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
Zanzabum
3 years ago
15

HELP ASAP PLZZZZZZZZ

Chemistry
1 answer:
mash [69]3 years ago
8 0

Answer:

ans : C

..............

You might be interested in
What are the benefits and drawbacks to having a pouring temperature that is much higher than the metal’s melting temperature?
Mashcka [7]

Answer:

The main advantage would be that with the pouring temperature being much higher, there is very little chance that the metal will solidify in the mould while busy pouring. This will allow for moulds that are quite intricate to still be fully filled. The drawbacks, though, include an increased chance defects forming which relates to shrinkage (cold shots, shrinkage pores, etc). Another drawback includes entrained air being present, due to the viscosity of the metal being low because of the high pouring temperature.

3 0
3 years ago
The pH of a vinegar solution is 4.15. What is the H+ concentration of the solution
marishachu [46]
<span>The pH of a vinegar solution is 4.15. To find the H+ concentration of the solution use the following equation -log(H+)=pH. Insert the pH into the equation to get, -log(H+) = 4.15 Rearrange the equation to get, 10^(-4.15) = H+ Finally, you can solve for H+. The hydrogen ion concentration of the vinegar solution is .0000708 M.</span>
3 0
3 years ago
Read 2 more answers
Atom A has five protons, four neutrons, and five electrons. Atom
Anna35 [415]

Answer:

they are the same element because they have the same number of protons and electrons,but a different number of neutrons

6 0
3 years ago
Which phrase describes radiation?
vesna_86 [32]

Answer:

the process in which energy is emitted by one object, transmitted through space, and absorbed by another

Explanation:

Radiation is energy that comes from a source and travels through space and may be able to penetrate various materials. Light, radio, and microwaves are

types of radiation that are called nonionizing.

8 0
3 years ago
Pls helpits rlly hard
victus00 [196]

Answer:

5: 0.16

6: 50

Explanation:

Question 5:

We can use the equation density = mass/ volume.

We already have the mass (12g), but now we need to find the volume of the cylinder.

The equation for this is πr²h

So we know the radius is 2 and the height is 6.

π x (2)² x 6 = 24π = 75.398cm³

Now we can use the density equation above:

12/75.398 = 0.1592g/cm³ = 0.16g/cm³.

Question 6:

This time, we have to rearrange the equation density = mass/ volume to find the mass.

We know mass = density x volume.

From the question, the density is 2.5g/mL and the volume is 20mL.

Following the equation above, we do 2.5 x 20 to get 50g.

5 0
3 years ago
Other questions:
  • Which pair of elements would form an ionic bond?
    9·2 answers
  • Please help! I’m begging youuuuuuuuuuuuuuu
    5·1 answer
  • Assuming all gas is removed from the tank when filling balloons, how many 0.75 L balloons can be filled from a tank that contain
    14·2 answers
  • What happens to the copper sulphate crystals when they are heated that causes them to change color?​
    15·1 answer
  • Which of the following is an example of the conversion of kinetic energy into gravitational potential energy?
    8·1 answer
  • How many moles of C8H18 contain 9.25 × 1024 molecules of C8H18 ?
    9·1 answer
  • If a sample of gas is at 672 °C and 3.9 atm, what is the new temperature at 12.2 atm?
    15·1 answer
  • What's the IUPAC name pf this compound? CH3-CH-CH2-CH-CHO | | CH3 CL
    14·1 answer
  • What is an atomic mass unti
    10·2 answers
  • Which one of these molecules can be a reactant in a friedel-crafts reaction? a) aniline b) benzenesulfonic acid c) chloroethene
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!