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elixir [45]
3 years ago
11

Multiple choice chemistry quiz​

Chemistry
1 answer:
umka2103 [35]3 years ago
3 0

Answer:

none of the choices

0.05 ÷ 750 = 6.666

To calculate the Molar Concentration, we will find the molar concentration by dividing the moles by liters of water used in the solution. For example, the acetic acid here is completely dissolved in 1.25 L of water. Then divide 0.1665 moles by 1.25 L to get the molar concentration, which will be 0.1332 M

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What is the difference between being imaginative in doing science and doing psuedoscience?
Dovator [93]
Being imaginative in doing science is using your knowledge and creativity to make innovative ideas, while psuedoscience is using sources that are not true and do not use actual science. Example being ads that say "Wow you will not believe what how this oil cured cancer!".
4 0
3 years ago
How can watching fish decrease heart rate ?
Leokris [45]

Answer:

Explanation:

Whe it dies

3 0
3 years ago
Complete combustion of 8.10 g of a hydrocarbon produced 25.9 g of CO2 and 9.27 g of H2O. What is the empirical formula for the h
balu736 [363]

CxHy     +  O2    -->    x CO2     +    y/2  H2O

 

Find the moles of CO2 :     18.9g  /  44 g/mol   =    .430 mol CO2   = .430 mol of C in compound

Find the moles of H2O:      5.79g / 18 g/mol     =     .322 mol H2O   = .166 mol of H in compound

 

Find the mass of C and H in the compound:

                             .430mol  x 12  =  5.16 g C

                              .166mol  x 1g   = .166g H   

 

When you add these up they indicate a mass of 5.33 g for the compound, not 5.80g as you stated in the problem.

Therefore it is likely that either the mass of the CO2 or the mass of H20 produced is incorrect (most likely a typo).

In any event, to find the formula, you would take the moles of C and H and convert to a whole number ratio (this is usually done by dividing both of them by the smaller value).

8 0
4 years ago
HELP ME PLSSSS USATP
melamori03 [73]

Answer:

Apple tree is a producer

Bacteria is a decomposer

Rabbit is a herbivore

Brown bear is a herbivore

Lion is a omnivore

Pig is a carnivore

Mushroom is a decomposer

Grass is a producer

Explanation: .

7 0
3 years ago
If 3.0 moles of A and 4.0 moles of B react according to the hypothetical reaction below, how many moles of the excess reactant w
blondinia [14]
1 mol of A should be left over
5 0
3 years ago
Read 2 more answers
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