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
lianna [129]
3 years ago
7

someone pls help me with my chemistry test plsss my teacher changes the questions so I can't search them up. its 21 questions so

I have to upload multiple posts but look at my account to get the rest pls.

Chemistry
1 answer:
tiny-mole [99]3 years ago
5 0

Answer:l                                          

Explanation:

You might be interested in
A 2.50-l volume of hydrogen measured at â196 °c is warmed to 100 °c. calculate the volume of the gas at the higher temperature
ivann1987 [24]

To solve this we assume that the hydrogen gas is an ideal gas. Then, we can use the ideal gas equation which is expressed as PV = nRT. At a constant pressure and number of moles of the gas the ratio T/V is equal to some constant. At another set of condition of temperature, the constant is still the same. Calculations are as follows:

T1 / V1 = T2 / V2

V2 = T2 x V1 / T1

V2 = (100 + 273.15) K x 2.50 L / (-196 + 273.15) K

<span>V2 = 12.09 L</span>

Therefore, the volume would increase to 12.09 L as the temperature is increased to 100 degrees Celsius.

<span />
5 0
4 years ago
What is the enclosure act
VashaNatasha [74]
The Inclosure Acts, which use an old or formal spelling of the word now usually spelt "enclosure", cover enclosure of open fields and common land in England and Wales, creating legal property rights to land previously held in common.
4 0
3 years ago
If a molecule has an empirical formula of C2H2O and a molecular mass of 84.0 g/mol, what is the molecular formula?
lord [1]

Answer:

=C₄H₄O₂

Explanation:

Given the empirical formula of a molecule, the he the quotient of the molecular mas and and the empirical mass=constant.

84.0 g/mol/mass of(C₂H₂O)=constant

=84/(12×2+1×2×16)

=84/42

=2

Therefore, the molecular formula is (C₂H₂O)₂=C₄H₄O₂

6 0
3 years ago
Read 2 more answers
T<br> What type of bond is formed between the two nitrogen atoms in diatomic nitrogen, N2?
romanna [79]

Nitrogen is a diatomic molecule in the VA family on the periodic table. Nitrogen has five valence electrons, so it needs three more valence electrons to complete its octet. A nitrogen atom can fill its octet by sharing three electrons with another nitrogen atom, forming three covalent bonds, a so-called triple bond.

I'm frosty da showman

8 0
3 years ago
Which type of heat island is
icang [17]

Answer:

a fast moving heat island

Explanation:

cause there is a high amount of heating molecule produced.

3 0
2 years ago
Other questions:
  • How many moles are in 15 grams of calcium
    5·2 answers
  • What is the total number of atoms in a molecule of CH3OH?<br> one<br> three<br> four<br> six
    5·2 answers
  • Q # 6 which of the following equations has correct formulas and also is a balanced equation?
    15·1 answer
  • A scientific law
    14·1 answer
  • The decomposition of H2O2 is first order in H2O2 and the rate constant for this reaction is 1.63 x 10-4 s-1. How long will it ta
    7·1 answer
  • At a temperature of -33.0 degrees C, a sample of confined gas exerts a pressure of 53.3 kPa. If volume remains constant, at what
    15·1 answer
  • How do chemist control the speed of explosions?
    7·1 answer
  • Use the drop-down menus to complete the statement and describe how energy relates to work.
    6·2 answers
  • Calculate how many grams would be required to prepare 600. 0 ml of 0. 150 m of naf? molar mass of naf is 41. 9 g/mo
    5·1 answer
  • A chemist can determine the mass of K in a sample of known mass that consists of either pure K2O or pure K2O2. From this informa
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!