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Rasek [7]
2 years ago
11

The molar mass of an unknown material is 78.430 g/mol. What is the mass of half of a mole of the unknown material?

Chemistry
2 answers:
krek1111 [17]2 years ago
6 0

Answer:

hoy

Explanation:

True [87]2 years ago
6 0

Answer:

39.215g

Explanation:

Molae mass means mass in 1 mole.

If 78.430g is in 1 mole

Xg is in 0.5 mole

cross multiply

X x 1 = 78.430 x 0.5

X = 39.215 g

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Explanation:

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a device not a paper map

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4 0
3 years ago
1.<br> Draw the Dot Structure for Na!
stepladder [879]

Answer:

Na ·

Explanation:

Hello!

In this case, since the Lewis dot structure of any element illustrates the number of valence electrons at the outer shell; we can set up the electron configuration of sodium to obtain:

Na^1^1\rightarrow 1s^2,2s^2,2p^6,3s^1

We can see there is only one valence electron, for that reason the Lewis dot structure is:

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Best regards!

4 0
2 years ago
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Marta_Voda [28]
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3 years ago
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larisa [96]
A. is the answer
if u have any doubts ask me
please mark as brainliest
8 0
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kirza4 [7]

To estimate the number of ladybugs in the entire garden, Ajoy needs the dimension of the garden.

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