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Ostrovityanka [42]
3 years ago
11

Helpe pls I will mark brainlest​

Chemistry
1 answer:
olya-2409 [2.1K]3 years ago
4 0

Answer:

What is the question needing to be answered?

Explanation:

Usually with a scientific hypothesis, you ask the question in an if, then statement. For example: If it rains outside, then the ground will be wet. It's kind of like a cause and effect statement.

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Calculate the theoretical yield of 1-bromobutane; base your calculations on using 1.0 g of 1-butanol (as the limiting reagent).
Tomtit [17]

C₄H₉OH + HBr = C₄H₉Br + H2O

Δmole of alcohol gives 1 mole of bromobutanol

HBr is in excess, so the yield of the product is limited by the alcohol

Wt. of 1 butanol = 18

Molar mass of the butanol = 74.12 g/mole

Moles of the alcohol = 1/74.12 = 0.01349 moles

So, moles of bromobutane = 0.01349 moles

Molar mass of C₄H₉Br = 137.018 g/moles

So, theoretical mass of bromobutane is = 0.01349 × 137.0.18

= 1.85 g


6 0
4 years ago
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An acid increases the hydroxide ion concentration of water.<br>True<br>or<br>False
ASHA 777 [7]
False is the answer!
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3 years ago
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If two elements are from the
Vladimir79 [104]

Answer:

The element from Group 13.

Explanation:

Following trends of the periodic table, atomic radius of the elements increase going down from the right side and decrease on its way up diagonally to the left. (sry if u can't understand me)

7 0
3 years ago
Describe the term molarity as it relates to an acid or base.
algol13
It's essentially another word for concentration, of the acid. e.g.  "the molarity of the acid is 3moldm^-3"
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Which of the following pairs of elements is most likely to form an ionic compound?
love history [14]

Answer:

Option A = sodium and bromine

Explanation:

Sodium is metal while bromine is non metal. The bond formed between them is ionic.

Ionic bond:

Ionic bond is formed by the complete transfer of electron form metal to non metal.

Sodium is belongs to the group one while bromine is present in group seventeen. The number of valance electron of bromine are seven. Bromine require one electron to complete the octet, while sodium lose its one valance electron to gain noble gas stable electronic configuration. Thus sodium transfer its electron to bromine and gain positive charge and bromine gain its electron and form negative ion. The forces present between them are electrostatic forces which are very strong.

Na⁺Br⁻

4 0
3 years ago
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