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
Sveta_85 [38]
3 years ago
12

Someone help me please. It's due in 30 mins

Chemistry
1 answer:
max2010maxim [7]3 years ago
8 0

Answer: permanent removal of hair by energy or heat

Explanation:

You might be interested in
A sample of argon gas at 55°C is under 845 mm Hg pressure. What will the new temperature be if the pressure is raised to 1050 mm
Maurinko [17]

Answer:

The final temperature at 1050 mmHg is 134.57 ^{\circ}C or 407.57 Kelvin.

Explanation:

Initial temperature = T = 55^{\circ}C = 328 K

Initial pressure = P = 845 mmHg

Assuming final  to be temperature to be T' Kelvin

Final Pressure = P' = 1050 mmHg  

The final temperature is obtained by following relation at constant volume

\displaystyle \frac{P}{P'}=\displaystyle \frac{T}{T'} \\ \displaystyle \frac{845 \textrm{ mmHg}}{1050 \textrm{ mmHg}} = \displaystyle \frac{328 \textrm{ K}}{T'} \\T' = 407.57 \textrm{ Kelvin}

The final temperature is 407.57 K

7 0
3 years ago
Define the terms heredity and inherited in your own words.
adelina 88 [10]

Answer:

Heredity is when you have gotten either physical or mental traits from your parents.

Inherited in Biology: Getting traits from your parents

Inherited outside Biology: is the practice of passing on private property, titles, debts, privileges, rights, and obligations upon the death of an individual.

Explanation:

3 0
3 years ago
State the postulate of Bohr theory
KengaRu [80]

Answer:

Bohr's model of the hydrogen atom is based on three postulates:

1) An electron moves around the nucleus in a circular orbit,

2) An electron's angular momentum in the orbit is quantised,

3) The change in an electron's energy as it makes a quantum jump from one orbit to another is always accompanied by the emission or absorption of a photon. Bohr's model is semi-classical because it combines the classical concept of electron orbit (postulate 1) with the new concept of quantisation ( postulates 2 and ).

4 0
3 years ago
Antoine Lavoisier burned metals in sealed jars. What is your prediction of his experimental results?
Aliun [14]

Answer:

The mass of the jar and contents remained the same after the metal was burned.

Explanation:

My prediction about the experimental results is that  the mass of the jar and contents remained the same after the metal was burned in the jar.

This is compliance with the law of conservation of mass which states that in a chemical reaction, matter is neither created nor destroyed by bonds are rearranged for new compounds to form.

  • In compliance with this law, it is expected that the mass of the jar and its content will remain the same before and after the reaction.
  • No new material was added and no material was removed from the jar.
8 0
3 years ago
A good way to organize and record your results and observations is
Zielflug [23.3K]
It is a graph. It shows observations and then you record your results with any of the graph types.
5 0
3 years ago
Other questions:
  • A glass of water contains 1.2 x 1024 molecules of water. An additional 4.0 moles of water are poured into the glass. How many mo
    15·1 answer
  • Will give you know what to first correct answer
    7·1 answer
  • Note that butane has two possible isomers but that decane has 75 possible isomers. Why does the number of possible isomers go up
    6·1 answer
  • What ion charge patterns are in the periodic table
    7·1 answer
  • Identify this reaction
    8·1 answer
  • The titration of a 20.0-mLmL sample of an H2SO4H2SO4 solution of unknown concentration requires 22.87 mLmL of a 0.158 M KOHM KOH
    12·1 answer
  • The equation shows neutralization of an acid and a base to produce a salt and water
    5·1 answer
  • If the same index fossils are found in different rock strate miles apart, what is probably true about the rock layers?
    12·1 answer
  • Calcium carbonate decomposes at high temperatures to give calcium oxide and carbon
    14·1 answer
  • T or F? Potential energy is limited to electromagnetic, mechanical, and nuclear energy.
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!