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leonid [27]
3 years ago
5

Given 1.00 grams of each of the following radioisotopes, Ca-37, U-238, P-32 and Rn-222,which would have the least remaining orig

inal isotopes after 100 years?
1) Ca-37
2) U-238
3) P-32
4) Rn-222
Chemistry
1 answer:
erica [24]3 years ago
5 0
1) Ca-37, with a half-life of 181.1(10) ms.
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In the diagram, above, marker E is pointing to a __________, which is the “winding” shape that a river can take and its shape is
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Answer:

meander

Explanation:

A meander is the the “winding” shape that a river can take.  It is  is one of a series of regular sinuous curves, bends, loops, turns, or windings in the channel of a river, stream, or other watercourse(wikipedia).

A meander is formed when water in the river erodes the banks just outside its channel. The water then deposits some sediments inside the channel.

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2 years ago
Potassium carbonate, K 2CO 3, sodium iodide, NaI, potassium bromide, KBr, methanol, CH 3OH, and ammonium chloride, NH 4Cl, are s
slava [35]

Answer:

Potassium carbonate (K₂CO₃)

Explanation:

The compounds dissociate into ions in water, as follows:

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NaI → Na⁺ + I⁻    ⇒ 2 dissolved particles per mole

KBr → K⁺ + Br⁻   ⇒ 2 dissolved particles per mole

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3 0
3 years ago
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mart [117]

Answer:

reaction B is the best one I would choose

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Please help me<br> 5. Where is potential energy decreasing?<br> А B C D
Nataly [62]

Answer:

D

Explanation:

I believe it is D. your kinetic energy would be at b. A, the cart would be going at a constant rate, because there is no hill or steep slope.

7 0
2 years ago
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