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3 years ago

If a radioisotope has a half-life of 4 years, how much remains of a starting amount of 40 grams after 16 years have passed?

Chemistry

1 answer:

Gwar [14]3 years ago

5 0

Answer:

only 2.5 grams will be present after 16 years have passed

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Calculate the volume of a 2.0 molar aqueous solution made from 14 miles of K2S

Vilka [71]

Answer:

volume is 7.0 liters

Explanation:

We are given;

Molarity of the aqueous solution as 2.0 M
Moles of the solute, K₂S as 14 moles

We are required to determine the volume of the solution;

We need to know that;

Molarity = Moles ÷ volume

Therefore;

Volume = Moles ÷ Molarity

Thus;

Volume of the solution = 14 moles ÷ 2.0 M

= 7.0 L

Hence, the volume of the molar solution is 7.0 L

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2 years ago

In a 4th period battle, the girls were able to overcome the in Tug-of-War. Ten boys each pulled with a force of 30 N. Six girls

cupoosta [38]

Answer:

10 N

Explanation:

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2 years ago

Give an example of a state function and explain why it is a state function

inessss [21]

A specific state which is defined being a property without the path taken to achieve that state based on it, is understood as a state function.
While the functions whose value is based on the direction taken among two states are named direction or path functions, on the other hand.
The system's thermodynamic condition relates to the current material in temperature, pressure and quantity.
State functions rely only on certain requirements and not on how they have been achieved. State functions for an instance, involve entropy, density, enthalpy and internal energy.
They are known as state functions as they quantitatively define a thermodynamic system's equilibrium condition, regardless of how the system landed in that condition.

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3 years ago

As the [ht] in a solution decreases, what happens to the [OH???

dimulka [17.4K]

Why you saying we can download an answer we’re here for an answer

6 0

2 years ago

I'm doing a adopt a element project and I need a slogan for bismuth please tell me a good one

trapecia [35]

Bismuth, it’s elemental!

Bismuth, Agent 83

Bismuth, what a catalyst?

I like you more than Bismuth

Bismuth, we love you

Get things done with Bismuth

It’s a Bismuth thing, you wouldn’t understand

Bismuth, it’s a brittle thing

Got Bismuth?

Bi Bro

Bismuth born Brittle

Silvery by default like Bismuth

Bi the one with Bismuth

http://www.bestslogans.com/list-ideas-taglines/periodic-table-bismuth-slogans/

https://sloganshub.org/bismuth-slogans/

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3 years ago