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3 years ago

Why are little pieces of cardboard lighter than a whole piece of cardboard?

2 answers:

7 0

I use small cardboard boxes for organizing drawers, etc,---also break them down and use it in the garden to kill weeds, and I add some to my compost. ... side to one edge that's somewhat shorter than the magazine, to enable one to remove one magazine without removing the whole box from the shelf.

bogdanovich [222]3 years ago

7 0

This is because little pieces of cardboard is the same thing as splitting the weight, so splitting the weight of it means the total of all the pieces won't be exactly the same as a whole cardboard.

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In your own words right a definition of earth core

Rasek [7]

The Earth's core is the part of Earth in the middle of our planet. It has a solid inner coreand a liquid outer core.

7 0

3 years ago

Read 2 more answers

A student inflates a balloon with helium then places it in the freezer. The student should expect

g100num [7]

Answer:

The frozen balloon shrank because the average kinetic energy of the gas molecules in a balloon decreases when the temperature decreases. This makes the molecules move more slowly and have less frequent and weaker collisions with the inside wall of the balloon, which causes the balloon to shrink a little.

Explanation:{ BOOM}***

6 0

3 years ago

Please help me out with these questions please!!!

iogann1982 [59]

Answer to the first one is that they are brittle. This is not true because they have strong bonds

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3 years ago

What is the resulting pressure when a sample of gas at 25°C in a 500 ml balloon

Natali5045456 [20]

Answer:

233.56 torr

Explanation:

We'll begin by converting celsius temperature to Kelvin temperature. This can be obtained as follow:

T(K) = T(°C) + 273

Initial temperature (T₁) = 25 °C

Initial temperature (T₁) = 25 °C + 273

Initial temperature (T₁) = 298 K

Final temperature (T₂) = 75 °C

Final temperature (T₂) = 75 °C + 273

Final temperature (T₂) = 348 K

Next, we shall convert 2 L to mL. This can be obtained as follow:

1 L = 1000 mL

Therefore,

2 L = 2 L × 1000 mL / 1 L

2 L = 2000 mL

Finally, we shall determine the resulting pressure. This can be obtained as follow:

Initial temperature (T₁) = 298 K

Initial volume (V₁) = 500 mL

Initial pressure (P₁) = 800 torr

Final temperature (T₂) = 348 K

Final volume (V₂) = 2000 mL

Final pressure (P₂) =?

P₁V₁/T₁ = P₂V₂/T₂

800 × 500 / 298 = P₂ × 2000 / 348

400000 / 298 = P₂ × 2000 / 348

Cross multiply

P₂ × 2000 × 298 = 400000 × 348

P₂ × 596000 = 139200000

Divide both side by 596000

P₂ = 139200000 / 596000

P₂ = 233.56 torr

Therefore, the resulting pressure is 233.56 torr

3 0

3 years ago

Determine whether an aqueous solution of each of the following salts will be acidic, basic, or neutral. Ba3(PO4)2 NaCN

Andru [333]

Answer: Both the salts are basic salts.

Explanation:

Salts are formed when an acid reacts with a base during a neutralization reaction.

When a strong acid and a weak base reacts, it leads to the formation of acidic salt.

When a strong base and weak acid reacts, it leads to the formation of basic salt.

When a strong acid and strong base or weak acid and weak base reacts, it leads to the formation of neutral salts.

$Ba_3(PO_4)_2$ is a salt which is formed by the combination of $H_3PO_4\text{ and }Ba(OH)_2$ . Phosphoric acid is a weak acid and barium hydroxide is a strong base. So, the given salt is a basic salt.

$NaCN$ is a salt which is formed by the combination of $HCN\text{ and }NaOH$ . Hydrogen cyanide is a weak acid and sodium hydroxide is a strong base. So, the given salt is a basic salt.

Hence, both the salts are basic salts.

6 0

4 years ago