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charle [14.2K]
2 years ago
8

Darwin observed __________________ types of mockingbirds and finches lived in different island environments.

Chemistry
1 answer:
Aleks04 [339]2 years ago
8 0

Answer:    

Darwin observed <u>   many  different  </u> types of mockingbirds and finches lived in different island environments.

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Neutralization Reactions
PolarNik [594]

Answer:

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3 0
2 years ago
How many grams of calcium chloride will be produced when 29.0 g of calcium carbonate is combined with 15.0 g of hydrochloric aci
horsena [70]

Answer:

22.7 g of CaCl₂ are produced in the reaction

Explanation:

This is the reaction:

CaCO₃ +  2HCl  →  CaCl₂  + CO₂  +  H₂O

Now, let's determine the limiting reactant.

Let's divide the mass between the molar mass, to find out moles of each reactant.

29 g / 100.08 g/m = 0.289 of carbonate

15 g / 36.45 g/m = 0.411 of acid

1 mol of carbonate must react with 2 moles of acid

0.289 moles of carbonate will react with the double of moles (0.578)

I only have 0.411 of HCl, so the acid is the limiting reactant.

Ratio is 2:1, so I will produce the half of moles, of salt.

0.411 / 2 = 0.205 moles of CaCl₂

Mol . molar mass = mass → 0.205 m . 110.98 g/m = 22.7 g

5 0
3 years ago
What is the equation for determining gas pressure?
Advocard [28]

Answer:

Explanation:

First, let's review the ideal gas law, PV = nRT. In this equation, 'P' is the pressure in atmospheres, 'V' is the volume in liters, 'n' is the number of particles in moles, 'T' is the temperature in Kelvin and 'R' is the ideal gas constant (0.0821 liter atmospheres per moles Kelvin)

8 0
3 years ago
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How do dominant and recessive traits impact genotype and phenotype?
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The phenotype depends on the dominant allele. Only people with aa genotype will express recessive traits. Hope this helped!
7 0
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Which statements are true about Figure I and Figure II below? (Check all that apply)
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Both figures are mixtures,

Figure II is a heterogenous mixture

Figure I is a homogenous mixture

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3 years ago
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