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melomori [17]
4 years ago
9

Which elements families are most likely to react with one another?

Chemistry
1 answer:
Papessa [141]4 years ago
8 0

:

alkali metals will

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Write the chemical formula for carbon tetrachloride and calcium bromide
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Carbon tetra chloride = CCl4

calcium bromide = CaBr2
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3 years ago
What is the ph of a buffer consisting of 0.200 m hc2h3o2 and 0.200 m kc2h3o2? the k a for hc2h3o2 is 1.8×10−5. view available hi
AURORKA [14]
PH = pKa + log \frac{[base]}{[Acid]}
Acid  is HC₂H₃O₂ and conjugate base is KC₂H₃O₂,
pKa = - log Ka = - log (1.8 x 10⁻⁵) = 4.74
so pH = 4.74 + log (0.2/0.2) = 4.74
This is called maximum buffer capacity (when acid conc. and base conc. are equal) the pH = pKa in this case
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3 years ago
Which step will decrease the pressure of a gas inside a closed cubical container?
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4 years ago
1.Calculate the end velocity of a rocket that traveled 16km in 2 seconds.
fomenos

Answer:

1}800m/s

2}80m/s²

Explanation:

1]first convert the kilometers to meters so as to obtain similar units;

16×1000=16000m   (1Km=1000m)

then divide the ditance by time:

speed=distance/time  

=16000m/2s

=800m/s

2]acceleration=(initial velocity -final velocity)/time taken

=(800m/s-0m/s)/10s

=800m/s/10s

=80m/s²

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