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
Mekhanik [1.2K]
3 years ago
13

Which statement is true?

Chemistry
1 answer:
Elena-2011 [213]3 years ago
4 0
The letter only has reflection symmetry, if you rotated it it would look the same.
You might be interested in
A gaseous mixture at 265K and 1.0 atm contains 25 O2 60 N2 and 15 CO2 mole basis The velocities of the components are 0.084 cm s
Free_Kalibri [48]

Answer:

The molar average velocity is 0.0588 cm/s

The N₂ diffusion velocity relative to the mole average velocity is -0.1428 cm/s

The molar diffusional flux of N₂ is -3.9x10⁻³

Explanation:

Given data:

T = temperature = 265 K

O₂ = 25%

N₂ = 60%

CO₂ = 15%

vO₂ = -0.084 cm/s

vN₂ = 0.12 cm/s

vCO₂ = 0.052 cm/s

The molar average velocity is equal:

v_{av} =(0.25*(-0.084))+(0.6*0.12)+(0.15*0.052)=0.0588cm/s

The N₂ diffusion velocity relative to the molar average velocity is:

v_{i} -v_{av} =-0.084-0.0588=-0.1428cm/s

The molar diffusional flux of N₂ is:

N_{N_{2} } =\frac{P}{RT} y_{A} (v_{i} -v_{av} )=-3.9x10^{-3}

8 0
3 years ago
How are chemical bonds important in metabolism?
mixas84 [53]
Chemical bonds are broken to supply us with energy. Without bonds, and our ability to break them, the food we eat would not supply us with energy.
8 0
3 years ago
Describe the structure of our galaxy, including its spiral arms.
gulaghasi [49]

Answer:

Most spiral galaxies consist of a flat, rotating disk containing stars, gas and dust, and a central concentration of stars known as the bulge. ... The spiral arms are sites of ongoing star formation and are brighter than the surrounding disc because of the young, hot OB stars that inhabit them.

Explanation:

6 0
3 years ago
Read 2 more answers
What is the epicenter?
hoa [83]

Answer:

basically the middle of an earthquake

5 0
3 years ago
A sample of hydrated copper (II) sulfate (CuSO4•nH2O) is heated to 150°C and produces 103.74 g anhydrous copper (II) sulfate and
wariber [46]

Answer:

5

Explanation:

Firstly, we convert what we have to percentage compositions.

There are two parts in the molecule, the sulphate part and the water part.

The percentage compositions is as follows:

Sulphate- (103.74)/(103.74 + 58.55) × 100% = apprx 64%

The water part = 100 - 64 = 36%

Now, we divide the percentages by the molar masses.

For the CuSO4 molar mass is 64 + 32 + 4(16) = 160g/mol

For the H2O = 2(1) + 16 = 18g/mol

Now we divide the percentages by these masses

Sulphate = 64/160 = 0.4

Water = 36/18 = 2

The ratio is thus 0.4:2 = 1:5

Hence, there are 5 water molecules.

3 0
3 years ago
Other questions:
  • 14 g of sugar is dissolved in 100 mL of water. What is the mass of the new system?
    15·1 answer
  • Write the condensed ground-state electron configurations of these transition metal ions, and state which are paramagnetic:
    12·1 answer
  • Identify the structure of a compound of molecular formula C4H8O2 that gives the following 1H NMR data: 0.95 (triplet, 3 H), 1.65
    15·1 answer
  • What does 2,3-dibromopentane look like?
    13·1 answer
  • Calculate the number of moles in 4.22x1022 molecules of H,O
    14·1 answer
  • 1. Calculate the mass (in grams) of 3.8 moles of the following:
    5·1 answer
  • Explain what happens during a solar eclipse
    14·2 answers
  • Please help due in 5 min.
    8·1 answer
  • What is the process in which matter changes from the liquid to the solid state?
    8·2 answers
  • Write correctly a balanced equation for the following "word" equation: Red lead → lead monoxide + oxygen​
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!