Question

This is not really "earth science", but I need help and I didn't see my correct subject.

Answer 1

Type your question. Welcome to OpenStudy!

Answer 2

Hello and thank you. I have this study guide to do and for some reason I do not understand any of it. can you help walk me through it or something?

Answer 3

I don't want the answers I just wanna know what to do. . .Thank you for any help. . .

Answer 4

Do you have a specific question about it?

Answer 5

Not really. I don't understand any of it, but I knw you probably won't go over all of it so can you go over question 1 in part a, b and c?

Answer 6

Calculate density when given a means to determine a substance’s mass and volume.

Answer 7

Density=Mass/Volume

Answer 8

A student determines that a piece of an unknown material has a mass of 5.854 g and a volume of 7.57 cm3.  What is the density of the material?

Answer 9

Since you already have the mass and volume you are solving for the density.

Answer 10

d=m/v
d=5.854g/7.57cm3

Answer 11

so the answer to that is 0.7733 to the 3rd power?

Answer 12

The answer is 0.7733 g/cm3

Answer 13

This is not to the third power. cm3 is a unit meaning centimetres cubed

Answer 14

Do you understand?

Answer 15

ah ok. I was wondering what to do with grams and cenimeters.

Answer 16

So you understand now.

Answer 17

yes

Answer 18

In science lab you are given a rectangular shaped solid made from some synthetic (manmade) substance. Its dimensions are 3.5 cm by 2.4 cm by 14.6 cm. If this substance masses 20 g, what is its density in g/cm3? (DA)

Answer 19

Tell me what you get for this one.

Answer 20

d=m/v

Answer 21

Are you stuck?

Answer 22

I'm kinda slow when it comes to math. I'm not stuck yet just working slow. . . -_-

Answer 23

k :-)

Answer 24

3.5 x 2.4 x 14.6 = 122.64 This is your volume.
The mass is listed as 20g.

Answer 25

ok answer is 6.132 g/cm3

Answer 26

From there divide 122.64 by 20.
The answer should be: 6.132g/cm^3

Answer 27

That's right! Are you ready to move on?

Answer 28

yes!

Answer 29

b. Predict formulas for stable binary ionic compounds based on balance of charges.

Answer 30

1. Find the charge for each element based on what group it is in. (Group 1= +1 charge)

Answer 31

Do you know what elements this question is talking about?

Answer 32

It starts with an H if I remember but I don't remember if it was helium or somthing elese...-_-

Answer 33

it wasn't helium I don;t think. I will look it up

Answer 34

H is Hydrogen.

Answer 35

For this question you will need the Periodic Table.

Answer 36

ah ok I knew it wasn't helium

Answer 37

ok I have one pulled up

Answer 38

Does the Hydrogen have a + or - sign next to it.

Answer 39

neither I am looking at several different periodic tables and none of them have either. where on the table is it suppose to be at ?

Answer 40

ah wait ok. The question says (1= +1) so Hydrogen must be + since there is only a 1 beside it, but with that being said, why is there no negetives on the periodic table if possitives exist???