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kicyunya [14]
4 years ago
11

Which of these equations is balanced?

Chemistry
2 answers:
valkas [14]4 years ago
7 0
A. 3 H2SO4 +2Al ➡Al2 (SO4)3 +3 H2
tester [92]4 years ago
7 0
B. 2kcl+Pb (N0 ) -------KNO +PbCl
3 2. 3. 2
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Which element mo se na or br contains the most moles of atoms in a 1.0 gram sample?
Fittoniya [83]
To determine this, lets use the atomic mass for each element to determine the corresponding number of moles for a given mass of 1 g.

Mo: 95.94 g/mol
1 g/95.94 g/mol = 0.01042 moles Mo

Se: 78.96 g/mol
1 g/78.96 g/mol = 0.01266 moles Se

Na: 22.99 g/mol
1 g/22.99 g/mol = 0.0435 moles Na

Br: 79.9 g/mol
1 g/79.9 g/mol = 0.0125 moles Br

<em>Thus, the answer is Na.</em>
3 0
4 years ago
I need help on this, It’s due today. Please, anybody
Sholpan [36]

Answer:

1 = 252g, 2 = 2mL, 3 = 1.5mL, 4 = 3g, 5 = 225g, 6 = 0.92g/mL, 7 = 0.75g/mL, 8 = 0.71g/mL, 9 = 1.9mL, 10= 1.11mL, 11 = 76.9g

Explanation:

This problem is testing how well you can move around the equation D = m/v where D = Density (g/mL), m= mass of sample (g), v = volume of sample (mL).

4 0
3 years ago
What energy convertion happens when green plants use energy from the sun to make sugar?
mixer [17]
The energy conversion happening here is known as photosynthesis. Photosynthesis is a process where the leaves of a plant absorb water and carbon dioxide, then, using light energy from the sun, convert that into oxygen and sugar.
8 0
3 years ago
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How the proton H gradient is used to make ATP
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Answer:

The proton gradient produced by proton pumping during the electron transport chain is used to synthesize ATP. Protons flow down their concentration gradient into the matrix through the membrane protein ATP synthase, causing it to spin (like a water wheel) and catalyze conversion of ADP to ATP.

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DNA bases are attached to _____.
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sugar molecules......

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