₄H₈O₂

Explanation:

From the question given above, the following data were obtained:

Mass of C = 0.273 g

Mass of H = 0.046 g

Mass of O = 0.182 g

Molar mass of compound = 88 g/mol

A. Determination of the empirical formula of the compound.

C = 0.273 g

H = 0.046 g

O = 0.182 g

Divide by their molar mass

C = 0.273 /12 = 0.023

H = 0.046 /1 = 0.046

O = 0.182 /16 = 0.011

Divide by the smallest

C = 0.023 / 0.011 = 2

H = 0.046 / 0.011 = 4

O = 0.011 / 0.011 = 1

Thus, the empirical formula of the compound is C₂H₄O

B. Determination of the molecular formula of the compound.

Empirical formula = C₂H₄O

Molar mass of compound = 88 g/mol

Molecular formula =?

Molecular formula = [C₂H₄O]ₙ

[C₂H₄O]ₙ = 88

[(12×2) + (4×1) + 16]n = 88

[24 + 4 + 16]n = 88

44n = 88

Divide both side by 44

n = 88 / 44

n = 2

Molecular formula = [C₂H₄O]ₙ

Molecular formula = [C₂H₄O]₂

Molecular formula = C₄H₈O₂

Answer:

1. covalent

2. polyatomic ion

Explanation:

:)

Answer:

1) b

2)c

Explanation:

Answer:

s+o2=so2

Explanation:

i hope it will help u

Answer:

A. Florine has a stronger pull than Magnesium

Explanation:

Electronegativity refers to the tendency in which an tom would attract electrons to itself.

Below each element in the periodic table is their electronegativity value. Florine has the highest electronegativity value of 4.0.

Going through options;

A. Florine has a stronger pull than Magnesium

Florine = 4.0

Magnesium = 1.2

This correct

B. Hydrogen has a stronger pull than Phosphorus

Hydrogen = 2.1

Phosphorus = 2.1

This is wrong

C. Potassium has a stronger pull than Sodium

Potassium = 0.8

Sodium = 0.9

This is wrong

D. Iron has a stronger pull than Bromine

Iron = 1.8

Bromine = 2.8

This is wrong

sorry the pic is blocked

Answer:

H

Explanation:

b/c the polyatomic PO4¯³

have 3 valance number

Answer:

Solar energy is energy from the sun. for example solar panels are used to use energy for the sun to give you eletricity.

Explanation:

Explanation:

solar energy is energy from the sun, it can be used for electricity.

Answer:

eyes

Explanation:

It is because the mouth, large intestine and stomach comes in the digestive system abd eyes doesn't.

HOPE THIS HELPS

Answer: Electrons have wavelike motion and are restricted to certain energy states associated with specific wavelengths.

Answer:

That leaves us with: 1s2 2s2 2p6 And that is the electron configuration for F- , the Fluoride ion.

Explanation:

plz give brainliest

Answer:

Contact

Explanation:

As the speed of the particles increases, they move around more, which means they hit the sides of the container more.

Answer:

B

the humidity is the % of water in the air and it is out of 100% of the air. so 10/100 is low

Answer:

B

Explanation:

30%-50% is considered moderate. Anything below 30% is considered dry, anything above 50% is considered high. I hope this helps!

Answer:

Birds evolved from a group of meat-eating dinosaurs called theropods. That's the same group that Tyrannosaurus rex belonged to, although birds evolved from small theropods, not huge ones like T. rex.

Answer:

we haven't done anything to study the roots of the bird yet

Answer:

id give you and 8 or 9 but you are really pretty tho

Explanation:

Option (1) represents the Lewis electron-dot diagram correctly containing nitrogen in the equation.

Lewis Structure is a very simplified representation of the valence shell electrons in a molecule.  It is used to show how the electrons are arranged around individual atoms in a molecule. Electrons are shown as "dots" or for bonding electrons as a line between the two atoms.

Valence electrons are given by hydrogen atoms = [tex]1\times3=3[/tex]

Valence electrons are given by nitrogen atom = [tex]5\times1=5[/tex]

Total valence electrons = 3 + 5 = 8

So, the calculation above is shown only the first option. So, (1) Lewis electron-dot diagram correctly represents the reactant containing nitrogen in the equation.

To know more about:-

brainly.com/question/20300458

Answer:

Exothermic reaction

Explanation:

Exothermic reaction is a reaction in which energy is evolved from the reaction to the surroundings

Answer:

The remaining gas is a mixture of argon, neon, krypton, and xenon. Because these elements are chemically very unreactive, chemical means cannot be used to separate them.

Explanation:

Answer:

They're in Group 0 as they have full outer shells meaning they are chemically unreactive as they already have full outer shells meaning they don't want to lose or gain any electrons. Thus, they can't separate during the separation of gases in the air.

Answer:

For balancing this equation

we need to put

Ag2O. = 2

Ag = 4

O2 = 1

Hope it will help

The balanced chemical equation of decomposition of silver oxide is 2 Ag₂O -> 4 Ag + O₂.

Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.

A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .

The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.

Learn more about chemical equation,here:

https://brainly.com/question/28294176

#SPJ5

Answer:

A

Explanation:

Answer:

166,600J

Explanation:

Kinetic energy (K.E), which is the energy due to motion of a body, can be calculated by using the formula;

K.E = 1/2 × m × v²

Where;

K.E = kinetic energy (joules)

m = mass of body (kg)

v = speed or velocity (m/s)

According to this question, the mass of the roller coaster is 833.0 kg while its velocity/speed is 20.0m/s.

K.E = 1/2 × 833 × 20²

K.E = 1/2 × 833 × 400

K.E = 1/2 × 333200

K.E = 166,600

Therefore, the kinetic energy of the roller coaster car is 166,600J.

Answer:

a. KCl

Explanation:

a. KCl - made of 2 elements

b. NH4Cl

c. KClO3

d. NH4ClO3

Answer:

A!!!!!!!!

Explanation:

Answer:

[Kr] 4d² 5s² option b will be correct answer

Answer:

this equation is not proper see that where is the reactant.

Explanation:

give give a proper question and I will

if fecl2 + c2 gives a fecl3 where does the carbon compound go

Answer:

2FeCl2 + Cl2 → 2FeCl3

Explanation:

Correct question is;

Resistance of a given wire is obtained by measuring the current flowing in it and the voltage difference applied across it. If the percentage errors in the measurement of the current and the voltage difference are 3% each, then error in the value of resistance of the wire is?

Answer:

6%

Explanation:

From ohms law, we know that;

R = V/I

Where;

R is resistance

V is voltage

I is current

Now, the percentage error in the resistance is given by the formula;

ΔR/R = ΔV/V+ ΔI/I

We are told that the current and the voltage difference have a percentage error of 3% each. Thus;

ΔR/R = 3% + 3% = 6%

Explanation:

In chemistry, a solution is a special type of homogeneous mixture composed of two or more substances. In such a mixture, a solute is a substance dissolved in another substance, known as a solvent. ... The term "aqueous solution" is used when one of the solvents is water.

Answer:

A. He sent a cathode ray between electrically charged metal plates