Chemistry, 11.07.2021 05:10, breadwonders3738

2) If a brick has a length of 13.77 cm, a width of 8.50 cm, and a height of 5.12 cm: a) What is the volume of the brick?
b) If the brick has a mass of 895.3 g, what is its density?

Answers: 3

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Answers

answered: piperk19

a. 599 cm³

b. 1.49 g/cm³

Explanation:

A. Volume

Volume is the amount of space an object occupies. Since this is a brick, the object is a rectangular prism. The formula for the volume of a rectangular prism is the product of length, width, and height.

V= l *w*h

The brick's length (l) is 13.77 centimeters, the width (w) is 8.50 centimeters, and the height (h) is 5.12 centimeters. Substitute these values into the formula.

$V= 13.77 \ cm * 8.50 \ cm * 5.12 \ cm$

Multiply the numbers together.

$V= 117.045 \ cm^ 2* 5.12 \ cm$

$V= 599.2704 \ cm^3$

The original measurements have at least 3 significant figures, so our answer must have 3. For the number we calculated, that is the ones place. The 2 in the tenths place tells us to leave the 9 in the ones place.

$V \approx 599 \ cm^3$

$\bold {The \ volume \ of \ the \ brick \ is \ approximately \ 599 \ cubic \ centimeters}}$

2. Density

Density is the amount of matter in a specified space. The formula for density is mass over volume.

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

The mass of the brick is 895.3 grams and we just found the volume to be 599.2704 cubic centimeters. Substitute the values into the formula.

$d= \frac{895.3 \ g}{599 \ cm^3}$

Divide.

$d= 1.494657763 \ g/cm^3$

Round to three significant figures. For the number we calculated, that is the hundredth place. The 4 in the thousandth place tells us to leave the 9 in the hundredth place.

$d \approx 1.49 \ g/cm^3$

$\bold {The \ density\ of \ the \ brick \ is \ approximately \ 1.49 \ grams /cubic \ centimeters}}$

answered: Guest

that's just how they are

explanation:

you can't control another persons decisions, all you can do is ask that they respect yours. relationships are hard because you have to put the effort into making sure that another person feels seen, heard, and loved. as time goes on, it gets easier, you learn how to do these things without thinking. loving them becomes as easy as breathing, but every relationship will have fights, and sometimes it'll feel like you're drowning, but as long as you can talk it out and compromise, because that's truly what loving another person is, is compromise, then you'll be okay. movies and tv shows have glamorized and romanticized (pardon the pun) what a relationship would be like. real relationships aren't perfectly timed kisses in the rain, zero fights until one big one ends everything, 6 month anniversaries. real relationships are sleepy confused kisses when one person has to leave for work earlier than the other, real relationships are having small disagreements, real relationships are messy and confusing, real relationships is knowing that even if you're relationship may not last forever and this may not be the person you're going to spend the rest of your life with, that you love them, and you would do anything to see them happy. so yes, relationships are difficult, but so are many other things, relationships can be amazing but also stressful, and not just romantic i'm also talking about platonic relationships (although the primary example here was romantic) sometimes is best to leave friendships behind, so remember, always do whats going to you be happy in the long run.

answered: Guest

- both b and d.

-since b and d are the closest coastlines then that makes it the most affected.

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