How many atoms are present in 3.500 mol of NH3? NEED ANSWER ASAP

Answers

Answer 1

Answer: I’m pretty sure it’s c I’m so sorry if you get it wrong

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With #27. if you can do at least two and explain how

THANK YOU

Answers

KOH - Potassium hydroxide (The compound for potassium is K, hence the first part, and OH is for hydroxide so when you put them together it makes potassium hydroxide.. pretty self explanatory)
Ca(NO3)2 - Calcium nitrate (The symbol for calcium is Ca, next is NO which is nitrate and the 3 means that there are 3 Nitrate compounds..I am not 100% sure what the 2 means at the end, but I am guessing it means that there are 2 calcium nitrate compounds in all.)
MgCO3 - Magnesium carbonate
Na3PO4 -Trisodium phosphate
LiNO3 - Lithium Nitrate
Mg(C2H3O2)2 - Magnesium acetate

Alright, so to do this, you need to know the name of the elements and compounds, since all of these are ionic compounds which have different naming rules than covalent compounds, all you need is a periodic table and an ion chart. I'll do the first column.

A. Calcium Nitrate

B. Potassium Hydroxide

C. Magnesium Carbonate.

I also am including a picture of an ion chart that include almost all of the ions to help you with the rest of them.

What does the molecular formula of a compound describe?

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Answer: Molecular Formulas. Molecular formulas are a compact chemical notation that describe the type and number of atoms in a single molecule of a compound. Identify the molecular formula of a compound given either its name or structural formula.

Explanation:

What are the coefficients that will balance the equation below?NaOH + AICI:
NaCl + Al(OH)3

1, 1, 1,3
1, 3, 1,3
3, 1, 3, 1
1, 3, 3, 1

Answers

Answer:

3, 1, 3, 1 is a required answer.

1,000convert in to scientific notation

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1*10^3
It’s easier to think of it this way- the number of zeros will be the exponent

Answer: 1 x $10^3$

Explanation: You can see that the only non-zero digit is 1, so it is 1 x $10^x$ 1,000 has 3 zeroes to the left of the period, so it is1x $10^3$ . Quite simple!

10.0 grams of a gas occupies 12.5 liters at a pressure of 42.0 mm Hg. What is the volume when the pressure has increased to 75.0 mm Hg? 0.143 L 6.72 L 7.00 L 22.3 L

Answers

To solve this we assume that the gas is an ideal gas. Then, we can use the ideal gas equation which is expressed as PV = nRT. At a constant temperature and number of moles of the gas the product of PV is equal to some constant. At another set of condition of temperature, the constant is still the same. Calculations are as follows:

P1V1 =P2V2

V2 = P1 x V1 / P2

V2 = 42.0 x 12.5 / 75.0

V2 = 7.0 L

Answer:

7.00 L

Explanation:

The only thing that varies between the two situations is pressure and volume.

we have the ideal gas equation

$PV=nrT$

We know that n = moles of substance remain constant, also the temperature and n corresponding to the ideal gas constant

Situation N1

$P_1= 42.0 mmHg\nV_1= 12.5 L \nP_1V_1=nrT$

Situation N2

$P_2= 75mmHg\nV_2= ?\nP_2V_2=nrT$

As nrT are equal both times, therefore we can match this term in both equations

$Ecuation N1\nP_1V_1=nrT\nEcuation N2\n P_2V_2=nrT\n$

We equate both equations

$P_2V_2=P_1V_1\nV_2=(P_1V_1)/(P_2)$

$V_2=(42mmHg.12.5 L)/(75.0 mmHg) \nV_2= 7.00L$

True or False, A Bronsted-Lowry acid is a proton acceptor, while a Bronsted-Lowry base is a proton donor.

Answers

This statement is false. A Bronsted-Lowry acid is a proton DONOR and the Bronsted-Lowry base is a proton ACCEPTOR, Based on the Bronsted-Lowry definition, acids and bases are being classified whether they can donate or accept and proton. Bronsted-Lowry acid is a PROTON DONOR because it donates a proton to H2O and for the Bronsted-Lowry base, it basically accepts a proton from acids such as HCl.

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