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son4ous [18]
3 years ago
15

The atomic number of polassium and

Chemistry
1 answer:
never [62]3 years ago
6 0

Explanation:

Atomic radius decreases from left to right in a period.

Therefore Calcium would have a smaller atomic size.

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You burn a 15g jellybean to warm 50 mL of water, which increases the temperature of the water 25 °C. How many calories of heat a
Juli2301 [7.4K]

Answer:

Q = 375\,cal

Explanation:

The quantity of heat transfered from the jellybean to the water is:

Q = \rho\cdot V \cdot c\cdot \Delta T

Q = \left(1\,\frac{g}{cm^{3}}\right)\cdot (15\,cm^{3})\cdot \left(1\,\frac{cal}{g\cdot ^{\circ} C} \right)\cdot (25\,^{\circ}C )

Q = 375\,cal

7 0
3 years ago
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N76 [4]
They contain atoms including nucleus proton electron and neutron
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True or false your nose is responsible for 80% of your taste
eimsori [14]

Answer:

True!

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Which of the following is most electronegative? P,N,Mg,C,O
Elanso [62]
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as we know, oxygen is the best at accepting electrons from this list, so the answer is oxygen
3 0
3 years ago
What percentage of strontium-90 remains in a sample after three half-lives have passed? 12.5% 15% 25% 60%?
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12.5% of strontium-90 would remain in a sample after three half-lives have passed. Half-life automatically means 50% of the original amount would remain.

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3 years ago
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