The theory of continental drift was given a scientific status during the

2 answers:

6 0

1960's. hoped i helped <span>The continental drift theory is the theory that once all of the continents were joined in a super-continent, which scientists call Pangaea. Over a vast period</span>

meriva4 years ago

3 0

1960's is your answer

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What is Gram Atomic mass ?

KIM [24]

Answer:

Gram atomic mass of an element can be defined as the mass of one mole of atoms of a particular element. It is numerically equivalent to the value of the element's atomic mass unit but has its unit in grams.

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2 years ago

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All of the above

Natalka [10]

The plants without any fertiliser could be the control, to see what the change in the independent variable (fertiliser) does to the growth of the plant (dependant variable).

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3 years ago

Choose all resonance structures of ocn− with right formal charges in each. check all that apply.

Doss [256]

Formal charge on an element in a molecule is calculated by using following formula,

Formal Charge = [# of Valence Electrons] - [Electrons in Lone Pairs +
1/2 the # of Bonding Electrons]

Example:
Let's calculate the formal charge present on Oxygen atom in Structure 1. The oxygen atom has,

6 Valence shell electrons

2 Bond Pair Electrons

6 Lone pair Electrons
So,
Formal Charge = [6] - [6+2/2]

Formal Charge = 6 - 7

Formal Charge = -1

You can calculate formal charges on all atoms in all three structure. I have drawn the structures with formal charges.

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3 years ago

The volume of a sample of water is 2.5 milliliters (mL). The volume of this sample in liters (L) is

zvonat [6]

<span>If the volume of a sample of water is 2.5 milliliters, the volume of this sample in liters is A.) 2.5 x 10^-3 L. 1 mL = 1 x 10^-3 L. 2.5 mL = x L. Make a proportion. 1 mL : 1 x 10^-3 L = 2.5 mL : x. x = 2.5 mL * 1 x 10^-3 L : 1 mL. x = 2.5 x 10^-3 L. Therefore, 2.5 mL = 2.5 x 10^-3 L.</span>

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Fractions of crude oil

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Answer:

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