8.00x1019 molecules HCN to grams

Answers

Answer 1

Answer:

g HCN = MW HCN g/mole HCN * [8.00E19 molecules/6.022E23 molecules/mole HCN] = ??

EmForm = CaxPy

moles Ca = 0.66g / atwt Ca g/mole = ??

moles P = (1.00-0.66)g / atwt P g/mole = ??

x/y = moles Ca / moles P = ?? (express as ratio of two numbers; if both are not intergers multiply each by the same number that make them integers. This ratio gives the empirical formula.

Ca3P2

Plug and SOLVE

Related Questions

Which arrow would most likely represent the phase change that occurs when silver is poured into a mold and cools to become a solid bar?

Answers

Answer:

Explanation:

took test edge 2020

D. 5

got it correct on test <3

Calculate the mass of 120cc of nitrogen gas at ntp.How many number of molecules are present in it.Easy step of mole concept

Answers

Explanation:

The formula of nitrogen gas is given as;

N₂

Given volume of the gas = 120cm³

Now,

We need to find the number of molecules and the mass of this compound

Solution:

At STP;

1 mole of gas occupies a volume of 1dm³ ;

1000cm³ = 1dm³

120cm³ gives 0.12dm³;

Now;

1dm ³ of gas contains 1 mole of substance at STP

0.12dm³ will contain 0.12mole of nitrogen gas at STP

Mass of N₂ gas = number of moles x molar mass of N₂

Molar mass of N₂ = 2(14) = 28g/mol

Mass of N₂ = 0.12 x 28 = 3.36g

1 mole of a substance contains 6.02 x 10²³ molecules

0.12 mole of N₂ will contain 0.12 x 6.02 x 10²³ = 7.22 x 10²²molecules

WHY IS A CREEP(creep as the science def) HARD TO DETECT ?( please need help to answer this question!!)

Answers

Answer:

Creep is the imperceptibly slow, steady, downward movement of slope-forming soil or rock. Movement is caused by shear stress sufficient to produce permanent deformation, but too small to produce shear failure. ... Continuous, where shear stress continuously exceeds the strength of the material.

Explanation:

what is magnesium? why does your body need it? how much do you need (per day)? What happens if you have too much or too little of it? Which foods do you find in it? What are some facts about magnesium?

Answers

Magnesium is a nutrient that the body needs to stay healthy. if you dont get enough magnesium in your body then you could get magnesium deficiency. Symptoms of magnesium deficiency include loss of appetite, nausea, vomiting, fatigue, and weakness. Extreme magnesium deficiency can cause numbness, tingling, muscle cramps, seizures, personality changes, and an abnormal heart rhythm. The RDA for magnesium is 310–420 mg for adults depending on age and gender. Sources of magnesium are greens, nuts, seeds, dry beans, whole grains and low-fat dairy products.

random facts:

A magnesium ion is present in the chlorophyll molecule of every living green plant.

Magnesium is critically important for the human metabolic system's functioning.

2 C6H12O2 + 6 O2 -

C =

H =

O =

Answers

Answer:

Explanation:

2 C6H12O2 + 6 O2 -

C = 12

H = 24

O = 16

Can someone help me with this, I feel so sleepy right now :(

Answers

Answer:

I AM SLEEPY TOO WILL HELP TOMMOROW!

Explanation:

How did you get the light to shine? in science

Answers

Answer:

by using a lemon as a circuit and two positive and negative wires

ILL GIVE BRAINLIST IF YOU GET IT RIGHT Which of the following is an example of gravitational potential energy?

Question 9 options:

A battery powering a radio

A flag waving in the wind

A glass jar sitting on a shelf

A ball rolling along a sidewalk

Answers

A glass jar sitting on a shelf.

If the shelf gets tipped the jar will slide off and convert to kinetic energy as gravity pulls it to land on the next level/floor

what is diffusion and what is osmosis ?

Answers

Answer:

diffusion is the movement of gases from a higher concentration area to a lower concentration area

osmosis is the movement of water molecules from a higher concentration area to a lower concentration area

Diffusion is the movement of a substance from an area of high concentration to an area of low concentration.

The movement of water molecules through a selectively permeable membrane from a region of high water concentration to low water concentration is called osmosis

What would the name be for Lead (Pb) and Phosphorus (P) bonded together?

Answers

Answer:

Lead Phosphate

Explanation:

what is the amount of matter in an object.

A mass
B volume
C Density

Answers

Mass mass mass mass mass mass

Answer:

Option A

Explanation:

The answer is "mass" or option A. It's not option B because volume is the amount of space in a object which is not what the question is asking for. It's also not option C because density goes hand in hand with volume measuring how much space a object takes up, and also density is mass per volume. Leaving only option A, therefore it is your answer.

Hope this helps.

Which molecule contains only single covalent bonds?
A CL
B CO2
C CN2
D 02

Answers

CO2 i think if you understand so mark me as brainliest please.

Answer:

Explanation:

Chemistry - Solutions

Reading a Periodic TableUsing Dimensional AnalysisMolarity = moles of solute / liters of solution

Explanation:

Step 1: Define

0.500 L

2.50 M NaOH

x moles of solute

Step 2: Define conversions

Molar Mass of Na - 22.99 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of H - 1.01 g/mol

Molar Mass of NaOH - 22.99 + 16.00 + 1.01 = 40 g/mol

Step 3: Find moles of solute

2.50 M NaOH = x moles NaOH / 0.500 L

x = 1.25 moles NaOH

Step 4: Convert

[tex]1.25 \ mol \ NaOH(\frac{40 \ g \ NaOH}{1 \ mol \ NaOH} )[/tex] = 50 g NaOH

Step 5: Check

We are given 3 sig figs. Since our final answer has 2 sigs, there is no need to round.

14. How do mushrooms create their
own microclimates?

Answers

They create their own moisture through evaporation, which is when a liquid turns into a gas. Heat energy is used in this process, leaving the mushrooms cool and moist.

Which traits are polygenic? Select three options.

Answers

Answer:

is there an answier choice u have to choose from or no

Explanation:

Answer:

Hair color

Eye color

Birth weight

Explanation:

Plz help!

It takes a car going 40 mph 3 seconds to come to a stop. What is the acceleration?

Answers

X x. X xxx sxxdcssss
Cw
C
So s
We zx xx

Is the answer -13.3
Because acceleration is change in velocity divided by time

The mass of Carbon is 12 g/mol and the mass of oxygen is 16 g/mol. What is the approximate percent composition by mass of CO2 (formula mass = 44)?
20% carbon and 80% oxygen
23% carbon and 77% oxygen
25% carbon and 75% oxygen
27% carbon and 73% oxygen

Answers

Answer:

the last one

27% by 73%

Explanation:

12/44*100 for C

and

16/44*100 for O

Pure water boils at 100°C.

What happens to the water particles when water boils?

A They gain energy and move further apart.

B They gain energy and stay close together.

CThey lose energy and move further apart.

DThey lose energy and stay close together.

choose one answer correctly!

Answers

C. They lose energy and move further apart

The boiling of pure water has been resulted in the particles gaining energy and moving away from each other. Thus, option A is correct.

The boiling can be described as the conversion of the liquid state to the gaseous state. The molecules in the gaseous space are apart from each other and have no fixed shape.

The pure water has been transferred to the gaseous state at the temperature of 100 degrees celsius. The boiling has been introduced with the addition of the energy.

The water molecules gain energy and start to vibrate. The vibrations have resulted in the change in the change in phase of the liquid with evaporation.

Thus, when pure water boils, the water particles gain energy and move away from each other. Thus option A is correct.

For more information about boiling pure water, refer to the link:

https://brainly.com/question/11372663

What does the size of the atom & their electron structure (called electron configuration) determine?

Answers

Answer:

In atomic physics and quantum chemistry, the electron configuration is the arrangement of electrons in an atom, molecule, or other physical structure (e.g., a crystal). ... The concept is also useful for describing the chemical bonds that hold atoms together.

Explanation:

hope this helps :)

Which action causes breakers?

Answers

Answer:

hope it helps..

Explanation:

C, 0.746 mol Ag.

1 mol Ag = 6.022 x 1023 atoms of Ag -> 4.49 x 1023 atoms of Ag x 1mol Ag/6.022 x 1023 atoms -> 0.746 mol Ag

The moles of Ag that contain 4.49 [tex]\rm \times\;10^2^3[/tex] atoms have been 0.745 moles.

The number of atoms in a mole can be given by the Avagadro number. The Avagadro number has been equal to the number of atoms in a mole of compounds. The Avagadro number has been constant with a value of 6.023 [tex]\rm \times\;10^2^3[/tex].

6.023 [tex]\rm \times\;10^2^3[/tex] atoms = 1 mole

So, for the given 4.49 [tex]\rm \times\;10^2^3[/tex] atoms:

4.49 [tex]\rm \times\;10^2^3[/tex] atoms = [tex]\rm \dfrac{1}{6.023\;\times\;10^2^3}\;\times\;4.49\;\times\;10^2^3[/tex] moles

4.49 [tex]\rm \times\;10^2^3[/tex] atoms = 0.745 moles.

The moles of Ag that contain 4.49 [tex]\rm \times\;10^2^3[/tex] atoms have been 0.745 moles.

For more information about the moles of an atom, refer to the link:

https://brainly.com/question/4783755

According to the picture above, which layer contains :

Answers

Answer:

a) layer 4

b) layer 1

Explanation:

Older the layer=older the fossils

Newer the layer=newer the fossilss

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