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NeTakaya
3 years ago
9

A large sample of solid calcium is crushed into smaller pieces for testing. Which two physical properties are the same for both

the large sample and one of the smaller pieces?
Chemistry
1 answer:
jarptica [38.1K]3 years ago
5 0
Lets go over what our properties are

-Mass is a measure of the amount of matter available. 
<span>
-Density is the ratio of mass to volume. Density is determined to be a physical object</span>

<span>-Volume is the amount of space occupied by the object. </span>

<span>-Solubility is the amount of a substance required to form a saturated solution with a specific amount of solvent at a specified temperature. 
</span>
-Mass is the same size and weight of an object for the most part which cannot be the same for a bigger or smaller object. Which means density cannot either since density has a direct correlation with mass. Volume is usually the size occupied at the current time. This means it cannot be the same for a large and small object. Note that! Then we have solubility which is the amount required or needed but since you are just crushing the solid it would wind up still being the same amount.

-With this all put together we can say your answer is probably Solubility and Desnity.
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Balanced equation of magnesium metal and hydrochloric acid
Setler79 [48]

The balanced chemical equation is,

2Mg+2HCl→2MgCl+H2↑

6 0
3 years ago
True or false: the smaller the difference between the average experimental value and the correct (true) value the greater the ac
mel-nik [20]

Answer:

True

Explanation:

The accuracy level is usually determined by the difference between the experimental and correct value. It is important to note that the smaller the difference between the average experimental value and the correct (true) value, the more accurate it is.

When the difference is large then it means the accuracy level is low and not up to the required standard.

5 0
3 years ago
Please help me I want to be sure I will mark you
defon

Answer:

Probably A.

Explanation:

Its either A or C. A is more probable imo

7 0
2 years ago
Read 2 more answers
Is a gold necklace a element, compound, or a mixture
Akimi4 [234]

Answer:

It would be an element my dear.

--------------------------------------------------------------------------------------------

Pure gold is an element. That is, it is not a combination of other materials. However, gold used in jewelry is usually a “mixture”, called an alloy mixed with other metals to harden it, to change the color as in copper makes the pink or rose gold that is currently enjoying great polarity.

3 0
2 years ago
If you burned 4.10 x 10^24 molecules of butane (C4H10), what mass of ethane did you burn?
LenKa [72]

Answer:

Explanation:

Molar mass of C4H10 = 12x 4 + 1 x 10= 48+ 10=58g.

Also note that molar mass of a substance is equivalent to Avogadro's number (6.02 X 10^-23)

Hence,

6.02 X 10^-23 molecules of ethane was burned in 58g of ethane

So, 4.10 X 10^24 molecules of ethane will burn in xg of ethane.

Cross multiply:

6.02 X 10^-23x = 58 X 4.10 X 10^24

6.02 X 10^-23x = 2.378 X 10 ^26

Dividing both sides by the coefficient of 'x'

x = 2.378 X 10^26/(6.02X 10^-23)

x = 3.95 X10^48g approximately

x = 4.0 X 10^48g

Or

Mole = number of elementary

particless / Avogadro's number

Where,

No of elementary particles= 4.10 X 10^24 molecules

Avogadro's number= 6.02 x 10^-23

Therefore,

Mole = 4.10 X 10^24/ (6.02 X 10^-23)

= 6.81 X 10^ 46 moles.

But mole = mass / molar mass

Mass = mole x molar mass

where

Molar mass of C4H10 = 12x 4 + 1 x 10= 48+ 10=58g/mol

Mass= 6.81 X 10^46 X 58

= 3.95 X 10^48g approximately

= 4.0 X 10^ 48g.

Thanks

8 0
2 years ago
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