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
telo118 [61]
3 years ago
6

Iodine-131 has a half-life of 8 days. If you have 8 g of I-131 and 16 days pass, how much I-131 do you have left?

Chemistry
1 answer:
alexandr1967 [171]3 years ago
3 0

Answer:

2g

Explanation:

2 half-lives will pass. Therefore the amount will be quartered into 2g.

You might be interested in
What is the difference between a 1s orbital and a 2s orbital is that
iVinArrow [24]

Answer:

The main difference is their energy level, 2s orbital is higher than 1s orbital.

4 0
4 years ago
Is cyclohexanol an alkane, alkene, or an alcohol?
Oxana [17]
Cyclohexanol is an Alcohol..........
8 0
3 years ago
Please help! Help me solve problems about naming structures with IUPAC rules
lianna [129]
A. The longest carbon chain is eight, and it has two methyl groups attached to carbon three, and a special group attached to carbon five. Its two names could be:

3-dimethyl-5-(1-methylethyl)octane
3-dimethyl-5-isopropyloctane

Both of these are correct. This is an alkane, because it has all single bonds.

B. This has a triple bond contained between carbons 2 and 3, and has a methyl group off carbon 4. The longest chain is 5. It’s name is:

4-methyl-2-pentyne

This is an alkene, because of the double bond.

C. This has a double bond contained between carbons 2 and 3, and has a methyl off of four and an methyl off of six. The longest chain is eight (follow the longest chain of carbons).

4,6-dimethyl-2-octene

This is an alkene, because of the double bond.

D. This has an ethyl group at 1 and a methyl group at 2 (rotate the compound to make it as clean as possible, in this case, the ring is flipped and rotated to make it alphabetical with the smallest numbers possible). The two names are:

1-ethyl-2-methylbenzene
ortho-ethylmethylbenzene

Both are correct, the ortho prefix telling the location of the ethyl and methyl groups. This is an aromatic structure because of its double bonded ring.

E. The longest chain is nine, and has methyls at three, five, and seven, along with a propyl at five. The name is:

3,5,7-trimethyl-5-propylnonane

This is an alkane, due to the single bonds.

Hope this helps!
7 0
3 years ago
How would you separate the following ions by selective precipitation Ag + , Pb 2+, Cu 2+.​
Lemur [1.5K]

Answer:

we cannot vduurggruuriirru**

4 0
3 years ago
Why are all of the substances on the periodic table classified as elements?
Readme [11.4K]

All elements are pure substances.

4 0
3 years ago
Read 2 more answers
Other questions:
  • Provide examples of physical weathering and chemical weathering in the chart below
    8·1 answer
  • Select the correct choice there's only one answer.
    11·2 answers
  • What is the percentage of aluminum in aluminum oxide (al2o3?
    6·2 answers
  • Determine a planet from our solar system is located far from the sun. Describe the size and composition of this planet
    11·2 answers
  • A sample of ph3 has mass 27.5g how many molecules are in this sample
    7·1 answer
  • A block of wood has the mass of 180 grams.it is 10 cm long,6 cm wide and 4 cm thick.what is it’s density?
    14·1 answer
  • Please answer FAST i will make you barinlest
    13·2 answers
  • Predict the missing particle or nuclide.
    10·1 answer
  • Which correctly lists two characteristics of crystal faces that define crystal systems?
    11·2 answers
  • There are the same number of these two particles in an atom
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!