Answer:
If the colors in a chromatography are able to dissolve and travel up a paper wick, what kind of chemical property do the colors have when mixed with rubbing alcohol?
(You may need to search "Chemical Properties")
Answer:
CH4 +2 O2 — CO2 +2 H2O
Now we see that for 1 mol i.e. 16 grams of methane results in 1 mol of CO2 or 44 grams of CO2.
That means for 3 moles of methane , we will obtain 3 moles of CO2 OR for 48 (3*16) grams of CO2 , we will obtain (44*3) 132 grams of CO2 .That's it….
Explanation:
hey .dude hope the answer was helpful ....
Answer:
The correct answer is option B.
Explanation:
Significant figures :These are figures in a number which expresses the value of the magnitude of a quantity to a specific degree of accuracy is known as significant digits.
Significant digits in the volume measurement 0.010 mL are:
= 2 significant figures
- All non-zero numbers are always significant.
- All zero’s preceding the first integers are never significant.
- All zero’s after the decimal point are always significant.
Answer:
A. Scientists from different countries can more easily share and compare data from their experiments
Explanation:
The use of a universal system of measurement allows a searcher or a group of searchers share knowledge achieved more easily with the rest of the scientist community.
On the other hand, to say that a method is more accurate than others, they need to be compared first.
Answer:
The balance reaction is
2Pb(NO3)2 ----》4NO2+2PbO+O2
hence the value of a,b,c,d are 2,4,2,1 respectively!
