What is gravity?????????

2 answers:

6 0

A strong, invisible force called gravity pulls everything on Earth down. Gravity keeps you and all the things that are around you from floating up into the sky. An example of gravity in action is when you jump from the ground. Gravity is the force that pulls you back down.

SashulF [63]4 years ago

5 0

Gravity is a force that can used draws everywhere, or everything to the Earth's center.

Hope it helped you.

-Charlie

Thanks!

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What are the basis of making symbols????

telo118 [61]

Answer:

1/ Using the first letter of the name of the elements.

2/ If the name of two or more elements begins with the same letter,the second letter of their name is also taken with first letter.

3/ Symbols are made by using the letters of the name of elements in other languages also.

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4 years ago

The ester below can be separated into phenol and an acetate salt, via saponification: heating the ester with a strong base, such

erastovalidia [21]

I found a similar question online which will help me answer your incomplete question. To make it easier, show all the elements of the compound given. It is shown in the second picture attached.

a.) The formula for unsaturation number is shown in the 3rd picture attached. Following this,
n = 8
m = 2(8) + 2 + 0 + 0 - 0 = 18
Thus,
x = Unsaturation number = (18 - 8)/2 = 5
<em>The unsaturation number is 5.</em>

b.) The molar mass of C is 12.01 g/mol; H is 1 g/mol; O is 16 g/mol. So, the molecular weight is:
Molecular weight = 12.01(8) + 8(1) + 2(16) = 136.08 g/mol
<em>The molecular weight of the ester is 136.08 g/mol.</em>

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4 years ago

Tim and Jim finished their lab experiment earlier than their classmates. What should they do while they wait for the others to f

Alisiya [41]

The answer to your question is,

C. Look over their answers to the lab questions and check for errors.

-Mabel <3

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4 years ago

Give the measurement following sig fig rules for tools. Do not forget the unit after your number measurement.

In-s [12.5K]

Answer:

Explanation:

You are not really helped by what is hold the liquid. Beakers and cylinders come on a lot of sizes. I hate to be crabby about things like that, but you really need to be aware that the question is slightly flawed (not your fault).

The beaker, you'd be like to get 1 sig digit. You have to be awfully careful about claiming more. So the and is 50 mL, but that mL is a guess and the 50 is not totally accurate, but what would you say the second digit is? 48 or 47? You don't really know. Maybe even 49.

The graduated cylinder is a little better. Read the bottom of the meniscus (the bottom of the 1/2 bubble). I think you can get 2 sig digs., so the answer is 36 mL. But everything also depends on what you have been told.

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3 years ago

Sulfur and fluorine react to form sulfur hexafluoride according to the reaction shown here. How many mol of F2 are required to r

Harlamova29_29 [7]

B. 6.45 mol F2

The mole ratio here is 3 mol F2 for every 1 mol S. Multiply 2.15 mol S by 3 to get the mol of F2 needed.

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3 years ago