1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Mkey [24]
3 years ago
15

What do you know about magnets?

Chemistry
1 answer:
natali 33 [55]3 years ago
3 0

Answer:

They attract, that they are inside our Earth and they make magnetic shield that protect us

You might be interested in
The reaction of 4.8g of sulfur and 5.4g aluminum yields 4.5g Al2S3. 3S+2AL-->Al2S3 Determine the percent yield of Al2S3.
Goshia [24]

Answer:

59.9% is the percent yield for the 4.5 g of produced Al₂S₃

Explanation:

Let's determine the reaction:

3S  +  2Al  →  Al₂S₃

First of all, let's determine the limiting reactant. We need to convert the mass to moles:

4.8 g /32.06g/mol = 0.150 moles of S

5.4 g / 26.98 g/mol = 0.200 moles of Al

3 moles of S react to 2 moles of Al

Then, 0.150 moles of S may react to (0.150 . 2)/3 = 0.1 ,moles of Al

We have 0.200 moles and we only have 0.1. As we have excess of Al, this is the excess reactant. In conclussion, the limiting reagent is S.

2 moles of Al react to 3 moles of S

Then 0.2 moles of Al may react to (0.2 . 3) /2 = 0.3 moles of S. (We only have 0.150 moles)

Let's go to the product, 3 moles of S can produce 1 mol of Al₂S₃

Then 0.150 moles of S, may produce (0.150 . 1) /3 = 0.05 moles.

We convert moles to mass to determine the thoretical yield:

0.05 mol . 150.15g /mol =  7.50g

Percent yield = (Produced yield/Theoretical yield) . 100

% = (4.5g / 7.5g) . 100 = 59.9%

8 0
3 years ago
During the formation of a chemical bond, _________ must be transferred or shared between atoms to satisfy the octet rule. A) pro
ehidna [41]

Answer:

I think it's A or D im not sure which one..

3 0
3 years ago
Write balanced complete ionic equation for MgS(aq)+CuCl2(aq) = CuS(s)+MgCl2(aq)
oee [108]
<span>The balanced chemical ionic equarion of MgS(aq)+CuCl2(aq) = CuS(s)+MgCl2(aq) would be as follows:

</span><span>Mg2+ + S2- + Cu 2+ + 2 Cl- ==> CuS + Mg2+ + 2 Cl-

Therefore, the net equation would be:

</span><span>Cu 2+ + S 2-  ===> CuS 
</span><span>
Hope this helps.


</span>
8 0
3 years ago
Read 2 more answers
Describe any evidence that a chemical reaction occurred when you added 6 m hcl to the solution of sodium acetylsalicylate, also
irina1246 [14]

The evidence that a chemical reaction occurred is can be change in color , formation of a precipitate , Here in the case when 6 m HCl to the solution of sodium acetylsalicylate, the formation of precipitate that is of aspirin takes places that can be taken as a evidence that a reaction is occured. The reaction can be seen in the image attached.

3 0
3 years ago
5 uL of a solution is equal to<br> how many nanoliters?
Ksju [112]

Answer:

5000 nL

Explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • Muscles work in _____ so when other muscles contract the other ___
    13·1 answer
  • Which of these properties is TRUE for water?
    6·2 answers
  • What's the balanced equation for cellular respiration?
    12·1 answer
  • Describe how the phases of the moon depend on the positions of the earth and the moon brainly
    9·2 answers
  • A student tests two solutions with the same acid-base indicator. If the two solutions have different hydroxide ion concentration
    7·2 answers
  • Salt dissolves easiest in
    9·2 answers
  • For the following chemical reaction, if 40.0 grams of O2 are completely reacted, how many grams of CO2 will be produced?
    10·1 answer
  • From these four cycles which are water cycle, carbon cycle, nitrogen cycle, and phosphorus cycle which cycle has more nutrients
    7·1 answer
  • La etiqueta de una bebida transparente con un ligero toque anaranjado indica que contiene aga con un 15 porciento de zumo de nar
    15·1 answer
  • • 1. An object has a mass of 570g and a volume of 2280ml. Calculate its<br> density. 250 kg/m3
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!