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
Genrish500 [490]
3 years ago
7

I’m only having a problem with this number that’s all if anyone could help I would really appreciate it! Thank you!

Chemistry
1 answer:
Masja [62]3 years ago
7 0

Answer:D.

Explanation:i used photo math. It is really helpful when I'm doing math homework etc...

You might be interested in
Solutions can be composed of:
Anika [276]

A solution may exist in any phase so your answer is D. any of the above

hope this helps :)

7 0
3 years ago
Why do atoms always contain the same number of electrons and protons?
katovenus [111]

Answer:

An electron is a negatively charged subatomic particle and a proton is a positively charged subatomic particle. Positive charge(s) attract negative charge(s) and vice versa. The proton and neutron stay together and attract one another to give the atom an overall charge of zero (neutral). Which is the charge of an atom. When there is an unequal number of protons and neutrons an ion is formed. If the number of protons are more than the electron, a positively charged ion called cation is formed. On the other hand, if the number of electrons are more than the protons a negatively charged ion called anion is formed.

8 0
3 years ago
Read 2 more answers
a 108ml sampl of gas has a mass of 77.96mg at a pressure of 1140mmhg and temperature of 183°c .what is the molar mass of the gas
madam [21]

Answer:

146.85 g/mol

Explanation:

PV=nRT

n=mass/molar mass

covert from mmhg to atm = 0.184 atm

convert from ml to L= 0.108 L

convert from degree C to K= 456.15 K

convert from mg to g= 0.07796g

then rearrange the formula:

n=PV/RT

=(0.184)(0.108)/(0.08206)(456.15)

n= 5.308*10^(-4)

rearrange the n formula interms of molar mass:

Molar mass= mass/n

=0.07796/(5.308*10^-4)

molar mass= 146.85g/mol

3 0
3 years ago
Read 2 more answers
You wish to add 5 mg/l naocl as cl2 to a solution in a disinfection test, and you have a stock solution (household bleach) that
Alecsey [184]

Answer: -

0.1 ml of bleach should be added to each liter of test solution.

Explanation:-

Let the volume of bleach to be added is B ml.

Density of stock solution = 1.0 g/ml

Mass of stock solution = Volume of stock x density of stock

                                     = B ml x 1.0 g/ml

                                     = B g

Amount of NaOCl in this stock solution = 5% of B g

                                     = \frac{5}{100} x B g

                                     = 0.05 B g

Now each test solution must be added 5 mg/l NaOCl.

Thus each liter of test solution must have 5 mg.

Thus 0.05 B g = 5 mg

                        = 0.005 g

B = \frac{0.005}{0.05}

  = 0.1

Thus 0.1 ml of bleach should be added to each liter of test solution.

4 0
3 years ago
Reproductive cells are created by _____. mitosis meiosis cytokinesis
Alex787 [66]
The correct answer is meiosis. Meiosis is a process where a cell divides into two where these cells contain half of the genetic information from the original cell. Meiosis produces daughter cells containing 50% information from the mother and 50% from the father.
3 0
3 years ago
Read 2 more answers
Other questions:
  • 1.15 g of a metallic element reacts with 300 cm3 of oxygen at 298 K and 1 atm pressure, to form. an oxide which contains O2– ion
    9·1 answer
  • All mixtures can be separated by physical processes. true or false
    5·1 answer
  • A pendulum has 534 J of potential energy at the highest point of its swing. How much kinetic energy will it have at the bottom o
    6·1 answer
  • In examining several amino acids, you want to identify the feature or features that differentiate one amino acid from another. W
    13·2 answers
  • A concept map for four types of intermolecular forces and a certain type of bond is shown.
    11·1 answer
  • When looking across the periodic table from left to right, which is the first group that contains nonmetals?
    8·2 answers
  • If there are 3 moles of hydrogen, 6 moles of oxygen, and 9 moles of helium in a 10 L vessel at 27°C, the total pressure of the g
    10·1 answer
  • Which Of The Following Would Represent An Increase In Entropy
    13·2 answers
  • Energy naturally moves from a heat source to a heat ______.
    11·1 answer
  • Is my answer right? i have a feeling its not correct
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!