2 years ago

Which one is right for brainliest

Chemistry

2 answers:

Radda [10]2 years ago

8 0

Answer:

Its the first and second options

Explanation:

You can simplify the 7b(3+c) to 21b+7bc or you can also make the problem be (7b*3)+(7b*c)

SVEN [57.7K]2 years ago

6 0

I believe it is the second option

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If an element forms 1- ion, in which group of the periodic table would you expect to find it

irina1246 [14]

Many of the elements on the periodic table will always form ions that have the same charge. The alkali metals (shown in yellow) always form +1 ions. The alkaline earth metals (red) always form +2 ions. The halogens (blue) always form -1 ions.

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2 years ago

Read 2 more answers

Perform the following operation

Paul [167]

$\quad \huge \quad \quad \boxed{ \tt \:Answer }$

$\qquad \tt \rightarrow \:2.8 × {10}^{-5}$

____________________________________

$\large \tt Solution \: :$

$\qquad \tt \rightarrow \: \dfrac{2.36 \times 10 {}^{ - 2} }{8.4 \times {10}^{2} }$

$\qquad \tt \rightarrow \: \dfrac{2.36 }{8.4 } \times \cfrac{10 {}^{ - 2} }{10 {}^{2} }$

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Answered by : ❝ AǫᴜᴀWɪᴢ ❞

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1 year ago

Continue off my answer

fgiga [73]

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2 years ago

What is the mass number of an atom which contains 21 electrons, 21 protons, and 24 neutrons?

murzikaleks [220]

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3 years ago

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nordsb [41]

Answer:

2 grams.

Explanation:

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2 years ago