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2 years ago

Is a compound a mixture

Chemistry

2 answers:

scoray [572]2 years ago

6 0

yes because your mixing different things together .<3

Thepotemich [5.8K]2 years ago

4 0

No, a compound is two elements that have been chemically combined to form something different. A mixture is two things that have been mixed together without creating a chemical change

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A glass column is filled with mercury and inverted in a pool of mercury. The mercury column stabilizes at a height of 729 mm abo

harkovskaia [24]

The atmospheric pressure will be:

The pressure of the atmosphere resulting from the mercury column is 0.959 atm

What is atmospheric pressure?

The force that an object experiences from the weight of the air above it per unit area are known as atmospheric pressure.

Given: Height of mercury column = 729 mm Hg

To find: The pressure of the atmosphere

Calculation:

The atmospheric column resulting from the mercury column is calculated as follows:

1 atm =760 mm Hg

So, we can convert the 729 mm Hg to atm, and we get

Atmospheric pressure = 729 x 1 atm / 760 = 0.959 atm

Learn more about atmospheric pressure here,

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5 0

1 year ago

The value of the rate constant for a gas phase reaction can be changed by increasing the A. temperature of the reaction vessel.

prohojiy [21]

Answer:

temperature of the reaction vessel

Explanation:

temperature of the reaction vessel

3 0

2 years ago

Suppose you needed a 0.0250 M sodium thiosulfate solution to conduct 6 titrations. Explain how you would make up this solution u

AysviL [449]

Explanation:

According to the law of dilution,

$M_{1}V_{1} = M_{2}V_{2}$

The given data is as follows.

$M_{1}$ = 0.4782, $V_{1}$ = ?

$M_{2}$ = 0.025 , $V_{2}$ = 250 mL

Hence, we will calculate the value of $V_{1}$ as follows.

$V_{1} = \frac{M_{2} \times V_{2}}{M_{1}}$

= $\frac{0.025 \times 250}{0.4782}$

= 13.07

Thus, we can conclude that we need 13.07 mL 0.4782 M sodium thiosulfate solution using pipette.

4 0

3 years ago

There are three naturally occurring isotopes of the hypothetical element hilarium 45Hi, 46Hi, and 48Hi. The percentages of these

den301095 [7]

Answer:

46.761g/mol

Explanation:

Given parameters:

Element = Hilarium , Hi

Isotopes: Hi- 45, Hi-46 and Hi- 48

Natural abundance of Hi-45 = 18.3%

Hi-46 = 34.5%

Hi-48 = 47.2%

Unknown:

Atomic weight of naturally occurring Hilarium = ?

Solution:

Isotopes have been studied extensively by mass spectrometry. The method is used to determine the proportion/percentage/fraction by which each of the isotopes of an element occurs in nature. The proportion is called geonormal abundance. From this we can calculate the atomic weight of an element.

We can use the expression below to find this value:

Atomic weight = m₄₅α₄₅ + m₄₆α₄₆ + m₄₈α₄₈

m is the atomic mass of each isotope and α is the abundance

Atomic weight = (45 x $\frac{18.3}{100}$ ) + (46 x $\frac{34.5}{100}$ ) + (48 x $\frac{47.2}{100}$ )

Atomic weight of Hi = 8.235 + 15.870 + 22.656 = 46.761g/mol

6 0

3 years ago

Draw the structure of 4-bromo-2-iodo-5,6-dimethylnonane.

Lana71 [14]

The first step is to focus on the parent carbon chain:nonane. This indicates a carbon chain with 9 carbon atoms. From here, on the 4th carbon from one side, place a Br functional group; on the 2nd carbon, place a I functional group; on the 5th and 6th carbon, place a CH₃ (methyl) functional group to each. Lastly, complete the bonding with H atoms. The structure is shown in the attached picture.

7 0

3 years ago