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3 years ago

An alkyne with six carbon atoms per

Chemistry

1 answer:

Ahat [919]3 years ago

7 0

Explanation:

C6H10

12(6) + 1(10)

= 72 + 10 = 82

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Which TWO of the following options are TRUE about atomic mass and mass number?

Citrus2011 [14]

Answer:

E - Atomic mass is calculated by weighted atomic average using all the isotope data available.

G - Mass number is equal to the sum of protons and electrons in an atom.

Explanation:

Take an element

$\\ \bull\sf\longmapsto _{25}Mg^{12}$

Mass no is 25 and atomic no is 12.

7 0

3 years ago

if a gas sample has a pressure of 761 mmhg at 0.00°c by how much does the temperature have to decrease to lower the pressure to

Nady [450]

<h3>Answer:</h3>

272.43 K or -0.718°C

<h3>Explanation:</h3>

We are given;

The initial pressure,P1 as 761 mmHg

Initial temperature, T1 as 0.00°C which is equivalent to 273.15 K

Final pressure as 759 mmHg

We are required to calculate the final temperature;

According to pressure law, the pressure of a gas and absolute temperature are directly proportional at constant volume.

That is; Pα T

Therefore, at varying pressure and temperature,

$\frac{P1}{T1}=\frac{P2}{T2}$

To get final temperature;

$T2=\frac{P2T1}{P1}$

$T2=\frac{(759 mmHg)(273.15K)}{761 mmHg}$

$T2=272.43K$

Therefore, the final temperature will be 272.43 K or -0.718°C

6 0

3 years ago

Which of the following statements sounds correct to you?

ololo11 [35]

A is correct vegetables cannot be like acids or alkaline because they foods

6 0

3 years ago

Who was the scientist that coined the term cell?

Doss [256]

Robert Hooke was the scientist that coined the term cell

5 0

3 years ago

Oil (specific gravity of 0.80 and a viscosity of 0.000042 lbf/ft2) at a temperature of 80 F flows through two separate pipes 10

Elenna [48]

Answer:

The velocity of flow in 10in pipe is 4.16 ft/s.

Explanation:

Given that

Specific gravity = 0.8

Viscosity =0.00042 $lbf/ft^2$

For pipe 1

$V_1=6 ft/s,d_1=12\ in$

For pipe 1

$V_2,d_1=10\ in$

If we assume that flow in the both pipe is laminar

For laminar flow through circular pipe

$\dfrac{\Delta P}{L}=\dfrac{32V\mu }{d^2}$

So same pressure drop we can say that

$\dfrac{V_1 }{d^2_1}=\dfrac{V_2}{d^2_2}$

$\dfrac{6}{12^2}=\dfrac{V_2}{10^2}$

$V_2=4.16 ft/s$

So the velocity of flow in 10in pipe is 4.16 ft/s.

6 0

4 years ago