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RideAnS [48]
3 years ago
8

During all chemical reactions, mass, energy and charge are

Chemistry
1 answer:
Oduvanchick [21]3 years ago
4 0
<span>conserved. if its absorbed then there will be no reaction.</span>
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When are conservation efforts most effective? a. Conservation efforts are most effective when multiple groups cooperate. b. Cons
alexandr402 [8]
Conservation efforts most effective if <span>Conservation efforts are most effective when multiple groups cooperate. The answer is letter A. The rest of the choices do not answer the question above</span>
7 0
4 years ago
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1. Calculate the mass (g), of 4.5 atoms of oxygen.<br> I
konstantin123 [22]

Answer

thus, 4 moles of oxygen gas (O2) would have a mass of 128 g.

3 0
3 years ago
The ΔHcomb value for anethole is -5539 kJ/mol. Assume 0.840 g of anethole is combusted in a calorimeter whose heat capacity (Cal
bonufazy [111]

Answer:

Final temperature of calorimeter is 25.36^{0}\textrm{C}

Explanation:

Molar mass of anethole = 148.2 g/mol

So, 0.840 g of anethole = \frac{0.840}{148.2}moles of anethole = 0.00567 moles of anethole

1 mol of anethole releases 5539 kJ of heat upon combustion

So, 0.00567 moles of anethole release (5539\times 0.00567)kJ of heat or 31.41 kJ of heat

6.60 kJ of heat increases 1^{0}\textrm{C} temperature of calorimeter.

So, 31.41 kJ of heat increases (\frac{1}{6.60}\times 31.41)^{0}\textrm{C} or 4.76^{0}\textrm{C} temperature of calorimeter

So, the final temperature of calorimeter = (20.6+4.76)^{0}\textrm{C}=25.36^{0}\textrm{C}

3 0
4 years ago
Can somebody plz answer this question only in 1-2 sentences! That would be great thanks so much :)
lbvjy [14]

Pure substances are substances which are homogenous in nature. They either consists of atoms of 1 kind or molecules of 1 kind. Atoms are seen in elements, where as molecules are seen in compounds like Acids, Bases, etc.

They mostly have fixed properties like boiling and melting points and are uniform in nature. :D

4 0
3 years ago
Electron transport is the process by which ________. Multiple Choice fatty acids break apart to form acetyl-CoA NADH + H+ and FA
Serggg [28]

Answer:

Electron transport is the process by NADH + H+ and FADH2 are converted to NAD+ and FAD, donating electrons and hydrogen ions to oxygen

Explanation:

3 0
4 years ago
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