Please help me!!!!!!!!! :-]

12.9 grams of Cl are in a 38.0-g sample of the chlorofluorocarbon C2F3Cl3.

Chlorofluorocarbon is defined as a gas that was previously widely employed in many items (like aerosols), but is thought to harm the ozone layer in the Earth's atmosphere. Halogen exchange using chlorinated methane's and ethane's as the starting point often produces CFCs and HCFCs. The chlorofluorocarbons undergo free-radical reactions to produce the brominated derivatives, which replace C-H bonds with C-Br bonds.

1 Carbon + 3 Fluorine + 1 Chlorine = CF3Cl

1 × (12.011 g/mol) plus 3 x (18.988 g/mol) + [1 x 35.453 g/mol] 104.428 grams per mole

1 mole per 104.428 grams of 38.0 grams equals 0.364 moles. 0.364% CF3Cl moles 1 mole of Cl and 1 mole of CFCl3 in CF3Cl equals 0.364 moles of Cl.

Chlorine weighs 35.453 grams per mole, so 12.9 grams of chlorine are contained in every 38.0 grams of CF3Cl.

Thus, 12.9 grams of Cl are in a 38.0-g sample of the chlorofluorocarbon C2F3Cl3.

To learn more about chlorofluorocarbon, refer to the link below:

https://brainly.com/question/12061103

#SPJ6

The percentage of CO2 increased 48 percent. Hope this helped!

Answer:

0.0736 M or 10.4 g/L

Explanation:

First we convert 4.550 g of Na₂SO₄ into moles, using the molar mass of Na₂SO₄:

Then we calculate the final volume of the solution:

Now we can proceed to calculate the concentration -in molarity- of the solution:

In g/L the concentration would be:

Answer: NH3 has a higher solubility rate than SbH3 because it has much stronger bonds. ... HoCH2CH2OH because it can form two bonds with water compared to the other molecule which can only form one.

HOPE THIS HELPS

Answer:

Is a nonrenewable resource

Explanation:

"The fuel for fusion reactors can be drawn from sea water in an almost unlimited supply. The fuel for fission, on the other hand, comes from a limited supply of uranium. Once it is depleted, it cannot be easily replenished. For this reason, nuclear power is considered a nonrenewable resource."

I got this source from ODY

Hope I could help! :)

Have a nice day

Answer:

is a nonrenewable resource

Explanation:

Answer:

the answer is true :)

Answer:c

Explanation:

Answer:

[tex]\color{Blue}\huge\boxed{Answer} [/tex]

The body regulates those levels in an example of homeostasis. When levels decrease, the parathyroid releases hormones. If calcium levels become too high, the thyroid helps out by fixing calcium in the bones and lowering blood calcium levels. The nervous system helps keep homeostasis in breathing patterns.

Answer:

Mecury almagamated zinc

Answer:

Explanation:90% of people marry there 7th grade love. since u have read this, u will be told good news tonight. if u don't pass this on nine comments your worst week starts now this isn't fake. apparently if u copy and paste this on ten comments in the next ten minutes you will have the best day of your life tomorrow. you will either get kissed or asked out in the next 53 minutes someone will say i love u this is irrelevent but idrc lol

Answer:

0.287 M

Explanation:

Multiply the concentration of each solution by the volume of each (in liters) to get the moles of NaOH in that solution.

0.15 M • 5.4000 L = 0.81 mol NaOH

4.0 M • 0.2012 L = 0.80 mol NaOH

Add the mol of NaOH together to get the total --> 0.81 + 0.80 = 1.61 mol NaOH

Divide by the total volume of solution (5400.0 mL + 201.2 mL = 5,601.2 mL = 5.6012 L)

1.61 mol / 5.6012 L = 0.287 M NaOH

Answer:

answer is c

Explanation:

hope it helps!!!

Answer:

False

Please rate brainliest

Answer:

sunlight, water, carbon dioxide, soil, are the basics which you also have phosphorus and nitrogen

Answer:

2.00 M KOH

Explanation:

Divide moles by volume and make sure your volume is in LITERS, not mL.

0.0400 mol KOH / 0.0200 L = 2.00 M KOH

A sample of 0.0400 mol potassium hydroxide, KOH was dissolved in water to yield 20.0 ml of solution. The molarity of the solution is 2.00 M KOH.

Molarity is the measure of the concentration of any solute in per unit volume of the solution.

[tex]M = \dfrac{n}{V}[/tex]

Given, the 0.0400 mol potassium hydroxide

20.0 ml volume

Putting the values in the equation

[tex]\dfrac{0.0400 mol }{ 0.0200 ml} = 2 M[/tex]

Thus, the molarity of the solution is 2.00 M KOH.

Learn more about molarity

https://brainly.com/question/2817451

#SPJ2

Answer:

Explanation:

3Pb(ii)(NO3)2 + 2Fe(iii) ( C2H3O2 )3   ===> 3Pb( C2H3O2)2 + 2Fe(NO3)3

I know you have likely been given this as a homework assignment, but in real life I doubt you would be able to see any reaction taking place. The products are likely both soluble and both ionize, so I don't think you will get any kind of reaction taking place.

The equation however is balanced.

Answer:

0.629 atm

Explanation:

P1V1 = P2V2

P1 = 0.986 atm

V1 = 10.2 L

P2 = ?

V2 = 16.0 L

Solve for P2 --> P2 = P1V1/V2

P2 = (0.986 atm)(10.2 L) / (16.0 L) = 0.629 atm

Answer:b

Explanation: the particles will soon dissolve which means that the particles are changing but the volume is staying the same and the concentration is changing

The  identification of the variables which  is correct is that the number of solute particles is being changed between the two solutions, but the volume and concentration of the solution is being held constant.

Variables are defined as any characteristics, number or quantity which can be measured . It can also be called as a data item . It is called as variable because they can vary and can have variety of values.

There are three types of variables 1) manipulated variable where in a condition is specified, 2) responding variable which is dependent on manipulated variable 3)controlled variable which do not change.

Example of manipulated variables are number of hours spent by a student studying , that of responding variable is result of a student and temperature is an example of controlled variable.

Learn more about variables,here:

https://brainly.com/question/17344045

#SPJ3

Answer:

I believe it is scenario 4

Explanation:

Answer:

check below

Explanation:

c) Concentrated sulphuric acid is used a drying agent.

d) (use any one of them) Concentrated phosphoric acid, hot aluminium oxide, calcium chloride , anhydrous calcium sulphate

Answer:

12c) it is used as a drying agent

d) anhydrous calcium chloride

calcium oxide can also be used as a drying agent

Answer:

0.00331M

Explanation:

Molarity of a solution can be calculated as follows:

Molarity = number of moles (n) ÷ volume (V)

In the information provided in this question, the volume = 502mL = 502/1000 = 0.502L, mass of caffeine = 0.322g

Molar mass of caffeine (C8H10N4O2), where C = 12, H = 1, N = 14, O = 16 is as follows:

Molar mass = 12(8) + 1(10) + 14(4) + 16(2)

= 96 + 10 + 56 + 32

= 194g/mol

Using, moles = mass/molar mass

moles = 0.322/194

moles = 1.66 × 10-³ moles

mole = 0.00166mol

Molarity = number of moles ÷ volume

Molarity = 0.00166mol ÷ 0.502L

Molarity = 0.00331M.

Answer:

Mass of sodium metal is 130.87 gram

Explanation:

The complete reaction is

2 NaN3 --> 2 Na + 3 N2

We know that PV = nRT

n = [tex]\frac{PV}{RT}[/tex]

On substituting the given values, we get

[tex]n = \frac{\frac{99707}{101325}*75 }{0.082 *(273.15 +15)} \\n = 3.02[/tex]moles of N2

Sodium azide's molar mass

3.02 *(2/3) = 2.013 moles

Mass = 2.03 * 65.01 = 130.87 gram

Answer:

i.e. mass of 1 mole of glucose, C6H12O6 = (6 × 12.01 + 12 × 1.01 + 6 × 16.00) g = 180.18 g (using atomic weight data to 2 decimals) 1 mole of carbon atoms weighs 12.01 g and there are 6 moles of C atoms in 1 mole of glucose, so the mass of carbon in 1 mole of glucose = 6 × 12.01 g = 72.06 g.

Answer:

Sodium chloride is added to the ice to lower the freezing point of the ice. Large crystals dissolve more slowly than small crystals. This allows time for the ice cream to freeze more evenly.

Explanation:

The answer is It is NH3.....

Answer:

the answer for this one is the distance the car is driven

Answer: Picture

Explanation: I got it right

Answer:

2 and 3 look like a cold front in front of 1.

Explanation:

3 is an occluded front which occurs when a cold air mass devours a warm air mass and then collides with another cold mass. 2 is a warm air mass, and 1 is a cold air mass.

Answer: chemical element

Explanation: A chemical element is a substance that contains only one type of atom, which is the smallest particle of an element.