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
HACTEHA [7]
2 years ago
5

What are all included in the immune response? A) T-cells B) lymphocytes C) B-cells D) stem cells E) oil

Chemistry
2 answers:
sergij07 [2.7K]2 years ago
8 0

Answer: In the immune responds B,D are correct

Explanation:

I know this because i already learned it

Nitella [24]2 years ago
5 0

Answer:

B and D

Explanation:

You might be interested in
5. A penny weighs about 2.5 g. How many moles of pennies would be required to equal the mass of the moon (7.3x10^24 kg)
schepotkina [342]

5. 1.16 x 10^{26} moles  moles of pennies would be required to equal the mass of the moon.

6. 12.86 moles of ethanol are in a 750 ml bottle of vodka.

Explanation:

5 .Data given:

mass of penny = 2.5 grams

atomic mass of penny = 62.93 grams/mole

moles present in mass of the moon given as = 7.3 x 10^{24} kg

number of moles = \frac{mass}{atomic mass of  1 mole}

number of moles = \frac{2.5}{62.93}

0.039 moles of penny is present in 2.5 grams

0.039 moles of penny in 2.5 grams of it

so, x moles in 7.3 X 10^{27}  grams

\frac{0.039}{2.5} =\frac{x}{7.3 X 10^{27} }

x = 1.16 x 10^{26} moles

so when the mass of the penny given is equal to the mass of moon, number of moles of penny present is 1.1 x 10^{26} .

6.

Given:

vodka = 40% ethanol

volume of vodka bottle = 750 ml

moles of ethanol =?

density of ethanol =0.79 g/ml

atomic mass of ethanol = 46.07 grams/mole

so, from the density of ethanol given we can calculate how much ethanol is present in the solution.

density = \frac{mass}{volume}

density x volume = mass

0.79 x 750 = 592.5 grams

number of moles = \frac{mass}{atomic mass of 1 mole}

number of moles of ethanol = \frac{592.5}{46.07}

                                               = 12.86 moles of ethanol

6 0
3 years ago
which type of chemical bond would be formed between two elements having electron configuration of 1s2 2s2 2p6 3s2 and 1s2 2s2 2p
OLga [1]
The electron configuration
1
s
2
2
s
2
2
p
6
3
s
2
3
p
2
is the element Silicon.
The key to deciphering this is to look at the last bit of information of the electron configuration
3
p
2
.
The '3' informs us that the element is in the 3rd Energy Level or row of the periodic table. The 'p' tells us that the element is found in the p-block which are all of the Groups to the right of the transition metals, columns 13-18. The superscript '2' tells us that the element is found in the 2nd column of the p-block Group 14.
7 0
3 years ago
Khalad is measuring the amplitude of a wave. What can be known about this wave?
lorasvet [3.4K]
B.It is a transverse wave
6 0
3 years ago
Read 2 more answers
Why was alchemy so confusing?​
galina1969 [7]
Search Results
Featured snippet from the web
Alchemy is extremely complicated. It is based on the practical skills of early metal workers and craftsmen, on Greek philosophy, and on Eastern mystic cults that sprang up in the first centuries after Christ and influenced so much of magic and occult thought.
8 0
3 years ago
A sample of gas occupies 10.0 l at 100.0 torr and 27.0
disa [49]
The pressure  of a sample  of a gas if the temperature  is changed  to 127  c  while  the volume  remains  constant   is calculated  using gay lussac law formula

that is P1/T1 = P2/V2
P1 = 100 torr
T1 = 27+273 = 300 k
T2 =127 +273 =400 k
P2=?

by  making P2 the subject of the formula
P2=T2P1/T1

=100  x 400/300 = 133.3 torr

5 0
3 years ago
Other questions:
  • 3. Give three examples of how microorganisms might demonstrate the characteristics of life
    12·2 answers
  • What are some non examples of biodiversity
    8·2 answers
  • Which of the following solutions will behave closest to an ideal solution?
    9·1 answer
  • I don’t understand how to find these please help
    13·1 answer
  • Volume of 100ml. it’s density is 0.15g/ml. what is its mass?
    9·2 answers
  • Calculate the number of C atoms in 11g of carbon dioxide
    7·1 answer
  • Help !!! what is the answer ?!?!
    5·1 answer
  • An Arrhenius bad is a
    5·1 answer
  • The table shows the boiling points of fluorine, chlorine and bromine.
    5·2 answers
  • Which member of each pair is more soluble in water? Why?<br> (a) CH₃CH₂OCH₂CH₃(l) or CH₃CH₂OCH₂(g)
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!