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hichkok12 [17]
2 years ago
12

A scientist was asked to test the effect of a new vitamin for rats. His

Chemistry
1 answer:
Hoochie [10]2 years ago
8 0

Answer:

D. The data supported the hypothesis

Explanation:

The data shows that rats fed a normal diet with the addition of vitamins gained a higher average weight gain in the period of 3 months, compared to rats fed a normal diet. This supports the scientists' hypothesis of "Young rats that had vitamins added to their food would gain weight faster than young rats fed a normal diet."

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When a 4.2 gram sample of mercury (Il) oxide, HgO is decomposed into its elements by •
Usimov [2.4K]

Hg = (3.2 : 4.2) x 100% = 76.19%

O = (1 : 4.2) x 100% = 23.81%

7 0
3 years ago
Hey I need help with this element, compound, and mixtures worksheet
Alika [10]

We should describe a little bit the legend.

A - Element - we should have circles with same color and not bonded together (argon gas).

B - Compound - here we may have circles with same or different color bonded together (water or oxygen which is a diatomic molecule).

C - Mixture of elements - circles with different colors not not bonded together (mixture of noble gases).

D - Mixture of compounds - circles with same or different color bonded together but we should see two or more types of connectivity between circles (mixture of water and ethanol).

E - Mixture of elements and compounds - circles with same or different color bonded together mixed with circles with same color and not bonded together (a mixture between oxygen which is a diatomic molecule and noble gas like argon).

Now we may answer the question:

1) B

2) C

3) D

4) D

5) A

6) B

7) B

8) E

9) E

10) D

11) B

12) D

13) D

14) D

15) D

7 0
3 years ago
can someone please tell my why my answer is incorrect and what the correct answer is? I don’t understand how this is wrong
forsale [732]

Answer:

you were correct from my point of view but you could add a few zero's

Explanation:

i don't see how the was wrong

33000 Grams/Milliliters (g/mL) = 33,000,000 Milligrams/Milliliter (mg/mL)

1 g/mL = 1,000 mg/mL

1 mg/mL = 0.001000 g/mL

6 0
4 years ago
5 points ) Which of the following is a benefit of using email to communicate at work ? a) You can express yourself in a limited
Aloiza [94]

Answer:

C

Explanation:

7 0
3 years ago
At PO2 = 40 mm Hg, which statement about the saturation of either myoglobin (Mb) or hemoglobin (Hb) is true? At PO2 = 40 mm Hg,
Damm [24]

Answer:

At this partial pressure of oxygen, Mb would be almost completely saturated but Hb would not.  

Explanation:

The oxygen saturation curves for Mb and Hb are quite different. The curve for Mb is hyperbolic while that for Hb is sigmoidal.

Mb reaches oxygen saturation before Hb.

Thus, at a partial pressure of 40 mmHg, Mb is almost completely saturated but Hb is not.

4 0
3 years ago
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