3 years ago

True or false? When sodium and chlorine combine and bond, a molecule is formed.

1 answer:

3 0

When Sodium and Chlorine come together they transfer an electron.

- Source: google

Hopefully this was clear and you understood!

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Keith_Richards [23]

Answer:

Molar mass of Ca = 40 g / mol , given 123 g Ca is 123/40= 3.075 moles,

1 mole = 6.022 * 10^23 atoms, so 3.075 moles Ca= 18.51*10^23 atoms

Explanation:

5 0

3 years ago

crimeas [40]

Since we already have the balanced equation, we know that the ratio between $Na:Na_{2}O$ is $4:2$ respectively.

So then we can set up a proportion to find the number of moles produced when 2.90 moles of Na react completely:

$\frac{4mol_{Na}}{2mol_{Na_{2}O}} =\frac{2.90mol_{Na}}{xmol_{Na_{2}O}}$

Then we cross multiply and solve for x:

$4x=5.8$

$x=1.45$

Therefore, we know that when 2.90 moles of Na react completely, there are 1.45 moles of $Na_{2}O$ that are produced.

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3 years ago

NemiM [27]

Answer:

1.4 millions atmospheres

Explanation:

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3 years ago

d1i1m1o1n [39]

2moles of O2 are formed.

5 0

3 years ago

Gnesinka [82]

276 grams of carbon in 23.0 moles

3 0

3 years ago