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Grace [21]
3 years ago
14

Dr. Murrays science class recently read about an experiment that had surprising results. The decided to perform the experiment i

n their class, but they used more advanced methods. Their results
Chemistry
1 answer:
kow [346]3 years ago
4 0

The question is incomplete, the complete question is;

Dr. Murray's science class recently read about an experiment that had surprising results. They decided to perform the experiment in their class, but they used more advanced methods. Their results

must be completely different, but they are more reliable.

could be the same as before, or they could be completely different.

must be the same as the recorded results, but they are more reliable.

could be the same as the recorded results, or they must be inconclusive.

Answer:

could be the same as before, or they could be completely different.

Explanation:

Now we know that in carrying out a scientific research, there is such a thing as replication.

Replication means that other scientists in other places carry out the same experiments previously done and expect to obtain the same results as the first time the experiment was done.

However, this is not a case of replication because a different and more advanced method was used in the experiment. Once the methodology of the experiment has been changed, then the results could be the same or different. Hence the answer above.

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What does relative abundance mean
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3 years ago
When 4.41g of phosphoric acid (H3PO4) react with 9.25g of barium hydroxide, water and insoluble barium phosphate form. [T/I-7] a
AnnZ [28]

Answer:

2 H₃PO₄(aq) + 3 Ba(OH)₂(aq) ⇒ Ba₃(PO₄)₂(s) + 6 H₂O(l)

Explanation:

Let's consider the unbalanced equation that occurs when phosphoric acid reacts with barium hydroxide to form water and barium phosphate. This is a neutralization reaction.

H₃PO₄(aq) + Ba(OH)₂(aq) ⇒ Ba₃(PO₄)₂(s) + H₂O(l)

We will balance it using the trial and error method.

First, we will balance Ba atoms by multiplying Ba(OH)₂ by 3 and P atoms by multiplying H₃PO₄ by 2.

2 H₃PO₄(aq) + 3 Ba(OH)₂(aq) ⇒ Ba₃(PO₄)₂(s) + H₂O(l)

Finally, we will get the balanced equation by multiplying H₂O by 6.

2 H₃PO₄(aq) + 3 Ba(OH)₂(aq) ⇒ Ba₃(PO₄)₂(s) + 6 H₂O(l)

3 0
3 years ago
If a 50.0 g piece of glass is heated from 20.0°C to 40.0°C, how many joules of heat are added? The specific heat of glass is 0.5
Andrews [41]

Answer:

500J (joules)

Explanation:

since heat is is the product of mass, change in temperature, and specific heat, the solution can be found from the equation q = mcΔt, heat is 50 * .5 * 20 = 500J

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The lower a material’s viscosity is, the more likely it will flow like _________. water honey oil tar
expeople1 [14]
Viscosity is the resistance for liquids to flow. So the lower the viscosity, means the liquid does not have as much resistance to run or flow. So I believe it's water.
7 0
3 years ago
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