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3 years ago

6

How are Celsius, Kelvin, and Fahrenheit scales similar? How are they different? Considering their differences, think of one scen

ario in which each scale is more convenient to use?

1 answer:

PIT_PIT [208]3 years ago

6 0

Answer:

they are similar becauze they measure temperature

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What is the percent composition by mass of sulfur in the compound MgSO4 (gram formula mass = 120 g/mol)?

slavikrds [6]

26.7% is the percent composition by mass of sulfur in a compound named magnesium sulfate. Explanation: Molar mass of compound = 120 g/mol.

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2 years ago

What is the name of the molecular compound CBra?

Fudgin [204]

Answer:

i think it is a Cobrotoxin

6 0

2 years ago

The volume of an automobile air bag was 66.8 L when inflated at 25 °C with 77.8 g of nitrogen gas. What was the pressure in the

Ray Of Light [21]

Answer:

$\large \boxed{\text{103 kPa}}$

Explanation:

We can use the Ideal Gas Law — pV = nRT

Data:

V = 66.8 L

m = 77.8 g

T = 25 °C

Calculations:

(a) Moles of N₂

$\text{Moles of N}_{2} = \text{77.8 g N}_{2} \times \dfrac{\text{1 mol N}_{2}}{\text{28.01 g N}_{2}} = \text{2.778 mol N}_{2}$

(b) Convert the temperature to kelvins

T = (25 + 273.15) K = 298.15 K

(c) Calculate the pressure

$\begin{array}{rcl}pV & =& nRT\\p \times \text{66.8 L} & = & \text{2.778 mol} \times \text{8.314 kPa$\cdot$ L$\cdot$K$^{-1}$mol$^{-1}\times$ 298.15 K}\\66.8p & = & \text{6886 kPa}\\p & = & \textbf{103 kPa}\end{array}\\\text{The pressure in the bag is $\large \boxed{\textbf{103 kPa}}$}$

3 0

2 years ago

I need help I’ll give you brainliest

Svetlanka [38]

Answer:

2 or 3 i think

Explanation:

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3 years ago

Read 2 more answers

The physical world around us behaves as it does partly because it’s made of a huge number of tiny molecules, each behaving rando

never [62]

I don't think that "Maxwell's demon" is possible to happen. Take for example a boiling water poured in a glass and cold water poured in the same glass. They each have different temperatures but when they are put together in the same container, the boiling water releases its energy and absorbs some coldness of the cold water and vice versa. In the end, the water temperature will be the average temperature of both types of water. Boiling water and cold water in the same container can never keep their original temperature. It just is not possible. Even if there is a glass partition to separate these waters, heat and coldness will still be transferred between the two through the glass partition.

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3 years ago