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3 years ago

Kate gathered three boxes of the same size made of different materials; glass, clear

Chemistry

1 answer:

kirza4 [7]3 years ago

5 0

Answer:

Explanation:

False.

No. The temperature inside the container is a dependent variable. It depends on what the box is made of.

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Paul went to his friend's 2 km from his house, he used his bike and took him 9 minutes.

damaskus [11]

The average speed : 3.07 m/s

<h3>Further explanation</h3>

Given

d1 = 2 km

t1 = 9 min

d2 = 1.5 km

t2 = 10 min

Required

The average speed

Solution

Average speed = total distance : total time

total distance :

= d1+d2

= 2+1.5

=3.5 km

total time :

= t1+t2

= 9 min + 10 min

= 19 min

Average speed :

= 3.5 km : 19 min

= 0.184 km/min

= 3.07 m/s

8 0

3 years ago

2. When a drop of my pumpkin spice latte accidentally falls into the sploam, the substance begins to glow, then my room is fille

labwork [276]

Chemical because the first thing disappeared and changed into something completely different. Because you got something new from what you started with, it is chemical.

Idk why its pumpkin spice latte but I'm not going to judge. I prefer drinking bleach.

4 0

3 years ago

(b) Once the ionic solid has dissolved, the anion that is formed is able to react as a base, with water as the acid. Write the n

Marrrta [24]

Answer:

b C₂H₃O₂⁻ + H₂O ⇄ HC₂H₃O₂ + OH⁻

e HC₂H₃O₂ + H₂O ⇄ H₃O⁺ + C₂H₃O₂⁻

f ka<<1

g. Weak acid molecules and water molecules

Explanation:

The water molecule could act as a base and as an acid, a molecule that have this property is called as amphoteric.

b The salt NaC₂H₃O₂ is dissolved in water as Na⁺ and C₂H₃O₂⁻. The reaction of the anion with water is:

C₂H₃O₂⁻ + H₂O ⇄ HC₂H₃O₂ + OH⁻

Where the C₂H₃O₂⁻ is the base and water is the acid.

e. The reaction of HC₂H₃O₂ (acid) with water (base), produce:

HC₂H₃O₂ + H₂O ⇄ H₃O⁺ + C₂H₃O₂⁻

f. As the acetic acid (HC₂H₃O₂) is a week acid, the dissociation in C₂H₃O₂⁻ is not complete, that means that ka<<1

g. The ka for this reaction is 1,8x10⁻⁵, that means that there are more weak acid molecules (HC₂H₃O₂) than conjugate base ions. Also, the water molecules will be in higher proportion than hydronium ions.

I hope it helps!

4 0

3 years ago

The amount of carbon dioxide (in pounds per 15,000 cubic miles) released by a certain SUV depends on its fuel efficiency accordi

Shtirlitz [24]

Answer:

30 miles per gallon.

Explanation:

See picture

When the amount of carbon is plotted based on efficiency, the following graph is obtained (see image)

when looking at the graph, it can be seen that the point of lowest emission is presented with the maximum possible efficiency, 30 miles per gallon and this value is 10400 pounds per 15000 cubic miles.

$W=32x^{2}-2080x+44000$

5 0

3 years ago

Write the name and formulas of the products that would form when hydrochloric acid, HCl, and sodium hydroxide, NaOH, react.

OverLord2011 [107]

The correct answer is sodium chloride. NaCl. Also known as table salt.
I hope this helps you.

6 0

3 years ago