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3 years ago

Please help!!

Chemistry

2 answers:

AlexFokin [52]3 years ago

8 0

Answer:

Some factors that could cause the percent yield to be less than 100% include

1. If the position of equilibrium lies to the right,

2. If the concentration of the products is greater than the concentration of the reactants

liraira [26]3 years ago

6 0

This is one of the explanations I could think of,

Many reactions are incomplete and the reactants are not completely converted to products. Understandably due to loss in the process or inefficiency of the chemical reaction

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In general, atomic radii:

Artist 52 [7]

<u>Answer:</u> The correct answer is Option E.

<u>Explanation:</u>

Atomic radius is defined as the total distance measured from the nucleus of an atom to the outermost shell.

<u>Trend down the group:</u>

Moving from top to bottom, a new shell gets add up around the nucleus and the outermost shell gets far away from the nucleus. Due to this, the distance between the nucleus and outermost shell increases, which results in the increase of atomic radii of the atom.

<u>Trend across the period:</u>

Moving from left to right in a period, more and more electrons gets add up in the same shell. The attraction between the last electron and the nucleus increases. This results in the shrinkage of size of an atom. Thus, decreasing the atomic radii of the atom.

Hence, the correct answer is Option E.

5 0

3 years ago

If this pattern of change in the allele frequencies continued over several more generations, what might eventually happen to the

I am Lyosha [343]

Answer:

The frequency of each allele will be prononced and more evident in each offspring

Explanation:

Darwin's theory brings into play natural selection such that offsprings inherit traits that make them adapt better to their environment. Thus, with each generation moving on, will inherit greater and pronounced trait due to increased allele expression

5 0

3 years ago

If 30.0 mL of 0.150 M CaCl₂ is added to 38.5 mL of 0.100 M AgNO3, what is the mass of the AgCl precipitate?

Ksenya-84 [330]

If 30.0 mL of 0.150 M CaCl₂ is added to 38.5 mL of 0.100 M AgNO3. The mass of the AgCl precipitate is 0.552 g.

<h3>What is Stoichiometry ?</h3>

Stoichiometry helps us use the balanced chemical equation to measure quantitative relationships and it is to calculate the amounts of products and reactants that are given in a reaction.

<h3>What is Balanced Chemical Equation ?</h3>

The balanced chemical equation is the equation in which the number of atoms on the reactant side is equal to the number of atoms on the product side in an equation.

Now we have to write the balanced equation

2AgNO₃ + CaCl₂ → 2AgCl + Ca(NO₃)₂

Molecular Weight of CaCl₂ = 110.98 g/mol

Molecular Weight of AgNO₃ = 170.01 g/mol

Molecular Weight of AgCl = 143.45 g/mol

Here,

Volume of CaCl₂ = 30.0 mL = 0.03L

Volume of AgNO₃ = 38.5 mL = 0.0385 L

Now find the number of moles

Number of moles = Volume × Molarity

Number of moles of CaCl₂ = 0.03 L × 0.150

= 0.00456 mol

Number of moles of AgNO₃ = 0.0385 L × 0.100

= 0.00385 mol

The stoichiometric ratio of AgNO₃ to CaCl₂ is 2:1.

= $\frac{0.00385}{2}$

= 0.001925 mol

According to Stoichiometry Mass of AgCl

$= 0.0385 \times \frac{0.1}{1\ \text{mol}} \times \frac{2\ \text{mol} AgCl}{2\ \text{mol} AgNO_3} \times \frac{143.4\ g}{1\ \text{mol}}$

= 0.552 g AgCl

Thus from the above conclusion we can say that If 30.0 mL of 0.150 M CaCl₂ is added to 38.5 mL of 0.100 M AgNO3. The mass of the AgCl precipitate is 0.552 g.

Learn more about the Stoichiometry here: brainly.com/question/16060223

#SPJ1

5 0

1 year ago

Which of the following nuclei would be the most stable?

ValentinkaMS [17]

Ten protons would be Neon, but the most stable? I'd have to say 12 neutrons in contrast to the 10 protons. Not too negative in balance.

6 0

3 years ago

WILL GIVE BRAINLIEST

Anika [276]

Answer: