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svet-max [94.6K]
3 years ago
12

What are three of Leonardo divinci's contributions to science?

Chemistry
1 answer:
Zielflug [23.3K]3 years ago
5 0
<span> hydraulic pumps, flying machines, and war machines.</span>
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1. What volume is required to contain 100.0 mol O2 at STP?​
Colt1911 [192]

Answer:

The volume is 2238,6 L

Explanation:

We use the formula PV=nRT. The conditions STP are: 1 atm of pressure and 273K of temperature:

PV=nRT ---> V=(nRT)/P

V= 100 mol x 0,082 l atm/K mol x 273K/ 1 atm

<em>V=2238, 6L</em>

5 0
3 years ago
What reagents can be used to test for unsaturation of hydrocarbons?​
REY [17]

Answer:

Bromine test is used to test the unsaturation of hydrocarbons.

Explanation:

3 0
2 years ago
What kind of data does regional climate mainly collect and concentrate on?
hram777 [196]

Answer:

Climate, atmosphere, and land

Explanation:

Some of the data collected include air chemistry, temperature, precipitation, cloud cover, and wind speed. Instruments carried on balloons and wind profiling radar provide observations from the surface to more than 10 miles high.

8 0
2 years ago
Read 2 more answers
Đốt cháy hoàn toàn một amin đơn chức thu được CO2 và H2O theo tỉ lệ nCO2 : nH2O = 6 : 7. Vậy CT amin đó là
Sav [38]
Câu trả lời là Anlyamin

7 0
2 years ago
Will the calculated Molarity of NaOH be too high or too low or unaffected if the following happen: when you answer the question,
vodomira [7]

Answer:

Explanation:

The result will be affected.

The mass of KHP  weighed out was used to calculate the moles of KHP weighed out (moles = mass/molar mass).

Not all the sample is actually KHP if the KHP is a little moist, so when mass was used to determine the moles of KHP, a higher number of moles than what is actually present would be obtained (because some of that mass was not KHP but it was assumed to be so. Therefore, there is actually a less present number of moles than the certain number that was thought of.

During the titration, NaOH reacts in a 1:1 ratio with KHP. So it was determined that there was the same number of moles of NaOH was the volume used as there were KHP in the mass that was weighed out. Since there was an overestimation in the moles of KHP, then there also would be an overestimation in the number of moles of NaOH.

Thus, NaOH will appear at a higher concentration than it actually is.

7 0
3 years ago
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