answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
notsponge [240]
2 years ago
8

A balloon with a volume of 5.0 L at a pressure of 94.2 kPa expands until its volume doubles. What is the new pressure of the gas

in the balloon?
Chemistry
1 answer:
Ronch [10]2 years ago
7 0

Answer:

Pressure = 47.1kPa

Explanation:

V1 = 5.0L

P1 = 94.2kPa = 94.2*10³Pa

V2 = 2V1 = 2 * 5.0 = 10L

P2 = ?

To solve this question, we'll have to use Boyle's law which states that the volume of a fixed mass of gas is inversely proportional to its pressure provided that temperature remains constant

Mathematically,

V = k/P, k = PV

P1V1 = P2V2 = P3V3=........=PnVn

P1V1 = P2V2

Solve for P2

P2 = (P1 * V1) / V2

P2 = (94.2*10³ * 5.0) / 10

P2 = 47100Pa

P2 = 47.1kPa

The new pressure of the gas is 47.1kPa

You might be interested in
Sodium acetate spontaneously crystallizes out of a supersaturated solution upon standing or upon the addition of a seed crystal.
AlekseyPX

Answer:

Option (c) is correct.

Explanation:

According to 2nd law of thermodynamics, every spontaneous process is associated with increase in entropy (\Delta S>0).

As sodium acetate crystallizes out spontaneously therefore it is associated with \Delta S>0.

During crystallization, bond formation takes place which results evolution of heat. In other words, crystallization phenomenon is exothermic (\Delta H).

So, the given crystallization process renders the following thermodynamic quantities- \Delta S>0 J/K and \Delta H J

Option (c) is correct.

6 0
2 years ago
Obtain a box of breakfast cereal and read the list of ingredients. What are four chemicals from the list
FromTheMoon [43]

Options:

monoglycerides

cocamide DEA

folic acid

iron chromium ion

peroxide

lauryl glucoside

disodium phosphate

Answer and Explanation:

The added chemicals are:

  • monoglycerides
  • folic acid
  • iron
  • disodium phophates

Monoglycerides are fats added for flavour. Folic cid and iron are vitamins added for nutritional value. disodium phosphate is a food additive for enhancing flavour.

The remaining ingredients are organic based.

3 0
2 years ago
Examine the block from the periodic table for the element nitrogen, chemical symbol N. Using your knowledge of the periodic tabl
vodka [1.7K]
I believe that the answer is A) All Nitrogen atoms have 7 protons
4 0
2 years ago
Read 2 more answers
How many acidic protons are there in 0.6137 g of KHP?
andreyandreev [35.5K]

0.6137 g of KHP contains 1.086 × 10^21 acidic protons.

Number of moles of KHP = mass of KHP/molar mass of KHP

Molar mass of KHP = 204.22 g/mol

Mass of KHP = 0.6137 g

Number of moles of KHP = 0.6137 g/204.22 g/mol = 0.003 moles of KHP

Now,  1 each molecule of KHP contains 1 acidic proton.

For 0.003 moles of KHP there are; 0.003 × 1 × NA

Where NA is Avogadro's number.

So;  0.003 moles of KHP contains 0.003 × 1 × 6.02 × 10^23

= 1.086 × 10^21 acidic protons.

Learn more: brainly.com/question/16672114

7 0
2 years ago
A compound that is composed of carbon, hydrogen, and oxygen contains 70.6% C, 5.9% H, and 23.5% O by mass. The molecular weight
zhannawk [14.2K]

Answer: The molecular formula will be C_8H_8O_2

Explanation:

If percentage are given then we are taking total mass is 100 grams.

So, the mass of each element is equal to the percentage given.

Mass of C= 70.6 g

Mass of H = 5.9 g

Mass of O = 23.5 g

Step 1 : convert given masses into moles.

Moles of C =\frac{\text{ given mass of C}}{\text{ molar mass of C}}= \frac{70.6g}{12g/mole}=5.9moles

Moles of H =\frac{\text{ given mass of H}}{\text{ molar mass of H}}= \frac{5.9g}{1g/mole}=5.9moles

Moles of O =\frac{\text{ given mass of O}}{\text{ molar mass of O}}= \frac{23.5g}{16g/mole}=1.5moles

Step 2 : For the mole ratio, divide each value of moles by the smallest number of moles calculated.

For C = \frac{5.9}{1.5}=4

For H = \frac{5.9}{1.5}=4

For O =\frac{1.5}{1.5}=1

The ratio of C : H: O= 4: 4:1

Hence the empirical formula is C_4H_4O

The empirical weight of C_4H_4O = 4(12)+4(1)+1(16)= 68g.

The molecular weight = 136 g/mole

Now we have to calculate the molecular formula.

n=\frac{\text{Molecular weight }}{\text{Equivalent weight}}=\frac{136}{68}=2

The molecular formula will be=2\times C_4H_4O=C_8H_8O_2

4 0
2 years ago
Other questions:
  • Henri becquerel and the curies found out that _____.
    12·2 answers
  • Which of these is a base? a-vinegar b-ammonia c-HCl d- HNO3
    5·2 answers
  • The number of sp2 hybrid orbitals on the carbon atom in CO32– is
    9·2 answers
  • The percent by mass of copper in CuBr2 is Use mc004-1.jpg. 28.45%. 44.30%. 63.55%. 71.55%.
    12·2 answers
  • If a large marshmallow has a volume of 2.50 i n 3 and density of 0.242 g/c m 3 , how much would it weigh in grams? 1 i n 3 =16.3
    7·1 answer
  • Dinitrogen monoxide or laughing gas (N2O) is used as a dental anesthetic and as an aerosol propellant. How many moles of N2O are
    6·1 answer
  • If the kinetic energy of a particle is equal to twice its rest mass, what is the velocity of the particle? Determine if relativi
    6·1 answer
  • A piece of iron metal is heated to 155 degrees C and placed into a calorimeter that contains 50.0 mL of water at 18.7 degrees C.
    8·2 answers
  • Crude oil is a mixture of many compounds that can be separated using which process​
    8·1 answer
  • 1. What are small-scale techniques in chemistry? <br>​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!