3 years ago

Which feature of the Galapagos Finch observed by Charles Darwin contributed to his theory of evolution?

Chemistry

1 answer:

lukranit [14]3 years ago

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Beak size and shape. I remember doing this

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In this experiment the crest of one wave combined with the crest of the second wave to produce _______________.

timurjin [86]

Answer:

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Explanation:

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2 years ago

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Seawater is typically 3.5% salt and has a density of 1.03 g/mL. How many grams of salt would be needed to prepare enough seawate

Bas_tet [7]

Answer:

Amount of salt needed is around 2.3*10³ g

Explanation:

The salt content in sea water = 3.5 %

This implies that there is 3.5 g salt in 100 g sea water

Density of seawater = 1.03 g/ml

Volume of seawater = volume of tank = 62.5 L = 62500 ml

Therefore, the amount of seawater required is:

$=Density*Volume = 1.03g/ml*62500ml = 6.44*10^{4} g$

The amount of salt needed for the calculated amount of seawater is:

$=\frac{6.44*10^{4}g\ water*3.5g\ salt }{100g\ water} =2254 g =2.3*10^{3} g$

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3 years ago

What is the dependent and independent variable

sukhopar [10]

An independent variable is the variable changed or controlled in a scientific experiment to test the effects on the dependent variable. A dependent variable is the variable being tested and measured in a scientific experiment.

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3 years ago

What are the two fundamental portions of an atom?

Mice21 [21]

Number of Protons in an Uncharged Atom
The two main components of an atom are the nucleus and the cloud of electrons. The nucleus contains positively charged and neutral subatomic particles, whereas the cloud of electrons contains tiny negatively charged particles.

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Write the formula and determine the percent by mass of the salt in barium hydroxide octahydrate *

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Answer:

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