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1 year ago

What is waste good for?

Chemistry

1 answer:

harkovskaia [24]1 year ago

6 0

A because that honestly just makes the most sense

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Need help with question please .. -20 points

san4es73 [151]

Answer:

B oklolol

$[tex]\purple{\rule{45pt}{7pt}}\purple{\rule{45pt}{999999pt}}[tex]$

8 0

1 year ago

True or False Photosynthesis and Cell Respiration are opposite reactions. Photosynthesis provides the molecules needed for cell

Bezzdna [24]

True but in more depth they both have the some same qualities in function but provide for each other when one makes oxygen, H2O, and energy and cellular respiration makes CO2 and glucose

6 0

2 years ago

Read 2 more answers

transition metal ions with partially filled D orbitals usually have color. based on your observations, which Solutions contain t

Yuliya22 [10]

Since transition metals with partially filled d orbitals have color when in solution. Therefore which ever solution has some color will likely contain a transition metal with a partially filled d orbital.
an example of this is solution with Cu²⁺ will have a blue tint to it.

5 0

2 years ago

Which phrase describes the molarity of a solution?

Elan Coil [88]

The answer is (3) moles of solute per liter of solution. That is what the definition of molarity of a solution means. The equation is concentration = mol number of solute/ volume of solution.

6 0

2 years ago

A sample of octane burns releasing 2290 J of heat to the surroundings, and the gases produced expands against a piston to do 560

dexar [7]

Answer: The internal energy change for the reaction is -2850 J

Explanation:

Sign convention of heat:

When heat is absorbed, the sign of heat is taken to be positive and when heat is released, the sign of heat is taken to be negative.

Sign convention of work:

Work done for expansion process is taken as negative and work done for compression is taken as positive.

According to the First law of thermodynamics,

$\Delta U=q+w$

where,

$\Delta U$ = internal energy

q = heat absorbed or released = -2290 J

w = work done = -560 J

Putting values in above equation, we get:

$\Delta U=(-2290)+(-560)\\\\\Delta U=-2850J$

Hence, the internal energy change for the reaction is -2850 J

4 0

2 years ago