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3 years ago

Scientists have been able to find a full record of Earth's fossil history, thus making the fossil record complete.

Chemistry

1 answer:

Arada [10]3 years ago

5 0

Answer:

False

Explanation:

Few organisms were not preserved as well as others, and new fossils are found every day

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True Or False? A magnet slows down because it created an opposing electric force as it fell.

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Answer:

faules

Explanation:

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2 years ago

The energy required to remove an electron from a neutral atom is known as its:

Otrada [13]

Answer:

Ionization energy

Explanation:

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3 years ago

What is the effect of temperature on the solubility of a solid in a liquid

krok68 [10]

For many solids dissolved in liquid water, the solubility increases with temperature.

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3 years ago

Read 2 more answers

(a) The original value of the reaction quotient, Qc, for the reaction of H2(g) and I2(g) to form HI(g) (before any reactions tak

Taya2010 [7]

Answer:

Here's what I get

Explanation:

Assume the initial concentrations of H₂ and I₂ are 0.030 and 0.015 mol·L⁻¹, respectively.

We must calculate the initial concentration of HI.

1. We will need a chemical equation with concentrations, so let's gather all the information in one place.

H₂ + I₂ ⇌ 2HI

I/mol·L⁻¹: 0.30 0.15 x

2. Calculate the concentration of HI

$Q_{\text{c}} = \dfrac{\text{[HI]}^{2}} {\text{[H$_{2}$][I$_{2}$]}} =\dfrac{x^{2}}{0.30 \times 0.15} = 5.56\\\\x^{2} = 0.30 \times 0.15 \times 5.56 = 0.250\\x = \sqrt{0.250} = \textbf{0.50 mol/L}\\\text{The initial concentration of HI is $\large \boxed{\textbf{0.50 mol/L}}$}$

3. Plot the initial points

The graph below shows the initial concentrations plotted on the vertical axis.

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3 years ago

A solution that contains a large amount of solute would be described as what

antiseptic1488 [7]

Answer:

A concentrated solution is one that has a relatively large amount of dissolved solute. A dilute solution is one that has a relatively small amount of dissolved solute.

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3 years ago