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svetoff [14.1K]
2 years ago
6

the mechanical advantage of a wheel and axle is the radius of the wheel divided by radius of the wheel divided by the radius of

the axle A, the wheel and axle are very close in size. on wheel B the radius of the wheel is much greater then the radius of the axle. which wheel and axle has the greater mechanical advantage?
Chemistry
2 answers:
denis-greek [22]2 years ago
7 0
B 6 ft 2 in. = _____ ft
Levart [38]2 years ago
5 0

Answer:

Wheel and axle B has the greater mechanical advantage. Dividing the radius of the wheel by the radius of the axle will give a larger number.

Explanation:

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Chemistry question! Please explain!
Ilya [14]
There are no numbers provided so I will try to explain the equation. If you want to find the percent error you would do theoretical (the number it’s supposed to be) minus experimental (the number you got in the experiment) over the theoretical value (same as the first one.) You must multiply this by 100 in order to show the actual percentage rather than very low decimals. You want the percent error to be as low as possible because the lower it is the less mistakes happened. Mistakes can include too much/less of solvent, solution, or the glassware wasn’t clean enough, and much much more.

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6 0
3 years ago
Starting from a 1 M stock of NaCl, how will you make 50 ml of 0.15 M NaCl?
WARRIOR [948]

Answer:

We need 7.5 mL of the 1M stock of NaCl

Explanation:

Data given:

Stock = 1M this means 1 mol/ L

A 0.15 M solution of 50 mL has 0.0075 moles NaCl per 50 mL

Step 2: Calculate the volume of stock we need

The moles of solute will be constant

and n = M*V  

M1*V1 = M2*V2

⇒ with M1 = the initial molair concentration = 1M

⇒ with V1 = the volume we need of the stock

⇒ with V2 = the volume we want to make of the new solution = 50 mL = 0.05 L

⇒ with M2 = the concentration of the new solution = 0.15 M

1*V1 = 0.15*(50)

V1 = 7.5 mL

Since 0.0075 L of 1M solution contains 0.0075 moles

50 mL solution will contain also 0.0075 moles but will have a molair concentration of 0.0075 moles / 0.05 L =0.15 M

We need 7.5 mL of the 1M stock of NaCl

6 0
2 years ago
We saw in the calorimeter experiment that the combustion of a fuel is exothermic. what can you then say about the formation of a
ankoles [38]

Answer:

This question appear incomplete

Explanation:

This question appear incomplete. However, fuel is formed through a natural phenomenon involving the conversion of large amount dead and decayed organisms (usually algae and zooplanktons) to combustible fuel through exposure to relatively high temperature and pressure (over millions of years) in the earth's crust. Thus, since this involves a sort of absorption of heat energy (from the earth's crust), it can be referred to be an endothermic reaction.

8 0
2 years ago
(20 Points!!!!!)
trasher [3.6K]

i am pretty sure it would be a chemical change so A

3 0
2 years ago
Read 2 more answers
Each molecule of table sugar, C12H22O11, contains
Delicious77 [7]
D, because C12 means there's 12 atoms of carbon. 
3 0
3 years ago
Read 2 more answers
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