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4 years ago

Approximately what precent of parent isotopes remains after 0.5 half lives have passed

1 answer:

5 0

If 1 half life is over than 50 percent is left
I think it would be logicak to assume after half a half life passes there will be 75 percent left

You might be interested in

Which ions are isoelectronic with Krypton?

Tresset [83]

Answer:

Bromine

Explanation:

Bromine with an atomic number of 35 acquires one electron to attain 36 electrons. This makes it isoelectronic with krypton.

5 0

3 years ago

Match the words in the left column to the appropriate blanks in the sentences on the right. Make certain each sentence is comple

MariettaO [177]

Answer:

1. Helper T cell is one of the T cells that absence results in no immune response.

2. Cytotoxic T cell is also a type of white blood cell that Kills cancer cells and virus infected body cells.

3. Regulatory T cell is a suppressor T cells that slows or stops the immune response.

4. Memory cell is a type of B cell that enables quick and efficient response to secondary exposure to antigen

5. B cell is a cell that forms antibody producing cells

5 0

3 years ago

Round to 3 significant figures.<br> 1.235

tigry1 [53]

Answer:

3 SigFigs = 1.24

1.24 x $10^{0}$

Explanation:

3 0

4 years ago

Read 2 more answers

Dennie wanted to see if crayfish preferred one kind of food over another. He gave one group of crayfish plants, both living and

iogann1982 [59]

Answer:

A) type of food.

5 0

3 years ago

two objects each have a mass of 5.0 g. one had a density of 2.7 g. and the other has a density of 8.4 g. which object has a larg

gulaghasi [49]

Answer:

The body with 2.7 $\frac{g}{(cm^3)}$ has a larger volume

Explanation:

There is a missespelling in the question. The units of density cannot be g, they usually are $\frac{g}{(cm^3)}$

In order to answer this question, we need to use the formula of the density of a body:

$Density = \frac{Mass}{Volume} = \frac{M}{V}$

For body A:

Mass (M) = 5.0 g

Density (D) = 2.7 $\frac{g}{(cm^3)}$

2.7 $\frac{g}{(cm^3)}$ = 5g * 1/V

V1 = 5g / (2.7 $\frac{g}{(cm^3)}$ )

V1 = 1.85 $1.85 cm^3$

For Body B:

Mass (M) = 5.0 g

Density (D) = 8.4 $\frac{g}{(cm^3)}$

8.4 $\frac{g}{(cm^3)}$ = 5g * 1/V

V2 = 5g / (8.4 $\frac{g}{(cm^3)}$ )

V2 = 0.59 $1.85 cm^3$

So V1 is bigger than V2

5 0

3 years ago