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
MrRa [10]
3 years ago
6

Each nucleus of a cell contains:

Chemistry
1 answer:
Jobisdone [24]3 years ago
5 0

Hi there!

<u>Answer</u>:

Genes and chromosomes

Explanation:

All cells contain Genetic information (or Dna) which is organised into structures called chromosomes.

Chlorophyll are basically green pigments in Chloroplasts and both are <u>only</u><u> </u><u> </u><u> </u><u> </u>found in plant cells and not all cells

You might be interested in
A sample from one of Earth's oceans has a salinity of 34. What is the concentration of dissolved salts in this sample of seawate
11Alexandr11 [23.1K]

Answer:

Concentration of dissolved salts = 34,038.76 ppm

Explanation:

Given:

Salinity of ocean water = 34

Find:

Concentration of dissolved salts

Computation:

Salinity of ocean water = 34 g/l

1g/l = 1001.14 ppm

Concentration of dissolved salts = 1001.14 ppm x 34

Concentration of dissolved salts = 34,038.76 ppm

3 0
4 years ago
3) A certain reaction has the following general form: A + B à AB At a particular temperature the concentration versus time were
seropon [69]

Answer:

a. First order.

b. k=3.7x10^{-3}s ^{-1}

c. t_{1/2}=187.3s

d. [A]=0.111M

Explanation:

Hello.

a. In this case since the slope is in s⁻¹ we can infer that the lineal form of the rate law is:

ln[A]=-kt+ln[A]_0

Which is also:

y=mx+b

It means that the reaction is first-order as slope equals the negative of the rate constant which also has units of first-oder reaction.

b. Since the slope is −3.7 x 10−3 s−1 the rate constant is:

k=-m\\\\k=-(-3.7x10^{-3}s ^{-1})\\\\k=3.7x10^{-3}s ^{-1}

c. For first-order reactions, the half-life is:

t_{1/2}=\frac{ln(2)}{k}\\ \\t_{1/2}=\frac{ln(2)}{3.7x10^{-3}s^{-1}}\\\\t_{1/2}=187.3s

d. In this case, since the integrated first-order rate law is:

[A]=[A]_0exp(-kt)

The concentration once 220 seconds have passed is:

[A]=0.250Mexp(-3.7x10^{-3}s^{-1}*220s)\\\\

[A]=0.111M

Regards.

7 0
4 years ago
Do you think precipitation has a greater impact on the rate of chemical weathering or mechanical weathering? Explain
nexus9112 [7]

Greater rainfall has an greater increase on the rate of chemical weathering. Rain is a form of precipitation.

6 0
3 years ago
Which of the following might decrease the amount of water available in an ecosystem?Spilling oil
dolphi86 [110]

Answer:

constructing a dam

Explanation:

dams separate water

3 0
3 years ago
Sea, sand, sky, palms – made almost all of
andrezito [222]

Answer:

sup

Explanation:

3 0
3 years ago
Other questions:
  • How many moles of o are in 15.0 mol fe(no3)3?
    10·2 answers
  • What is the difference between a positive and negative ion?
    7·1 answer
  • Which of the following trophic levels is the highest?
    10·1 answer
  • Three monosulfur fluorides are observed: SF2, SF4, and SF6. Of these, ____ is/are polar.
    12·1 answer
  • hmu ppls ;) im bored u r too just do it free points and so i dont get in trouble wats 276x2458, u dont need to actually answer t
    11·2 answers
  • A ___ reaction takes two or more reactants to make one product
    8·1 answer
  • Wat are representative elements
    11·2 answers
  • How many atoms does 6.022x10^23 formula units if water have
    5·1 answer
  • If you have a gold coin that contains 0.637 moles of gold, how many grams of gold does it contain?
    14·1 answer
  • Please help with this , it’s very important
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!