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Vinil7 [7]
3 years ago
10

Which is the statement that answers the question posed at the start of the investagation?​

Chemistry
2 answers:
natka813 [3]3 years ago
8 0

Answer:

igggu;£?90; fl d cfhsbndbfvf gfss ,d d h dgd vfvfvdvv

xeze [42]3 years ago
8 0

Answer:

hypothesis serves

Explanation:

Hypothesis serves as scientific guess which answer the scientific problem. In the conduct of experimentation, hypothesis might be rejected or it might be accepted depending on the result of the experiment.Aug 11, 2020

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How to prepare 250.00 ml of approximately 1.0 m hcl solution from the 2.5 m hcl solutio?
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To solve this we use the equation, 

M1V1 = M2V2

where M1 is the concentration of the stock solution, V1 is the volume of the stock solution, M2 is the concentration of the new solution and V2 is its volume.

2.5 M x V1 = 1.0 M x .250 L

<span>V1 = 0.10 L or 100 mL of the 2.5 M HCl solution is needed

Hope this helps.</span>
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A balloon contains 5.5 L of air at 303 K and 101.3 kPa. After an hour, the air inside the balloon cools to 297 K. What is the fi
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Lead has an atomic number of 82. Which statement describes all neutral atoms and ions of lead?
IRINA_888 [86]

The neutral atom of lead must have 82 protons while ions can have b or less than 82.

The atomic number of an element is the number of protons in the nucleus of the element.

Also, for neutral atoms, the number of protons equals the number of electrons.

In ionic form, the number of protons/electrons of an atom may vary and be different from that of the neutral form.

Positive charges mean that the ion has less proton than its neutral version while negative charges mean that it has more electrons than its neutral version.

Thus, the neutral atom of lead will contain an equal number of protons as the electrons while its ionic form can have more or less than 82 protons.

More on atoms can be found here: brainly.com/question/803445?referrer=searchResults

6 0
3 years ago
Can Hydrocyanic acid be a Lewis Acid? What about a Lewis Base?
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HCN is a Bronsted acid; it can dissociate into H+ and CN-. And H+ is a Lewis acid because it accepts election pairs. ... In order for H+ and CN- to be formed, Hydrogen in HCN donates its electrons to Carbon. So in this sense, Hydrogen is the lewis base and Carbon is the lewis acid.

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