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Liula [17]
3 years ago
14

During the early paleozoic land plants begin to grow which consisted of

Chemistry
1 answer:
Gnesinka [82]3 years ago
7 0
B. (Hope This Helps)
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2. Petroleum is used to make
Nonamiya [84]

Answer:

D. all of the above

Explanation:

5 0
3 years ago
sucrose (sugar)crystals obtained from sugarcane and bet root are mixed together .with it be a pure substancesor a mixture ?give
Vesnalui [34]

Answer:

It will be a pure substance (compound) because chemical composition of sugar crystals will be the same whether obtained from sugarcane or from beet root.

<h3>hope it's help you </h3><h3>plz mark as brain list ...!!</h3>
5 0
3 years ago
Which of the following fractions can be used in the conversion of 1000 mL to the unit m3? 1L/1ML 1CM^3/1ML 1CM^-3/1ML 1M^3/1L
Flauer [41]
The conversion that can be used is 1 cm³ / mL
After multiplying by this conversion, we get:
1000 mL * (1 cm³ / mL) = 1000 cm³

Next, we may convert directly from cm³ to m³ by:
1 m = 100 cm
1 m³ = 100³ cm³

Using this conversion, we get the volume in m³ to be:
0.001 m³
6 0
4 years ago
4. 213.4 grams of NaNO3 contain how many moles?
WARRIOR [948]

Answer:

Explanation:

mass of NaNO3 = 213.4g

Molar mass = {23 + 14 + 3(16)}

= 23 + 14 + 48

= 85g/mol

Amount = mass/molar mass

= 213.4/85

= 2.5moles of NaNO3

5 0
3 years ago
Consider a bond between boron and oxygen. Which atom would you expect to bear the partial negative charge?
horsena [70]

Oxygen is more electronegative than boron. It has more tendency to attract a electron pair while boron is electropositive that means it has more tendency to lose an electron so when there will be a bond between boron and oxygen than boron carries the partial positive charge while oxygen carries the partial negative charge.

6 0
3 years ago
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