1answer.
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
Sliva [168]
3 years ago
15

a helium balloon has a volume of 2.95 liters at 25 c. the volume of the ballon decreased to 2.25 l after it is placed outside on

a cold day. what is the outside temperature in c?
Chemistry
1 answer:
OleMash [197]3 years ago
3 0

Answer:

The outside temperature is -45.8°C

Explanation:

When a gas keeps on constant its moles and its pressure, we can assume that volume will be increased or decreased as the T° (absolute T° in K).

V1 / T1 = V2 / T2

2.95L/298K = 2.25L / T2

(2.95L/298K ) . T2 = 2.25L

T2 = 2.25L . 298K / 2.95L

T2 = 227.2K

T°K - 273 = T°C

227.2K - 273 = -45.8°C

You might be interested in
A chemist performs the same tests on two homogeneous white crystalline solids, A and B. The results are shown in the table below
Nookie1986 [14]

Solid A contains only Covalent bonds and solid B only contains Ionic bonds. I know this because the appearance, solubility, and conductivity of solid A describes Covalent bonds.

Explanation:

Try this, but idk if it will be marked as correct.

7 0
3 years ago
Give the name and symbol of your favorite element and explain why it your favorite element.​
Salsk061 [2.6K]

Answer:

The most important elements that we use in everyday life include carbon, hydrogen, oxygen, with smaller amounts of things like chlorine, sulfur, calcium, iron, phosphorus,nitrogen, sodium, and potassium. Apart from these, other elements include magnesium, zinc, neon, and helium are also in our daily existence.

all these element are my favourite element .......

6 0
2 years ago
Most common energy source in cellular respiration
topjm [15]

Answer: cytoplasm

Explanation:

7 0
3 years ago
Read 2 more answers
Why do atoms always contain the same number of electrons and protons?
katovenus [111]

Answer:

An electron is a negatively charged subatomic particle and a proton is a positively charged subatomic particle. Positive charge(s) attract negative charge(s) and vice versa. The proton and neutron stay together and attract one another to give the atom an overall charge of zero (neutral). Which is the charge of an atom. When there is an unequal number of protons and neutrons an ion is formed. If the number of protons are more than the electron, a positively charged ion called cation is formed. On the other hand, if the number of electrons are more than the protons a negatively charged ion called anion is formed.

8 0
3 years ago
Read 2 more answers
What happens to temperature and kinetic energy of particles during a change of state
Wittaler [7]
When a substance is changing state, its temperature remains constant. This is because energy is used to increase/decrease kinetic energy of the molecules of the substance, increasing/decreasing the inter-molecular distance and overcoming the energy bonds present between the molecules. Therefore, no energy is used to raise the temperature of the substance and therefore it remains constant
3 0
3 years ago
Other questions:
  • The method used by Joseph Priestley to obtain oxygen made use of the thermal decomposition of mercuric oxide given below. What v
    12·1 answer
  • what is the volume occupied by 0.118 mol of helium gas at a pressure of 1.05 atm and a temperature of 322 K?
    12·1 answer
  • If you take energy away from oxygen, will it turn into water? If not, then what will turn into water if you take away energy fro
    6·1 answer
  • Which shows an electron being ejected from the atom? explain your reasoning?
    10·1 answer
  • Which of the following illustrations show atoms of the same element? (Yellow=electrons, red=protons, gray=neutrons).
    14·1 answer
  • Each axis on a graph should be:<br> equal<br> O numbered<br> Olabeled<br> vertical
    8·1 answer
  • Scoring Scheme: 3-3-2-1 Use one of your experimentally determined values of k, the activation energy you determined, and the Arr
    12·1 answer
  • 8. Consider the following reaction, for which ΔG° = −21.7 kJ/mol at 25°C: A2B(g) ↔ 2 A(g) + B(g) At the moment that 0.10 mol A2B
    7·1 answer
  • A main group element with the valence electron configuration 3s23p1 is in periodic group __________. It forms a monatomic ion wi
    5·1 answer
  • A gaseous product of a reaction is collected at 280K and 0.95 atm. Given R=0.0821L⋅atmmol⋅K, what is the molar mass of the gas,
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!