Need help with this can some please help

Need Help With This Can Some Please Help

Answers

Answer 1
I believe you would just put a 2 in front of NH3 and keep the other ones as 1

Related Questions

A compound is 39.97% carbon, 13.41% hydrogen, and 46.62% nitrogen. What is the empirical formula?

Answers

Answer:

CH4N

A compound is 39.97% carbon, 13.41% hydrogen, and 46.62% nitrogen.

Explanation:

Hope this helps.

Answer: CH4N is correct

Explanation:

39.97% carbon

13.41% hydrogen

46.62% nitrogen.

State the total number of electrons occupying all the p- orbitals in one atom of chlorine .

Answers

Answer:A chlorine atom in its ground state has a total of seven electrons in orbitals related to the atoms third energy level.

Explanation:

What would be one way to avoid static electricity? А) Dry cotton fabrics and synthetic fabrics separately. B) Run a metal clothes hanger across your dry hair. C Use a blow dryer to dry your hair. D Wear shoes with rubber soles.​

Answers

Answer: The answer would be A.

Explanation:

Answer: B

Explanation:

write the name of the first twenty elements with their symbols and their atomic number​

Answers

Answer:

1 Hydrogen H

2 Helium He

3 Lithium Li

4 Beryllium Be

5 Boron B

6 Carbon C

7 Nitrogen N

8 Oxygen O

9 Fluorine F

10 Neon Ne

11 Sodium Na

12 Magnesium Mg

13 Aluminium Al

14 Silicon Si

15 Phosphorus P

16 Sulfur S

17 Chlorine Cl

18 Argon Ar

19 Potassium K

20. calcium Ca

Answer:

h - hydrogen (1)

he - helium (2)

li - lithium (3)

be - beryllium (4)

b - boron (5)

c - carbon (6)

n - nitrogen (7)

o - oxygen (8)

f - fluorine (9)

ne - neon (10)

na - sodium (11)

mg - magnesium (12)

al- aluminium (13)

si - silicon (14)

p - phosphorus (15)

s - sulfur (16)

cl - chlorine (17)

ar - argon (18)

k - potassium (19)

ca - calcium (20)

What is that Molar mass of ammonium phosphite?

Answers

Answer:

149.09 g/mol GOOD LESSONS

Answer:

The answer is 149.09 g/mol

Explanation:

I hope this helps!!

A rocket will rotate about a single point called the _?

Answers

Answer:

Center of gravity.

Explanation:

The answer is center of gravity

When turgor pressure is high enough in a cell, the cell walls become _____

Answers

Answer:

the answer is "Firm".

Explanation:

What quantity is needed to convert between the moles of a
given sample of a substance and its mass in grams?
a the molar mass of the substance
b the density of the substance
с
the physical state of the substance
d all of the above
Check it

Answers

Answer:

a

the molar mass of the substance

Answer: a

The molar mass of the substance

Explanation:

RIGHT ANWSER WILL BE MARKED BRAINLIEST

Answers

Answer:

11460

Explanation:

how does atomic radius affect coulombic attraction?

Answers

According to Coulomb's Law, as the atomic number increases within a series of atoms, the nuclear attraction for electrons will also increase, thus pulling the electron(s) closer to the nucleus.

Composed of two flat pins or flat holes for the live and neutral wire, commonly found in the household here in the Philippines.
A.)Fuse
B.)circuit breaker
C.)Type A electrical plug or outlet
D.)Type B plug or outlet

Science subject

Answers

Answer:

C.)Type A electrical plug or outlet

Explanation:

Usually, there are two types of plugs or outlets commonly available in most countries. These are the type A and type B plugs or outlets.

The Plug type A or outlet has two flat parallel pins while plug type B or outlet has two flat parallel pins and a grounding pin.

One of these two is the live while the other is the neutral wire. When you connect it to power, current flows from the live to the neutral.

Make
a claim about why cells need ribosomes.
Summarize evidence to support the claim
and explain your reasoning.
ls?

Answers

Cells need ribosomes to make protein.

what happens if the temperature of a system at equilibrium is increased?

Answers

Increasing the temperature decreases the value of the equilibrium constant. ... If you increase the temperature, the position of equilibrium will move in such a way as to reduce the temperature again. It will do that by favouring the reaction which absorbs heat.
There are multiple answers:

1. The relative amount of products at equilibrium increases for an endothermic reaction
2. The relative amount of products at equilibrium decreases for an exothermic reaction
(Extra) If the temperature of a system at equilibrium is decreased

1. The relative amount of products at equilibrium decreases for an endothermic reaction
2. The relative amount of products at equilibrium increases for an exothermic reaction

Hope this helps!

True or False: The only planet that has gravity is the Earth.
O True
False

Help please:)

Answers

Answer:

False.

Explanation:

all planets have gravity because if they didnt, the gasses and whatever makes up the planet wouldnt be pulled down to the core of the planet, and it would just be floating around in space.

2AI + 3H2SO4 -> Al2(SO4)3 + 3H2
How many grams of Al2(SO4)3 would be formed if 250g H2SO4 completely reacted with
aluminum?
2
181.2 g
313.8 g
273.7 g
201.9 g
Please help!!!!!

Answers

Answer:

B. 313.8

Explanation:

Which is an example of an exothermic reaction?

A. the rusting of iron
B. dissolving ammonium chloride in water C. photosynthesis
D. baking bread​

Answers

Answer:

the answer is b

Explanation:

D is the correct answer

In the reaction 2AgI + Na2S → Ag2S +2NaI, calculate the number of moles of AgI needed to react with 85.0 g

Answers

Answer:

8.5gNaI × 1molNaI/78gNaI × 234.7g AgI / 1 MOL AgI × 2Mol Ag I / 1mol Na2S=51.2 g of AgI reacts with Na2 S

Explanation:

conversion factor is used to make sure that all the units cancels with the other units and we only remain with the mass of Ag I which is 51.2g but since the number of moles can be calculated by dividing with the relative molecular mass therefore 51.2g/234.7gmol=0.22mol

Where v stands for __________________________________ and the units are meters per second (m/s).

Answers

Answer:

Velocity

Explanation:

Answer: velocity I’m sure

Explanation:

Which statement is true about molarity and percent by mass? (3 points)

Answers

Molarity is the amount of solute in 1L of solution while percent by mass is the ratio of the mass solute to the mass of solution multiplied by 100. Both quantities are used measure the amount of solute in solution.

What is molarity and percent by mass?

The question is incomplete however, I will try to explain molarity and percent by mass.

The term molarity means the number of moles of a substance is 1 L of solution while the percent by mass is the ratio of the mass solute to the mass of solution multiplied by 100.

Both molarity and percent by mass shows the amount of solute in a solution.

Learn more about molarity: https://brainly.com/question/12127540

Answer:

Both are ratios of the amount of solute over the amount of solution/

Explanation:

took test.

true or false, during a change of state, the thermal energy gained or lost by a material changes the kinetic energy of its particles

Answers

Answer:

true..... not false okkkkk

The statement is true.

what are the energy transformations taking place in your alarm clock

Answers

Answer:

Explanation:

The clock now has potential energy. When the alarm rings, the potential energy is converted into kinetic energy and sound energy.

Alarm clock runs due to the electrical energy. Due to the electric current, the electric motor rotates the blade. It means that the electrical energy is converted into mechanical energy.

The mechanical energy finally generates vibrations which cause sound.    

Thus, energy transformation which takes place in alarm clock will follow the order-

Electrical to mechanical to sound.

Which of the following equations of CH4 + Cl2
-
CCl4+ HCl is balanced?
A. O CH4 + Cl2 - CC14+ HCI
B.
CH4 + Cl2 - CCl4 + 4HCI
С.
CH4 + 4Cl2 - CCl4 + 4HCI
D
CH4 + 2Cl2 - CCl4 +2HCI

Answers

Balanced equation : C. CH₄ + 4Cl₂⇒  CCl₄+ 4HCl

Further explanation  

Equalization of chemical reactions can be done using variables. Steps in equalizing the reaction equation:  

1. gives a coefficient on substances involved in the equation of reaction such as a, b, or c, etc.  

2. make an equation based on the similarity of the number of atoms where the number of atoms = coefficient × index (subscript) between reactant and product  

3. Select the coefficient of the substance with the most complex chemical formula equal to 1  

Reaction

CH₄ + Cl₂⇒  CCl₄+ HCl

Give coefficient :

aCH₄ + bCl₂⇒  CCl₄+ cHCl

Make equation :

C, left=a, right=1⇒a=1

H, left=4a, right=c⇒4a=c⇒4.1=c⇒c=4

Cl, left=2b, right=4+c⇒2b=4+c⇒2b=4+4⇒2b=8⇒b=4

The equation becomes :

CH₄ + 4Cl₂⇒  CCl₄+ 4HCl

Steel has a density of 7.8 g/cm3. What is the volume of a 78-gram piece of steel?

Answers

Answer:

10 cm³

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

[tex]volume = \frac{mass}{density} \\[/tex]

From the question we have

[tex]volume = \frac{78}{7.8} \\ [/tex]

We have the final answer as

10 cm³

Hope this helps you

What do you think it means to "use safe cooking practices?"​

Answers

Using safe cooking practices means taking the proper precautions in the kitchen to avoid accidents and any injuries.

~theLocoCOco

Answer:

to be safe

Explanation:

just follow intructions and watch what u do

Which of the below elements will not likely form an ionic bond?
A.
Cs & O
B.
P & O
C.
Ne & Cl
D.
Li & Mg

Answers

Answer:

B

Explanation:

I think this is right

PLEASE HELP I WILL GIVE BRAINLIEST!!! Its due tonight at 12:00

Answers

Answer:

c

Explanation:

we have only distance vs time graph so c is the right answer that cart is moving with constant speed of 0.5m/s

confirmed

first calculate distance which is from 2 to 5.5

5.5-2=3.5

apply the formula of velocity

v=s/t

v=3.5/7=0.5

Answer:

Answer is C

Explanation:

v= 3.5/7 = 0.5

picture *** pls help

Answers

The volume of Oxygen at STP required : 251.25 L

Further explanation

Conditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure). At STP, Vm is 22.4 liters/mol.

Reaction(combustion) :

2C₂H₂(g)+5O₂(g)⇒4CO₂(g)+2H₂O(g)

mol C₂H₂ :

[tex]\tt \dfrac{100.5}{22.4}=4.49[/tex]

mol ratio C₂H₂ : O₂ = 2 : 5, so mol O₂ :

[tex]\tt \dfrac{5}{2}\times 4.49=11.23[/tex]

volume  O₂ at STP :

[tex]\tt 11.23\times 22.4=251.55~L[/tex]

Or you can use Avogadro's hypothesis :

In the same temperature and pressure, in the same volume conditions, the gas contains the same number of molecules  

So the ratio of gas volume will be equal to the ratio of gas moles  :

[tex]\tt \dfrac{V_1}{V_2}=\dfrac{n_1}{n_2}\\\\\dfrac{100.5}{V_2}=\dfrac{2}{5}\\\\V_2=\dfrac{100.5\times 5}{2}=251.25~L[/tex]

Which ion would represent the ion of an element from Group 2A?
A2+
Y3+
X2-
Z+

Answers

Answer:

A2+

..........

Explanation:

they lose 2 electrons to form an ion

WHATS THE DIFFERENCE BETWEEN MASS AND WEIGHT WELPPPPP

Answers

Answer:

Mass is amount of matter. Weight is how that matter is affected by gravity.

Explanation:

Please answer correctly !!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!

Answers

It’s A or B but liquids take the shape of their container so I bet you it’s B
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