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2 years ago

A substance that flows is called a

Chemistry

2 answers:

Serggg [28]2 years ago

8 0

Answer:

In physics, a fluid is a liquid, gas, or other material that continuously deforms (flows) under an applied shear stress, or external force.

Explanation:

They have zero shear modulus, or, in simpler terms, are substances which cannot resist any shear force applied to them.

iris [78.8K]2 years ago

7 0

Answer: a fluid???

Explanation: Sorry if it is wrong but i think that is right

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What is the relationship between the concentration of particles in a solution and the solution’s vapor pressure? As solute conce

kap26 [50]

Answer:

As solute concentration increases, vapor pressure decreases.

Step-by-step explanation:

As solute concentration increases, the number of solute particles at the surface of the solution increases, so the number of solvent particles at the surface decreases.

Since there are fewer solvent particles available to evaporate from the surface, the vapour pressure decreases.

C. and D. are wrong. The vapour pressure depends only on the number of particles. It does not depend on the nature of the particles.

5 0

3 years ago

Read 2 more answers

Nicotine, a component of tobacco, is composed of C, H, and N. A 7.875-mg sample of nicotine was combusted, producing 21.363 mg o

Gnom [1K]

Answer: The empirical formula for the given compound is $C_5H_7N$

Explanation:

The chemical equation for the combustion of compound having carbon, hydrogen, and nitrogen follows:

$C_xH_yN_z+O_2\rightarrow CO_2+H_2O$

where, 'x', 'y' and 'z' are the subscripts of carbon, hydrogen and nitrogen respectively.

We are given:

Mass of $CO_2=21.363mg=21.363\times 10^3g=21363g$

Mass of $H_2O=6.125g=6.125\times 10^3g=6125g$

We know that:

Molar mass of carbon dioxide = 44 g/mol

Molar mass of water = 18 g/mol

For calculating the mass of carbon:

In 44 g of carbon dioxide, 12 g of carbon is contained.

So, in 21363 g of carbon dioxide, $\frac{12}{44}\times 21363=5826.27g$ of carbon will be contained.

For calculating the mass of hydrogen:

In 18 g of water, 2 g of hydrogen is contained.

So, in 6125 g of water, $\frac{2}{18}\times 6125=680.55$ of hydrogen will be contained.

Now we have to calculate the mass of nitrogen.

Mass of nitrogen in the compound = (7875) - (5826.27 + 680.55) = 1368.18 g

To formulate the empirical formula, we need to follow some steps:

Step 1: Converting the given masses into moles.

Moles of Carbon = $\frac{\text{Given mass of Carbon}}{\text{Molar mass of Carbon}}=\frac{5826.27g}{12g/mole}=485.52moles$

Moles of Hydrogen = $\frac{\text{Given mass of Hydrogen}}{\text{Molar mass of Hydrogen}}=\frac{680.55g}{1g/mole}=680.55moles$

Moles of Nitrogen = $\frac{\text{Given mass of nitrogen}}{\text{Molar mass of nitrogen}}=\frac{1368.18g}{14g/mole}=97.73moles$

Step 2: Calculating the mole ratio of the given elements.

For the mole ratio, we divide each value of the moles by the smallest number of moles calculated which is 0.0154 moles.

For Carbon = $\frac{485.52}{97.73}=4.96\approx 5$

For Hydrogen = $\frac{680.55}{97.73}=6.96\approx 7$

For Nitrogen = $\frac{97.73}{97.73}=1$

Step 3: Taking the mole ratio as their subscripts.

The ratio of C : H : N = 5 : 7 : 1

Hence, the empirical formula for the given compound nicotine is $C_5H_7N_1=C_5H_7N$

7 0

3 years ago

Which sequence describes the result of increasing the number of gas particles in a container?

geniusboy [140]

Answer:

Explanation:

Adding more gas particles to a set volume will increase the number of collisions, thus increasing collision force and pressure.

6 0

3 years ago

Which phrase describes a plateau?

Rina8888 [55]

Answer:

I think it's surface cut by streams

8 0

3 years ago

Read 2 more answers

Calculate the force applied to a car with mass of 1200 kg that has an acceleration of 2 m/s/s.

bearhunter [10]

Answer:

2,400

Explanation:

F = m × a

F = 1200 × 2

F = 2,400

6 0

3 years ago