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3 years ago

How many grams are present in a sample of aluminum?

Chemistry

1 answer:

MrMuchimi3 years ago

5 0

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You have 28.5 g of iron shot that has a volume of 3.60 mL. From this information, calculate the density of iron.

laila [671]

Answer:

$\boxed {\boxed {\sf \rho \approx 7.917 \ g/mL}}$

Explanation

Density can be found by dividing the mass by the volume.

$\rho=\frac{m}{v}$

We know the iron sheet has a mass of 28.5 grams and the volume is 3.60 milliliters.

$m= 28.5 \ g \\d= 3.60 \ mL$

Substitute the values into the formula.

$\rho=\frac{28.5 \ g}{ 3.60 \ mL}$

Divide.

$\rho = 7.91666667 \ g/mL$

Let's round to the nearest thousandth.

The 6 in the ten-thousandth tells us to round the 6 to a 7.

$\rho \approx 7.917 \ g/mL$

The density of iron is about <u>7.917 grams per milliliter.</u>

8 0

2 years ago

Arrange the colors of visible light, green, red, and blue, in order of increasing wavelength.

lukranit [14]

Answer: The increasing wavelength of colors:

Red > Green > Blue

Explanation:

Wavelength: This is the property of wave which includes the distance between two consecutive crests or trough. This is denoted by the Greek letter Lambda and it is found by dividing the velocity of the wave with its frequency.

Wavelength of colours are

Violet: 400 - 420 nm

Indigo: 420 - 440 nm

Blue: 440 - 490 nm

Green: 490 - 570 nm

Yellow: 570 - 585 nm

Orange: 585 - 620 nm

Red: 620 - 780 nm

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2 years ago

What is the total number of hydrogen atoms in a molecule of heptyne?

Step2247 [10]

Answer:

Explanation:

alkyne formula is CnH2n-2

heptyne = 7

6 0

2 years ago

PLEASE HELP MY TEACHER IS GOING TO SEE ME AFTER CLASS

Crazy boy [7]

Answer:

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Explanation:

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2 years ago

In the reaction 4AI+_O2 2AI2O3, what coefficient should be placed in front of the O2 to balance the reaction?

Olegator [25]

Answer: 3

Explanation: I took the k12 quiz

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2 years ago