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4 years ago

HELP ASAP***

Chemistry

2 answers:

Alchen [17]4 years ago

8 0

D...........................

boyakko [2]4 years ago

6 0

D more particles in space= higher concentration, increasing reaction rate overall

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Give the formula

madreJ [45]

Hello!!! I would like to give you my answer!!!
<span>%error= (-890kJ-0.07kJ)/(-890kJ)x100 = 110.02%
I hope this helps!!! :-D</span>

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4 years ago

The amount of heat absorbed when 5.5g of aluminum is heated from 25.0c to 95.0c the specific heat of aluminum is 0.897J/(gc)

NemiM [27]

Answer:

Q=21.99 kJ

Explanation:

4 0

3 years ago

How does the chemical structure of water change when it changes state?

Bad White [126]

When the water is heated, the water molecules bounce around and spread out.
When the water is normal, they are pretty close-knit but still flow around.
When the water is frozen, they are frozen in place and do not move.
I hope this helped :)

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3 years ago

for each pair of compounds below , identify the one that would be expected to have more ionic character.explain you choice. (a)N

Tju [1.3M]

Answer:

a)NaBr

b)FCl

Explanation:

To identify which compound is more ionic we will calculate the electronegativity difference.

A) NaBr

Electronegativity of Na = 0.93

Electronegativity of Br = 2.96

Electronegativity difference = 2.96- 0.93 = 2.03

HBr

Electronegativity of H = 2.2

Electronegativity of Br = 2.96

Electronegativity difference = 2.96 - 2.2 = 0.76

NaBr have more ionic character because of large electronegativity difference.

B) BrCl

Electronegativity of Cl = 3.16

Electronegativity of Br = 2.96

Electronegativity difference = 3.16 - 2.96 = 0.2

FCl

Electronegativity of F = 3.98

Electronegativity of Br = 2.96

Electronegativity difference = 3.98 - 2.96 = 1.02

FCl have more ionic character because of large electronegativity difference.

8 0

3 years ago

Larry bought 12 1/2 pounds of candy to share with his friends. If he gave each friend 2 1/2 pounds of candy, how many friends di

arlik [135]

Answer:

The answer to your question is: 5 friends

Explanation:

Data

Larry bought 12 1/2 pounds of candy

gave each friend 2 1/2 pounds

number of friends = ?

Process

Convert mixed fractions into improper fractions

12 1/2 = (24 + 1) / 2 = 25 /2

2 1/2 = (4 + 1) / 2 = 5/2

Divide the fractions

$\frac{25}{2} / \frac{5}{2}$

= $\frac{50}{10}$

= 5

Larry gave candies to 5 of his friends

4 0

3 years ago