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mihalych1998 [28]
3 years ago
12

What is the crucial element of a good hypothesis?

Chemistry
1 answer:
photoshop1234 [79]3 years ago
4 0
The qualities of a good hypothesis are: 1) Logically consistent with other theories and data 2) Have explanatory power 3) Be empirically testable 4) Similar hypothesis is the better hypothesis.
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Which of the following chemical reaction are redox reactions: PCl3 + Cl2 ® PCl5 Cu + 2AgNO3 ® Cu(NO3)2 + 2Ag
zvonat [6]

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8 0
3 years ago
Please help me I can describe a real-world situation in which opposite quantities combine to make zero.
ozzi
A hydrogen atom has 0 charge because its two constituents are oppositely charged; and understand p + q as the number located a distance |q| from p, in the positive or negative direction depending on whether q is positive or negative.
6 0
3 years ago
Read 2 more answers
If 5.0 g of copper metal reacts with a solution of silver nitrate, how many grams of silver metal are recovered?
sukhopar [10]

Answer:

16.9g

Explanation:Cu+2AgNO3→2Ag+Cu(NO3)2  

Cu will likely have a +2 oxidation state. It is higher in the activity series than Ag, so it is a stronger reducing agent and will reduce Ag in a displacement reaction. Then you need to balance the coefficients knowing than NO3 is -1 and Ag is +1.

Then to calculate the theoretical yield you need to compare moles of the reactants:

m(Cu)=5g

M(Cu)=63.55

n(Cu)=5/63.55=0.0787

By comparing coefficients you require twice as much silver: 0.157mol

n(Ag)=0.157

M(Ag)=107.86

m(Ag)=0.157x107.86=16.9g

Hence, the theoretical yield of this reaction would be 16.9g

3 0
3 years ago
The name of an oxyacid has the suffix -ous acid. What is the suffix of the oxyanion?
Dima020 [189]

Answer:

-ate

Explanation:

6 0
3 years ago
Which of the following cannot be classified as a mixture
REY [17]

Answer:

B) Rubbing alcohol

Explanation:

It is a solution

4 0
1 year ago
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