The main difference between heat and temperature is the temperature is solely dependent on what

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Answer 1

Answer: Heat is the total energy of molecular motion in a substance while temperature is a measure of the average energy of molecular motion in a substance.

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Propane and oxygen react according to the equation: C₃H₈(g) + 5O₂(g) → 3CO₂(g) + 4H₂O(g).How many grams of water can be produced from the complete combustion of 2.0 moles of C₃H₈(g)? a. 144.0 b. 82.0 c. 8.0 d. 44.8 e. 22.4

I have to write a 150 word paragraph or two that describes at least three everyday things that exist or occur because of science. I also have to make sure i use examples. I don't have a clue where to start ??? PLEASE help!

Answers

You can do something like natural disasters and explain why they happen

What is the volume, in cubic meters, of an object that is 0.23 m long, 7.5 m wide, and 6.5 m high?

Answers

Answer:

Explanation: Multiply all the numbers together

Formula for Volume : L x W x H

Butyric acid is responsible for the odor in rancid butter. A solution of 0.25 m butyric acid has a ph of 2.71. What is the ka for the acid?

Answers

Answer:

Ka = 1.5 -10^-5

Explanation:

Step 1: Data given

Molarity of the solution = 0.25 M

pH = 2.71

Step 2 The equation

C3H7COOH + NaOH ⇆ C3H7COONa + H2O

Step 3: Calculate pKa

pH = (pKa-log[acid])/2

2pH = pKa -log[acid]

pKa = 2pH +log[acid]

⇒with pH = 2.71

⇒with log[acid] = -0.60

pKa=2*2.71 -0.60

pKa = 5.42 - 0.60

pKa = 4.82

Step 4: Calculate Ka

pKa = -log(Ka)

Ka = 10^-4.82

Ka = 1.5 -10^-5

A package of aluminum foil is 63.2 yd long, 11 in. wide, and 0.00035 in. thick. If aluminum has a density of 2.70 g/cm³, what is the mass, in grams, of the foil?

Answers

Answer:

Mass of aluminium foil = 387.57_g

Explanation:

density of aluminium foil 2.70 g/cm³,

1_yd = 91.44_cm

1_in = 2.54_cm

Length of aluminum foil = 63.2_yd = 5779.008_cm

Width of aluminium foil = 11 in = 27.94_cm

Thickness of aluminium foil = 0.00035_in. = 0.000889_cm

Volume of aluminium foil = length × width × thickness = 5779.008_cm × 27.94_cm × 0.000889_cm = 143.54_cm^3

Mass of aluminium foil = (volume of aluminium foil) × (density of aluminium foil) = 143.54_cm³ × 2.70 g/cm³ = 387.57_g

Final answer:

To find the mass of the aluminium foil, calculate the volume and multiply it by the density. The mass of the foil is 0.3878 grams.

Explanation:

To find the mass of the aluminium foil, we need to calculate the volume and then multiply it by the density. First, let's convert the dimensions to the same unit. The aluminium foil is 63.2 yd long, which is equivalent to 190.4 ft. The width is 11 in, which is 0.92 ft, and the thickness is 0.00035 in, which is 2.92e-5 ft.

The volume of the foil can be calculated by multiplying the length, width, and thickness.

V = (190.4 ft) * (0.92 ft) * (2.92e-5 ft).

This gives us a volume of 5.0634e-3 cubic feet.

Next, we need to convert the volume to cubic centimetres because the density is given in g/cm³.

There are 28.3168 cubic centimetres in one cubic foot, so the volume in cm³ is

5.0634e-3 * 28.3168 = 0.1433 cm³.

Finally, we can calculate the mass by multiplying the volume by the density.

Mass = 0.1433 cm³ * 2.70 g/cm³ = 0.3878 grams.

So, The mass of the foil is 0.3878 grams.

Learn more about Mass of aluminium foil here:

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Based on the Periodic Table, explain why Na and Khave similar chemical properties

Answers

The Group 1 elements, which include lithium (Li), sodium (Na) and potassium (K) are also known as the alkali metals. They all have one electron in the outer shell and so they have similar properties.

What did other investigators find based off Stanley Miller's 1953 primordial soup experiment? A.
That water turned into various types of gases found in the earth's early atmosphere.

B.
That amino acids, fats, and nucleic acids might have formed in the waters of the past.

C.
That nitrogen gases, hydrogen gas, methane, and ammonia were formed in the waters of the past.

D.
That water turned into amino acids and fat, but nucleic acids were caused by lightning.

Answers

ok i'm not really sure I guess is b

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