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2 years ago

Iodine-138 decays by beta decay. What element does it produce?

Chemistry

2 answers:

iVinArrow [24]2 years ago

4 0

${xe}^{138}$

Explanation:

the bottom number would be 54. This is because you add one to 53 to make it 54 and you add 0 to 138.

OverLord2011 [107]2 years ago

4 0

The bottom number would be 54 and you add 0 to 138

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The atomic mass of gold is 197 g/mole, and the density of gold is 19.3 g/cm3. using this information along with the measured val

olganol [36]

The speed of sound is given by the formula
Speed of sound = square root (Young's Modulus/density)
Young's modulus for gold = 78 GPa which is 7.8 * 10^10 Pa
Speed of sound = (7.8 * 10^10 / 19.3 ) = sqrt (4.04 * 10^9 )
Speed of sound = 6.36 * 10^4 m/s <<<=== answer.

6 0

3 years ago

A client presents with fatigue, nausea, vomiting, muscle weakness, and leg cramps. The laboratory values are as follows: sodium

Ganezh [65]

Answer: The laboratory value of potassium (3.0 mmol / L) is consistent with the client's symptoms of hypokalemia.

Explanation:

Hello!

Let's solve this!

Hypokalemia is a disorder in the body's electrolyte balance, when the decrease in blood potassium (K) ion levels is below 3.5 mmol / L. Potassium losses can occur through the digestive tract: such as vomiting and

diarrhea The most frequent symptoms of potassium loss include: tiredness, muscle weakness and cramping.

In conclusion, the laboratory value of potassium (3.0 mmol / L) is consistent with the client's symptoms of hypokalemia.

6 0

3 years ago

You may have to recrystallize any or all of the components of your extraction mixture, benzoic acid, ethyl-4-aminobenzoate and f

hjlf

Answer:

the Recrystallization solvents are;

-Sodium Hydroxide Base (NaOH)

- Hydrochloric Acid (HCl)

- Sand bath when acidic and basic components are removed.

Explanation:

Recrystallization is simply a technique used to purify an impure compound in a solvent.

Now, we want to purify the mixture of benzoic acid, Ethyl-4-aminobenzoate and fluorenone.

For the benzoic acid, it can be separated out of the mixture by addition of sodium hydroxide base (NaOH).

The Ethyl - 4 - aminobenzoate will be separated from the mixture by the addition of Hydrochloric Acid (HCl).

The fluorenone would be separated out by heating the mixture in a sand bath after the basic and acidic components have already been extracted out.

Thus, the Recrystallization solvents are;

-Sodium Hydroxide Base (NaOH)

- Hydrochloric Acid (HCl)

- Sand bath when acidic and basic components are removed.

6 0

3 years ago

Analysis of a reaction mixture showed that it had the composition 0.411 mol/L N2, 0.535 mol/L H2, and 0.118 mol/L NH3 at 800 K,

WINSTONCH [101]

Your answer is oxide,h2o, and 0.535

4 0

2 years ago

Calculate the grams of solute required to make 250 g of 0.10% MgSO4 (m/m).

valentinak56 [21]

Answer:

= 0.25 g MgSO4

Explanation:

0.10% implies that the solution will contain 0.1 g of magnesium sulfate, for every 100 mL of solution.

Therefore;

= 250 g × 0.1 g/100 mL

= 0.25 g MgSO4

3 0

3 years ago

Read 2 more answers