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
poizon [28]
3 years ago
7

Some forms of vitamin D, C₂₈H₄₄O, can be found in red meat. How many total atoms are in 5 molecules of C₂₈H₄₄O

Chemistry
1 answer:
MaRussiya [10]3 years ago
7 0

Answer:

3.01 × 10^24 atoms of vitamin D

Explanation:

The number of atoms, molecules or ions present in a substance is given by the Avogadro's number which is 6.02 × 10^23.

Hence;

1 molecule of vitamin D contains 6.02 ×10^23 atoms

5 molecules of vitamin D contains 5 × 6.02 ×10^23/1

= 3.01 × 10^24 atoms of vitamin D

You might be interested in
Which of the following human activities can cause eutrophication of lakes?
Lana71 [14]

Answer: 1) Adding fertilizers to soil

Explanation: Eutrophication is the presence of excess mineral and nutrients in water bodies which result into increased plant and algal growth.

Fertilizers containing nitrogen and phosphorus are used to make soil more fertile in farming.  The overuse of fertilizers can cause these nutrients to runoff the farmer's fields and enter water bodies, thus leading to eutrophication.

7 0
4 years ago
Some states authorize a to make healthcare decisions ------- for patients who can't make them because they're incapacitated. O a
Tom [10]

Explanation:

A student flips four different coins at the same time. Which choice shows all of the possibilities for the results of the coin toss? (H = heads, T = tails)

A HH, TT, HT, TH

B HHHT, HTTT, HHTT

C HHH, TTT, HTH, HTT

D HHHH, HTHH, HTTH, HTTT, TTTT

7 0
3 years ago
The behavior of light can be modeled as _______.
777dan777 [17]

Answer:

c

Explanation:

4 0
3 years ago
The average atomic mass of Eu is 151.96 amu. There are only two naturally occurring isotopes of europium, Eu with a mass of 151.
earnstyle [38]

Answer:

The percentage abundance of Eu isotopes are 52 %  and 48 % .

Explanation:

The formula for the calculation of the average atomic mass is:

Average\ atomic\ mass=(\frac {\%\ of\ the\ first\ isotope}{100}\times {Mass\ of\ the\ first\ isotope})+(\frac {\%\ of\ the\ second\ isotope}{100}\times {Mass\ of\ the\ second\ isotope})

Given that:

Since the element has only 2 isotopes, so the let the percentage of first be x and the second is 100 -x.

For first isotope,:

% = x %

Mass = 151.0 amu

For second isotope :

% = 100  - x  

Mass = 153.0 amu

Given, Average Mass = 151.96 amu

Thus,

151.96=\frac{x}{100}\times {151.0}+\frac{100-x}{100}\times {153.0}

Solving for x, we get that:

x = 52 %

<u>Thus percentage abundance of Eu isotopes are 52 %  and 48 % .</u>

7 0
3 years ago
PLEASE HELP ME ASAP!!!
garik1379 [7]
I think unbalanced? not sure sorry
3 0
3 years ago
Read 2 more answers
Other questions:
  • Need help with question
    9·1 answer
  • What is the mass/volume percent concentration of 2.75g of K2SO2 dissloved in 350.0 ml of solution
    9·1 answer
  • Which liquid has the highest vapor pressure
    13·1 answer
  • Which element has a larger atomic radius than sulfur?
    8·1 answer
  • 2. Which of the following are reactants of photosynthesis? *
    5·2 answers
  • HURRYYYYY!!!!<br> If you have 9 moles of chlorine gas, how many atoms of chlorine do you have?
    8·1 answer
  • Which is one characteristic of deep ocean currents someone pls help
    6·2 answers
  • Someone took the last cookie from the cookie jar last night. The last person to leave the scene is the culprit. Who was it? High
    12·1 answer
  • Why does the earth experience seasons?
    6·1 answer
  • A gem has a mass of 5. 50 g. When the gem is placed in a graduated cylinder containing 9. 500 ml of water, the water level rises
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!