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Gelneren [198K]
3 years ago
8

Scientific theories and scientific laws are both based on extensive observations, experimentation, and reasoning. What is the pr

imary factor that distinguishes scientific laws from scientific theories?
A. Scientific laws have been observed without exception in specific conditions.
B. Scientific laws frequently change over time.
C. Scientific laws tend to be conceptual and rarely use mathematics.
D. Scientific laws are always true, even when conditions change.
Chemistry
2 answers:
valkas [14]3 years ago
7 0

Answer:

Scientific laws have been observed without exception in specific conditions.

Explanation:

study island :)

Andrews [41]3 years ago
6 0

Answer:

Explanation:

Scientific laws have been observed without exception in specific conditions.

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seropon [69]
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check the attached picture:

- The structure is in Meso form so both compound and its mirror image have the same structure (optically inactive)
 

3 0
4 years ago
I'm confused on whether it'd be biosphere or atmosphere going into geosphere
igor_vitrenko [27]

Answer:

I think its biosphere nd atmosphere

4 0
3 years ago
How much water needs to be added
Olegator [25]

Answer:

165 ml

Explanation:

We are given;

Initial volume; V_a = 55 ml

Initial molarity; M_a = 3 M

Molarity of desired solution; M_b = 0.75 M

Volume of desired solution; V_b = (55 + x) ml

Where x is the volume of water to be added.

To solve for V_b, we will use the equation ;

M_a•V_a = M_b•V_b

V_b = (M_a•V_a)/M_b

V_b = (3 × 55)/0.75

V_b = 220 mL

Thus;

(55 + x) = 220

x = 220 - 55

x = 165 mL

8 0
3 years ago
14. An enzyme-catalyzed reaction was carried out with the substrate concentration initially a thousand times greater than the Km
emmainna [20.7K]

Answer:

27 min

Explanation:

The kinetics of an enzyme-catalyzed reaction can be determined by the equation of Michaelis-Menten:

v = \frac{vmax[S]}{Km + [S]}

Where v is the velocity in the equilibrium, vmax is the maximum velocity of the reaction (which is directed proportionally of the amount of the enzyme), Km is the equilibrium constant and [S] is the concentration of the substrate.

So, initially, the velocity of the formation of the substrate is 12μmol/9min = 1.33 μmol/min

If Km is a thousand times smaller then [S], then

v = vmax[S]/[S]

v = vmax

vmax = 1.33 μmol/min

For the new experiment, with one-third of the enzyme, the maximum velocity must be one third too, so:

vmax = 1.33/3 = 0.443 μmol/min

Km will still be much smaller then [S], so

v = vmax

v = 0.443 μmol/min

For 12 μmol formed:

0.443 = 12/t

t = 12/0.443

t = 27 min

7 0
4 years ago
Question:
den301095 [7]

Answer: I think it’s 4

Explanation:

8 0
3 years ago
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