3 years ago

Isabel wants to determine the mass of a metal block. What is the SI unit for mass

Chemistry

1 answer:

taurus [48]3 years ago

6 0

Answer:

Explanation:

The SI unit for mass is the KG

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200 million year to 550 million years old

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3 years ago

What has 39 neutrons which element

Rasek [7]

No of Neutrons =Mass No-No of protons

Proton=Neutron+1

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$\\ \sf\longmapsto x=39-1=38$

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What name is given to bonds that involve the sharing of electrons?

Nana76 [90]

A. Covalent bonds is the answer

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What is the oh−concentration and ph in each solution? (a) 0.225 m koh, (b) 0.0015 m sr(oh)2?

shepuryov [24]

Q1)
We have been given the OH⁻ concentration, therefore we first need to find the pOH value and then the pH value.
pOH = -log [OH⁻]
pOH = -log (0.225 M)
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Q2)
pOH = -log[OH⁻]
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3 years ago

Draw structures corresponding to the following IUPAC names:(a) (Z)-2-Ethyl-2-buten-1-ol (b) 3-Cyclohexen-1-ol(c) trans-3-Chloroc

Allushta [10]

Answer:

Draw structures corresponding to the following IUPAC names:(a) (Z)-2-Ethyl-2-buten-1-ol (b) 3-Cyclohexen-1-ol(c) trans-3-Chlorocycloheptanol (d) 1,4-Pentanediol(e) 2,6-Dimethylphenol (f ) o-(2-Hydroxyethyl)phenol

Explanation:

According to IUPAC rules, the name of a compound is:

Prefix+root word+suffix

1) Select the longest carbon chain and it gives the root word.

2) The substituents give the prefix.

3) The functional group gives the secondary suffix and the type of carbon chain gives the primary suffix.

The structure of the given compounds are shown below:

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3 years ago