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Sav [38]
3 years ago
8

PLEASE HELP!!!!

Chemistry
1 answer:
shtirl [24]3 years ago
6 0
1) d

2) b because the independent variable is the thing you change/control in an experiment

3) c because the dependent variable is the thing being measured in an experiment

4)hmm it might be d, as c and a are both correct as different sized feeders would make it an unfair test and different types of food would as well

5) c

6) a

7) b obviously because if he activated them at different times then the ones activated last would have an advantage

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Well, it could be B or D but I would say B.

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The structure of an organelle is usually fit to its function so it is most likely B.

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Which of the following is true regarding a voltaic (or galvanic) cell? a) It can only be used with hydrogen. b) It produces elec
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Answer:

b) It produces electrical current spontaneously.

Explanation:

Cells capable of converting chemical energy to electrical energy and vice versa are termed Electrochemical cells. There are two types of electrochemical cells viz: Galvanic or Voltaic cells and Electrolytic cells. Voltaic cell is an elctrochemical cell capable of generating electrical energy from the chemical reaction occuring in it.

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3 years ago
Hands moving on a battery-operated clock is an example of what kind of
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The C is right answer
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3 years ago
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The molar solubility of magnesium carbonate is 1.8 × 10–4 mol/l. What is ksp for this compound?
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3.2 × 10⁻⁸

Explanation:

Let's consider the solution of magnesium carbonate.

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We can relate the molar solubility (S) with the solubility product (Ksp) using an ICE chart.

         MgCO₃ ⇄ Mg²⁺(aq) + CO₃²⁻(aq)

I                             0                0

C                          +S              +S

E                            S                S

The Ksp is:

Ksp = [Mg²⁺] × [CO₃²⁻] = S × S = S² = (1.8 × 10⁻⁴)² = 3.2 × 10⁻⁸

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4 years ago
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CAS number:

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