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3 years ago

Can i get this answer pls

Chemistry

2 answers:

lions [1.4K]3 years ago

4 0

Answer:

$a) yellow \: pea \: seeds \: I \: think.$

RSB [31]3 years ago

3 0

Answer:

Explanation:

In genetic terms, a dominant trait is one that is phenotypically expressed in heterozygotes

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The alcohol functional group contains the elements of (a)______ and (b)______

sdas [7]

Answer:

oxygen and hydrogen

Explanation:

the alcohol group is known as the -OH group, which has oxygen bonded to a hydrogen

7 0

4 years ago

Why is rusted iron an example of an oxidation–reduction reaction? electrons are exchanged?

rodikova [14]

Electrons are exchanged, yes.

7 0

3 years ago

Read 2 more answers

Choose the best classification of the reactions C6H12O6 (g) + 6O2 yields 6CO2 + 6H2O

marta [7]

Combustion reaction because it produces water and carbon dioxide

6 0

3 years ago

CaCO3(s) ∆→CaO(s) + CO2(g).

sveta [45]

Answer:

74.9%.

Explanation:

Relative atomic mass data from a modern periodic table:

Ca: 40.078;
C: 12.011;
O: 15.999.

What's the theoretical yield of this reaction?

In other words, what's the mass of the CO₂ that should come out of heating 40.1 grams of CaCO₃?

Molar mass of CaCO₃:

$M(\text{CaCO}_3) = 40.078 + 12.011 + 3 \times 15.999 = 100.086\;\text{g}\cdot\text{mol}^{-1}$ .

Number of moles of CaCO₃ available:

$\displaystyle n(\text{CaCO}_3) =\frac{m}{M} = \frac{40.1}{100.086} = 0.400655\;\text{mol}$ .

Look at the chemical equation. The coefficient in front of both CaCO₃ and CO₂ is one. Decomposing every mole of CaCO₃ should produce one mole of CO₂.

$n(\text{CO}2) = n(\text{CaCO}_3)= 0.400655\;\text{mol}$ .

Molar mass of CO₂:

$M(\text{CO}_2) = 12.011 + 2\times 15.999 = 44.009\;\text{g}\cdot\text{mol}^{-1}$ .

Mass of the 0.400655 moles of $\text{CO}_2$ expected for the 40.1 grams of CaCO₃:

$m(\text{CO}_2) = n\cdot M = 0.400655 \times 44.009 = 17.632\;\text{g}$ .

What's the percentage yield of this reaction?

$\displaystyle \textbf{Percentage}\text{ Yield} = \frac{\textbf{Actual}\text{ Yield}}{\textbf{Theoretical}\text{ Yield}}\times 100\%\\\phantom{\textbf{Percentage}\text{ Yield}} = \frac{13.2}{17.632}\times 100\%\\\phantom{\textbf{Percentage}\text{ Yield}} =74.9\%$ .

7 0

3 years ago

A student asks a serious of questions about a wave. The answer to which question will allow the student to determine whether the

S_A_V [24]

Answer:

Does the wave require a medium in order to travel?

Explanation:

The question whose answer would determine whether the wave in question is mechanical or electromagnetic would be if the wave requires a medium in order to travel or otherwise.

A mechanical wave would require a medium in order to transport its energy from one place to another, that is, travel. On the other hand, an electromagnetic wave does not require any medium in order to travel, that is, it can travel through vacuums or empty spaces. Light and sound waves are typical examples of electromagnetic and mechanical waves respectively.

6 0

3 years ago