Chemistry High School

in order to decrease the freezing point of 500. g of water to 1.00° c how many grams of ethylene glycol (C2H602)must be added (KF=1.86°C kg solvent)

Answers

Answer 1

Answer:

if wrong sorry ok????

In Order To Decrease The Freezing Point Of 500. G Of Water To 1.00 C How Many Grams Of Ethylene Glycol

Related Questions

which chloride is a coloured solid rtp

Answers

Answer:

sodium chloride

hope that helped :)

Answer:

Chlorine is a greenish yellow gas at room temperature and atmospheric pressure. ... yielding chlorine water, and from this solution a solid hydrate of ideal ...

Write the relation of M3 with its multiples

Answers

Explanation:

HI friends good morning

what is the most appropriate unit to measure the following; the length of a football field. b) the diameter of a tennis ball

Answers

Explanation:

a) m (metre)

b) mm (millimeter)

9. During an experiment the students prepared three mixtures A)Starch in water B) Sodium chloride solution C) Tincture of Iodine. i) Students observed a visible beam of light through mixture A. Why? ii) Tincture of lodTe did not show Tyndall effect. Explain reason. ill) How can you relate particle size to Tyndall effect?

Answers

Answer:

See explanation

Explanation:

Tyndall effect refers to the scattering of light in a solution. Tyndall effect occurs when the size of particles in the solution exceeds 1 nm in diameter. Such solutions are actually called false solutions.

In tincture of iodine, the size of particles in solution is less than 1 nm in diameter hence the solution does not exhibit Tyndall effect. Hence, tincture of iodine is a true solution.

Therefore, if the size of particles in solution exceeded 1nm in diameter, Tyndall effect is observed.

The number of joules required to heat one gram of a substance one degree Celsius is _____.

endothermic

temperature

exothermic

specific heat capacity

Answers

The answer is D - specific heat capacity.

In a hospital, bags of saline solution are used to rehydrate patients. They are made by dissolving a specific amount of salt in water. What is the solvent in the saline solution?

A. Bag
B. Patient
C. Saline
D. Water

Answers

D. Water

The solvent is the liquid that the solute (salt) is dissolved in.

Water is the solvent in the saline solution. Hence, option D is correct.

What is the solute?

A solute is something being dissolved, a solvent is a thing dissolving the item, and the solution is the mixture of the two items.

In a hospital, bags of saline solution are used to rehydrate patients. They are made by dissolving a specific amount of salt in water. Water is the solvent in the saline solution.

Hence, option D is correct.

Learn more about the solution here:

https://brainly.com/question/7932885

#SPJ5

1 atm is equal to
O 1 mmHg
• 14.7 mmHg
• 76 mmHg
© 760 mmHg

Answers

Answer:

C 760 mm of hg

because this is the atmospheric pressure at sea level

How many atoms of hydrogen are there in 36 g of NH4?

Answers

Answer:

hope it helps you

Explanation:

please like and mark me brainlist

The formula mass of ammonia is 14 + 1 3 = 17. The number of moles in 36 g ammonia is 36/ 17 = 2.11mol. A mole is 6.02 10, so the number of hydrogen atoms in a 2.11 moles of ammonia is 2.11 *6.02*10^23 = 1.27 *10^24 atoms .

Hope it helps!

PLZ HELP ME Which of the following is the process by which chloroplasts use carbon dioxide, water, and sunlight to produce sugars and oxygen?
A. Photosynthesis
B. Cellular respiration
c. Reproduction
D. Homeostasis

Answers

Answer:

Explanation:

The answer is Photosynthesis

the text of oxygen gas in the laboratory

Answers

Explanation:in testing for oxygen a glowing splint is used.

the glowing splint is brought in the presence of the test tube containing the gas

the glowing splint rekindles or lights up showing that oxygen is present.

this is a positive test because oxygen supports burning or combustion

Using your answers from part C, complete the chemical formula of each compound. If the number of ions is 1, leave that
number out of the formula.
Drag each number to the correct location. Numbers may be used more than once

Answers

Answer:

1;1, 2;1, 3;1, 1;2, 1;1, 3;2, 1;3, 2;3, 1;1.

I hope this will help.

Answer:

This is what the answer looks like

Explanation:

PLZ HELP ME WITH MY WORK
What is a compound?
A substance that is made from two different metals
B. A substance that cannot be broken into simpler substances
C. A substance that is made using a chemical reaction
D. A substance that can be separated by physical means

Answers

Answer:

Explanation:

Answer A is incorrect because a compound doesn't have to be made with only metals.

Answer B is incorrect because that is actually the definition of a pure element.

Answer C is correct because to make a compound, there has to be a chemical reaction where bonds are formed and an entirely new substance is created.

Answer D is incorrect because compounds cannot be separated by physical means.

Hope this helps :D

A sample of gas has a volume of 20 cm³.The pressure is changed to 90 kPa at constant temperature,while the volume increases to 75 cm³.What was the original pressure of the gas?

Answers

Answer:

337.5kPa ~ 338kPa

Explanation:

Using the ideal gas law PV=nRT we have the following definitions from the problem:

V(initial) = 20cm³

P(initial) = ?kPa

V(final) = 75cm³

P(final) = 90kPa

Since we know that the number of moles of the sample did not change, nor did the temperature, nor does the ideal gas constant (R) we can rewrite this equation to state:

P(initial)V(initial) = nRT =P(final)V(final) ~ P(initial)V(initial) = P(final)V(final)

Rearranging this equation as we are solving for the initial pressure we find that:

P(initial) = (P(final)V(final))/V(initial)

P(initial) = ((90kPa)(75cm³))/20cm³

P(initial) = 337.5kPa ~ 338kPA

Which sentence describes existing cells?

All cells, once formed, continue to live forever.

All cells come from previously existing cells.

All the cells that are on Earth have always been here.

All cells develop from the remains of other cells.

Answers

Hdhzhhw bzJijw d diaiwor

I believe it would be the second one

What is the chemical formula for carbon tetrafluoride?
The Periodic Table
1
mono-
2
di-
3
4
tetra-
5
penta-
hexa-
6
7
hepta-
8
Oct-
9
nano-
10
deca-

Answers

the chemical formula for carbon tetrafluoride is CF4 because carbon has a charge of -4 and fluorine has a charge of -1 so to balance the ions, you must balance the charges.

A sample of gas occupies 1.2 L at 12.0oC. Assuming pressure remains the same, what would be the volume (in L) of this gas at 67oC?

A.
1.4

B.
1.0

C.
0.2

D.
5.0

E.
6.7

Answers

Answer:

6.7

hope it help

Other Questions

find the quotient 1/5 / (-5/7) = Determine the sum of the first 33 terms of the following series:52+(46)+(40)+... Which of the following would be considered anthropogenic impacts on the natural environment?a. air pollutionb. introduction of invasive speciesc. burning of fossil fuelsd. all of the above The ratio of Mitchell's age to Connor's age is 8:5. In thirty years, the ratio of their ages will be 6:5. How much older is Mitchell than Connor now? The majority of immigrants that entered the United States during the industrial age came from if the ordered pairs (x-2,3y+1) and (y+1,x+3) are equal,find x and yplz help me If 1100 square centimeters of material is available to make a box with a square base and an open top, find the largest possible volume of the box. Round to two decimal places if necessary. Why Was The necessity of getting a constitution fromlated by a popularly elected constitution assembly felt after the second popular movement 2062 / 63 ? list the reasons. Independent PracticeWhich model is most appropriate for the set of points?(2, 5), (1, 1), (0, 3), (1, 1), (2, 5)A.exponentialB.linearC.quadratic When neuroscientists employ the term "nucleus", they are usually referring to:_____.a. a cluster of glial cells in the dorsal-medial CNS.b. a neural unit composed of anatomically and functionally related neurons.c. a group of homologous ganglia located either in the cortex or in the cerebellum.d. cognitively synchronized clusters of apical dendrites anywhere in the PNS. Ilang litro ng tubig ang kailangang isalin sa timba na naglalaman ng 10 000 mililitro The population of a city is currently 45,000 and is declining at a rate of 2% each year. Give a formula for determining the total population after a period of t years.Question 4 options:A) A = (45,000)e0.02tB) A = 45,000 + e0.02tC) A = (45,000)e0.02tD) A = 45,000 + e0.02t If x+y=8 and xy =15 find the value of x+y. Eun Sun is a young and enthusiastic intern in a law firm and puts a lot of effort into her work. Her boss, however, never appreciates her work; he rather increases her workload every time she submits something for his approval. Though she is quite content with the nature of the work and the pay, Eun Sun is personally discontent with the work culture. On the basis of these factors, which of the following is most likely true of Eun Sun?-Eun Sun lacks intrinsic motivation.-Eun Sun lacks perceived organizational support.-Eun Sun lacks extrinsic motivation.-Eun Sun lacks both intrinsic and organizational support. According to the ESRT, the rate of temperature increases below the Earth's surface is greatest between depths of What is the approximate length of arc s on the circle below? Use 3.14 for Pi. Round your answer to the nearest tenth.-5.8 ft-6.3 ft-27.5 ft-69.1 ft Find all three distinct roots for X =1. (two of them are complex mumber). And show that sum of all roots is zero. To calculate the volume of a chemical produced in a day a chemical manufacturing company uses the following formula below:[tex]V(x)=[C_1(x)+C_2(x)](H(x))[/tex]where represents the number of units produced. This means two chemicals are added together to make a new chemical and the resulting chemical is multiplied by the expression for the holding container with respect to the number of units produced. The equations for the two chemicals added together with respect to the number of unit produced are given below:[tex]C_1(x)=\frac{x}{x+1} , C_2(x)=\frac{2}{x-3}[/tex]The equation for the holding container with respect to the number of unit produced is given below:[tex]H(x)=\frac{x^3-9x}{x}[/tex]a. What rational expression do you get when you combine the two chemicals?b. What is the simplified equation of ?c. What would the volume be if 50, 100, or 1000 units are produced in a day?d. The company needs a volume of 3000 How many units would need to be produced in a day? Answer these questions correctly5) There ____ to be ____ reasons for changing our plans.(a) appear; fewer(b) appears; no (c) appears; a few(d) appear; several6) The chart shows ____ of people who visited the gallery ____ day.(a) a number; every(b) number; each(c) the number; each(d) numbers; every7) The number of passengers carried each year ____ gradually.(a) have risen(b) has raised(c) have grown(d) has risen8) The car ____ stolen while ____ in an isolated place.(a) is; being parked(b) was; parking(c) has been; parked(d) was; parked9) I ____ until the game began.(a) neednt wait(b) shouldnt wait(c) oughtnt to wait(d) neednt have waited10) Everyone likes it here ____ used to it.(a) when he gets(b) when she gets(c) once you get(d) once they get Write a couple sentences about how you got your drivers license and how it felt for your autobiography essay. (About 5 sentences will do)