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AleksAgata [21]
3 years ago
8

True or false an object must be in contact to exert a force

Chemistry
1 answer:
steposvetlana [31]3 years ago
6 0

Answer:

False

Explanation:

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Core electrons shield what from the pull of the nucleus?
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Answer:

C. Valence electrons

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Please mark my answer as brainliest, I would appreciate it.

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5 0
3 years ago
25 POINTS
Rudiy27

EASY AS PIE AND I LIKE PIE

Calcium iodide (CaI2) is an ionic bond, which means that electrons are transferred.  In order for Ca to become the ion Ca2+, the calcium atom must lose 2 electrons. (Electrons have a negative charge, so when an atom loses 2 electrons, its ion becomes more positive.)  In order for I to become the ion I1−, the iodine atom must gain 1 electron. (When an atom gains an electron, its ion will be more negative.)  However, the formula for calcium iodide is CaI2 - there are 2 iodine ions present. This makes sense because the iodine ion has a charge of -1, so two iodine ions have to be present to cancel out the +2 charge of the calcium ion.  Therefore, the calcium atom transfers 2 valence electrons, one to each iodine atom, to form the ionic bond.

IF WRONG, SORRY

8 0
4 years ago
Read 2 more answers
What is the mass of 4.75 mol H2SO4
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M(H2SO4)=n*M=4.75*98=465.5g
7 0
3 years ago
Balance sulfur and oxygen​
abruzzese [7]

Answer:

sulphuroxide

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S+O2=SO2

6 0
3 years ago
Imagine snow on top of a mountain. Describe at least two ways energy could be transferred as the seasons change?
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at summer season the snow will melt and will produce water and using generators we can produce electric energy and in spring and winter can produce electric energy also using the wind

8 0
2 years ago
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