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
jeka57 [31]
3 years ago
9

Help please help thank you

Chemistry
1 answer:
givi [52]3 years ago
3 0

Answer:

the first one

Explanation:

You might be interested in
Bacteria have a nucleus but no nuclear membrane *<br><br> True<br> False
serious [3.7K]

Answer:

T

Explanation:

Bacteria are prokaryotic cells. They do not have a nuclear membrane and chloroplast is also absent. In photosynthetic bacteria, there are lamellae called thylakoids which contain enzymes and bacterial chlorophyll necessary for photosynthesis.

7 0
3 years ago
Please Help!!<br> Qns 1b to 3
Gelneren [198K]

Answer: Ammonium, when heated with aqueous base, will give off NH3 (ammonia) gas, (and depending, water vapor). This will leave the Cr2O3(s). From then on,

it is just adding or subtraction of gases or water vapor. You probably heard “Loss of electrons is Oxidation”, “Gain of Electrons is reduction”. That should help.

Explanation: This isn’t an explanation but an interesting point; Acid-Base and RedOx reactions are useful to the most complex of any Chemistry. Get this down, and Organic Chemistry will be much easier.

7 0
3 years ago
if a gas has an initial pressure of 24,650 pa and an initial volume of 376 ml, what is the final volume if the pressure of the g
NNADVOKAT [17]

If a gas has an initial pressure of 24,650 pa and an initial volume of 376 ml, then the final volume would be 11,943.8144 ml if the pressure of the gas is changed to 775 torr assuming that the amount and the temperature of the gas remain constant.

It is given that the initial pressure P₁ is 24,650Pa and initial volumeV₁ is 376ml and the final pressureP₂ is 775 torr. We need to find the final volume of the gas. The final volume could be found using the following formula:

P₁V₁ = P₂V₂

By substituting the values, we get

24650 x 376 = 776 x V₂

9268400 = 776V₂

V₂ = 9268400/776

V₂ = 11,943.8144 ml

Therefore, the final volume of the gas would be 11,943.8144 ml

To know more about Partial pressure, click below:

brainly.com/question/14119417

#SPJ4

5 0
11 months ago
How did Henry Moseley revise Mendeleev's periodic table? (Please answer A.S.A.P.)
CaHeK987 [17]
<span>If you give it a good search, the most used answer would probably be as follows,

</span><span>In 1914 Henry Moseley found a relationship between an element's X-ray wavelength and its atomic number (Z), and therefore rearranged the table by nuclear charge / atomic number rather than atomic weight. Before this discovery, atomic numbers were just sequential numbers based on an element's atomic weight. Moseley's discovery showed that atomic numbers had an experimentally measurable basis.
</span>
Hope this helps!
5 0
3 years ago
Read 2 more answers
What is the answer for chemestry when it says 1.204 times 10^24
Sphinxa [80]

Answer: This is called moles

Explanation:  This is described to be the number of molecules, atoms or ions in a substance :)

6 0
3 years ago
Other questions:
  • Which phrase defines an aquifer? A. the total amount of precipitation that falls on an area in a year B. the network of streams
    7·2 answers
  • Which 1 m solution would have the highest vapor pressure at a given temperature? view available hint(s) which 1 solution would h
    13·2 answers
  • Yosef is playing with different kinds of rubber bands. Some are very narrow and some are quite wide. Yosef is curious about the
    6·2 answers
  • Heat flows fromsubstances
    13·2 answers
  • The black-footed ferret is a highly specialized predator that depends on prairie dogs for survival. Prairie dogs make up more th
    12·1 answer
  • Use the crossover method to find the chemical formula of a calcium oxide
    9·1 answer
  • if 15.8 grams of sodium react with excess water, how many liters of hydrogen gas can be produced at 303 Kelvin at 1.30 atmospher
    11·1 answer
  • Explain what lattice energy is and how it affects
    9·1 answer
  • Define the terms Genotype and Phenotype.
    11·2 answers
  • What is the pattern in the periodic table for valence electrons and orbital shells of an element?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!