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
Paha777 [63]
3 years ago
11

Name: Date:

Chemistry
1 answer:
n200080 [17]3 years ago
7 0

Answer:

The Answer is B

Explanation:

Because a cell is the small unit of life it is the one that help us.

You might be interested in
When an atom gains or loses electrons and has and does not have an equal number of
aksik [14]

Answer:

it is called an ion

Explanation:

if it gains electrons then it is an anion

if it gains protons it is a cation

typically non metals are anions and metals are cations

4 0
2 years ago
2. How are these nutrients used by your body?
REY [17]

The nutrients that the body breaks down into basic units are carbohydrates, fats, and proteins. From carbohydrates comes glucose, your body's -- especially the brain's -- primary form of fuel; from fats we get glycerol and fatty acids, many of which are essential ingredients in hormones and the protective sheath in our brain that covers communicating neurons; and from proteins we get amino acids, which are the building blocks to lots of structures, including our blood, muscle, skin, organs, antibodies, hair, and fingernails.

Each of these nutrients travels down a different pathway, but all can eventually fuel the body's production of ATP (adenosine triphosphate), which is essentially our bodies' ultimate energy currency.
7 0
3 years ago
What charge does nitrogen form when it satisfies the octet rule?
ExtremeBDS [4]
The answer should be B: -3
3 0
3 years ago
The half life of oxygen is 2 minutes. What fraction of a sample of 0.15 will remain after 5 half lives?​
Natasha_Volkova [10]

Answer:

3.13%.

Explanation:

The following data were obtained from the question:

Original amount (N₀) = 0.15

Half life (t½) = 2 mins

Number of half-life (n) = 5

Fraction of sample remaining =.?

Next, we shall determine the amount remaining (N) after 5 half-life. This can be obtained as follow:

Amount remaining (N) = 1/2ⁿ × original amount (N₀)

NOTE: n is the number of half-life.

N = 1/2ⁿ × N₀

N = 1/2⁵ × 0.15

N = 1/32 × 0.15

N = 0.15/32

N = 4.69×10¯³

Therefore, 4.69×10¯³ is remaining after 5 half-life.

Finally, we shall the fraction of the sample remaining after 5 half-life as follow:

Original amount (N₀) = 0.15

Amount remaining (N) = 4.69×10¯³

Fraction remaining = N/N₀ × 100

Fraction remaining = 4.69×10¯³/0.15 × 100

Fraction remaining = 3.13%

3 0
3 years ago
A binary compound created by reaction of bismuth and an unknown element E contains 52.07% Bi and 47.93% E by mass. If the formul
yulyashka [42]

Answer:

Atomic mass of E is 128.24

Explanation:

  • The percentage composition by mass of an element in a compound is given by dividing the mass of the element by the total mass of the compound and expressing it as a percentage.
  • In this case; the compound Bi₂E₃

Percentage composition of bismuth = 52.07%

Percentage composition of E = 47.93%

Mass Bismuth in the compound is (2×208.9804) = 417.96 g

Therefore,

To calculate the atomic mass of E

52.07% = 417.96 g

47.93% = ?

            = (47.93 × 417.96 ) ÷ 52.07 %

            = 384.729

         E₃ = 384.729

Therefore; E = 384.729 ÷ 3

                     = 128.24  

The atomic mass of E is 128.24

6 0
2 years ago
Other questions:
  • PLEASE LOOK AT POST MARKING BRAINIEST
    8·1 answer
  • Give two reasons why quarrying is bad for the environment?
    7·1 answer
  • For the process 2SO2(g) + O2(g) --> 2SO3(g),
    10·1 answer
  • How many moles of N are in 0.223 g of N2O
    8·1 answer
  • The rate of a hypothetical reaction involving L and M is found to double when the concentration of L is doubled and to increase
    14·1 answer
  • Rank the following in order from most acidic to least acidic. sample pH bleach 12.5 coffee 4.2 rainwater 5.4 soap 10.1 (1 point)
    9·1 answer
  • Which allotrope of carbon is used in lubricants, sporting goods, and aircraft?
    5·1 answer
  • Question 3
    7·1 answer
  • Why can water dissolve many substances
    14·1 answer
  • What do you think a mutation is?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!