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
kati45 [8]
3 years ago
5

PLEASE HELP I BEG

Chemistry
1 answer:
Gwar [14]3 years ago
5 0

Answer:

1.Velocity and pitch

2.The unit of vibration is hertz. The number of oscillations of an oscillating body per second is known as frequency. Complete step by step answer: The time taken by a vibrating body to complete one vibration is time period.

3.Frequencies above 20,000 Hz are known as ultrasound.

You might be interested in
The charge of the stable ion of S and Li?
balandron [24]

Answer:

sulfur will have a chafge of -2 and Lithium will have a charge of +1

3 0
4 years ago
An -ite or -ate ending on the name of a compound indicates that the compound:
ololo11 [35]

Explanation:

I'm not sure what it is

4 0
3 years ago
How do the amino acids lysine and alanine combine to form a dipeptide?
rewona [7]
A dipeptide is formed by the process of dehydration synthesis, which in this case allows two amino acids to come together and form a larger molecule plus water.
7 0
3 years ago
(100 POINTS) Write the chemical formula of the ionic compound magnesium chlorate. The magnesium (Mg) ion has a +2 charge. Chlora
antoniya [11.8K]

Answer:

A

Explanation:

since Mg has a charge of +2 and ClO3 has a charge of 1-, you need 2 ClO3 to cancel out the +2 since 2 ClO3 ions would have a 2- charge

6 0
3 years ago
Argon (Ar) and helium (He) are initially in separate compartments of a container at 25°C. The
love history [14]

Answer:

(a) V_B=11.68L

(b) x_{He}=0.533

Explanation:

Hello,

In this case, since the both gases behave ideally, with the given information we can compute the moles of He in A:

n_A=\frac{0.082\frac{atm*L}{mol*K}*298K}{1.974 atm*6.00L}=2.063mol

Thus, since the final pressure is 3.60 bar, we can write:

P=x_{Ar}P_A+x_{He}P_B\\\\P=\frac{n_{Ar}}{n_{Ar}+n_{He}} P_A+\frac{n_{He}}{n_{Ar}+n_{He}} P_B\\\\3.60bar=\frac{2.063mol}{2.063mol+n_{He}} *2.00bar+\frac{n_{He}}{2.063mol+n_{He}} *5.00bar

The moles of helium could be computed via solver as:

n_{He}=2.358mol

Or algebraically:

3.60bar=\frac{1}{2.063mol+n_{He}} *(4.0126+5.00*n_{He})\\\\7.314+3.60n_{He}=4.013+5.00*n_{He}\\\\7.314-4.013=5.00*n_{He}-3.60n_{He}\\\\n_{He}=\frac{3.3}{1.4}=2.358mol

In such a way, the volume of the compartment B is:

V_B=\frac{n_{He}RT}{P_B}=\frac{2.358mol*0.082\frac{atm*L}{mol*K}*298.15K}{4.935atm}\\  \\V_B=11.68L

Finally, he mole fraction of He is:

x_{He}=\frac{2.358}{2.358+2.063}\\ \\x_{He}=0.533

Regards.

8 0
3 years ago
Other questions:
  • 1. Mountains are most likely formed
    10·1 answer
  • When heated solid silver oxide decomposes into its elements
    12·1 answer
  • The temperature at which a liquid becomes a solid is the:
    12·2 answers
  • A state of equilibrium can exist when a piece of copper metal is placed in a solution of copper(ii) sulfate. outline the charact
    12·1 answer
  • What is the volume of .04 mol of a gas at .9 kPa and 20 degrees celsius
    11·1 answer
  • Write on the blanks the number of significant figures each number has.
    14·1 answer
  • What is the name of the ionic compound RbCI
    10·1 answer
  • Which piece of technology allowed scientists to look for life on Mars? a telescope a rover a microscope probeware
    10·2 answers
  • 21 III
    12·2 answers
  • Somone PLZZZ BELP ME asappp
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!