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
Yuki888 [10]
3 years ago
8

Using the half-life graph of cobalt-57, choose ALL the statements that are accurate.

Chemistry
1 answer:
Morgarella [4.7K]3 years ago
5 0

Answer: B) The half-life of Co-57 is 10 days

D) After twenty days have elapsed, about 25% of the Co-57 remains.

E) Scientists have an 8 gram sample of Co-57. After thirty days, 1 gram remains.

Explanation:

You might be interested in
A scientist notices that a lump of niobium is warm to the touch and wonders if nuclear reactions are taking place in the metal.
Sedaia [141]
<span>Of the answers listed option B looks like the most complete. Ie "Check for the presence of alpha, beta, and gamma particles." the significant presence of these particles is a specific indicator of radioactive decay, i.e: unstable atoms spontaneously undergoing a nuclear reaction.</span>
6 0
3 years ago
Read 2 more answers
Please help its difficult
Likurg_2 [28]

Answer:

pounds

pounds pounds pounds

8 0
3 years ago
How many neutrons are found in a stable isotope of uranium-235?
bezimeni [28]

thx but it's actually 143

8 0
3 years ago
Represent the decomposition of aluminum oxide using the same number of atoms of molecules as are
pantera1 [17]

Answer:

Decomposition of aluminium oxide forms  aluminium atoms and  oxygen atoms.

Explanation:

<u>Decomposition reaction:</u>

When a single compound break down into two or more simpler products.

For example "AB" reactant undergoes decomposition to form "A" and "B" products.

The chemical reaction is as follows.

AB\rightarrow A+B

The given compound is aluminium oxide.

The decomposition reaction of aluminium oxide is a follows.

Al_{2}O_{3}\rightarrow Al+O_{2}

The balanced equation is as follows.

2Al_{2}O_{3}\rightarrow 4Al+3O_{2}

Therefore, Decomposition of aluminium oxide forms aluminium atoms and  oxygen atoms.

4 0
3 years ago
How many molecules of ammonia are produced from the reaction of
vivado [14]

Answer:

9.5X10^23 molecules N2 X (2 molecules NH3 / 1 molecule N2) = 1.9X10^24 molecules NH3

Explanation:

.

8 0
3 years ago
Other questions:
  • HELP!!!
    6·2 answers
  • Which of the following changes will decrease the rate of collisions between gaseous molecules oftype A and B in a closed contain
    5·1 answer
  • How do the properties of table salt compare with those of sodium and chlorine?
    7·1 answer
  • A sound is created when matter vibrates<br> A.True<br> B.False
    7·2 answers
  • There are four springs stretched by the same mass. Spring A stretches 25 cm. Spring B stretches 10 cm. Spring C stretches 100 cm
    7·1 answer
  • Write out and balance the chemical equation:
    12·2 answers
  • How many atoms are there in 1 g of argon?
    6·1 answer
  • Predict the ELECTRON and MOLECULAR geometry for a molecule with 5 bonding domains and two lone pairs.
    9·1 answer
  • How is hydrogen an example of an element?
    11·2 answers
  • Q1. The equation for the reaction between sulfur dioxide and oxygen is shown.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!