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3 years ago

What is 33 divided by 1862

Chemistry

2 answers:

beks73 [17]3 years ago

4 0

0.01772288- Calculators do come in handy for this haha

Alekssandra [29.7K]3 years ago

4 0

$33 \div 1862 \\ \\ 0.0177 \\ \\ Answer: \fbox {0.0177}$

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The [OH-] of a solution is 7.89 10^-12 M. What is the pH of the solution? it acidic or basic? *

kompoz [17]

Answer: pH = 2,897 , basic $[H+][OH-] = 10^{-14} ==> [H+] = \frac{10^{-14}}{7,89*10^{-12} } =\frac{1}{789} \\pH= -lg([H+]) = 2,897 \\pH basic$

Explanation:

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3 years ago

PLEASE!!! I NEED HELP ASAP!!

Lana71 [14]

W=m₁/m₀=2^(-t/T)

t=4.6·10⁹ years
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w=2^(-4.6·10⁹/5·10¹⁰)

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3 years ago

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Carbon dioxide is a...

Marina86 [1]

Answer: Option B) Pure Substance &

Compound

Explanation:

Carbon dioxide is a compound because it is formed when one carbon atom and two oxygen atoms chemically combined together.

C(s) + O2(g) ---> CO2(g)

Also, CO2 is a pure substance because it is natural and cannot be broken down easily or separated by physical methods.

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3 years ago

The graph above plots gravitational force versus distance for two asteroids of equal mass (10 billion kg). When the distance bet

natima [27]

Answer:ABOUT 74 N

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3 years ago

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What happens when magnesium reacts with iodine to make magnesium iodide?

I am Lyosha [343]

Explanation:

Atomic number of magnesium is 12 and its electronic distribution is 2, 8, 2. On the other hand, atomic number of iodine is 53 and its electronic configuration is $[Kr]4d^{10}5s^{2}5p^{5}$ .

Hence, there are 7 valence electrons in an iodine atom and there are 2 valence electrons in a magnesium atom.

So, one atom of iodine requires one electron from a donor atom to complete its octet. But one magnesium atom contains two valence electrons.

Therefore, one magnesium atom will combine with two iodine atoms to result in the formation of magnesium iodide as follows.

$Mg^{2+} + 2I^{-} \rightarrow MgI_{2}$

Therefore, an ionic bond will be formed when magnesium reacts with iodine to make magnesium iodide.

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3 years ago