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Degger [83]
3 years ago
6

What is the sum of 334.540 g and 198.9916 g to the correct significant figure?

Chemistry
1 answer:
slavikrds [6]3 years ago
5 0
The answer to the question is a
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Do Plant cells need to carry out Respiration? Explain
Sidana [21]

Answer:

yes

Explanation:

Although plants use photosynthesis to produce glucose, they use cellular respiration to release energy from the glucose.

3 0
4 years ago
Since density depends on the mass and volume of an object, we need both of these values combined in the correct way to solve for
alukav5142 [94]

Answer:

  7.86 g/cm³

Explanation:

  11.0 kg = 11,000 g

The density in g/cm³ is ...

  (11,000 g)/(1,400 cm³) = 7.86 g/cm³

7 0
3 years ago
Historically the troubadour was a ____.
eimsori [14]

Composer and performer of Old Occitan lyric poetryduring the High Middle Ages (1100–1350). Since the word troubadour is etymologically masculine, a female troubadour is usually called a trobairitz.


6 0
3 years ago
What do these observations tell you about the rate and direction of heat flow through each specific type of plastic?
Murljashka [212]

Answer:

Heat is something you can't control

Explanation:

Plastic is something you could control like moving it around

3 0
3 years ago
A galvanic cell whose cell reaction is 2Fe3+(aq) + Zn(s) → 2Fe2+(aq) + Zn2+(aq) has a cell potential of 0.72V. What is the maxim
sesenic [268]

Answer:

138.96kJ is the maximum electrical work

Explanation:

The maximum electrical work that can be obtained from a cell is obtained from the equation:

W = -nFE

<em>Where W is work in Joules,</em>

<em>n are moles of electrons = 2mol e- because half-reaction of Zn is:</em>

Zn(s) → Zn²⁺(aq) + 2e⁻

F is faraday constant = 96500Coulombs/mol

E is cell potential = 0.72V

Replacing:

W = -2mol*96500Coulombs/mol*0.72V

W = - 138960J =

<h3>138.96kJ is the maximum electrical work</h3>

<em />

5 0
3 years ago
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