Define equivalent weight of an element

Answers

Answer 1

Answer: Equivalent weight, in chemistry is referred to the quantity of a substance that exactly reacts with another substance in a particular reaction.

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Which ion was formed by providing the second ionization energy to remove an electron?

Answers

The correct answer for the question above is S2- (Sulfide.) S2- ion was formed by providing the second ionization energy to remove an electron. S2- is actually an inorganic anion of Sulfur. This anion contributes no color to any objects and is classified as a strong base.

Answer:

It is Ca2+

Explanation:

What type of reaction takes place when atoms or molecules rearrange to form new substances?

Answers

This is a chemical reaction.

Hydrocarbons are separated from each other by a process called cracking distillation. a. True
b. False

Answers

True, cracking distillation is one process used to break hydrocarbons into smaller and more useful parts. This is achieved by using high temperatures and pressures with a catalyst. The most common catalyst used are the zeolites.

Answer:

Correct answer is FALSE I just tested it and it came out right.

Explanation:

You are walking in Paris alongside the Eiffel Tower and suddenly a croissant smacks you on the head and knocks you to the ground. From your handy dandy tourist guidebook you find that the height of the Eiffel Tower is 300.5 m. If you neglect air resistance, calculate how many seconds the croissant dropped before it tagged you on the head.

Answers

Neglecting air resistance (that is, if you and the Eiffel Tower were in a giant vacuum chamber), the bagel would take 7.804 s to hit you on the head.

I will assume that you are 1.8 m tall, so the distance the bagel falls before it hits you on the head is

300.5 m - 1.8 m = 298.7 m

One of the important equations relating distance and acceleration is

s = v₀ +½at², where

s = distance,
v₀ = initial velocity,
a = acceleration, and
t = time.

I also assume that the person at the top of the tower didn't throw the bagel down at you, so v₀ = 0.

a is the acceleration due to gravity, which is 9.8099 m·s⁻² in Paris.

s = v₀ + ½ at²

298.7 m = 0 + ½ × 9.8099 m·s⁻² × t²

298.7 = 4.9050 t² s⁻²

t² = $(298.7 \text m)/( 4.9050 \text s^(-2))$ = 60.898 s²

t = $\sqrt{60.898 s^(2)}$ = 7.804 s

The time taken for the croissant to hit you on the head assuming you are 1.5 m tall is 7.73 s

Considering the question given above, your height was not stated.

Let your height be 1.5 m

Thus, the height of the Eiffel Tower to your head will be:

Height (h) = (Total height of tower) – (Your assumed height)

Total height of tower = 300.5 m

Your assumed height = 1.5 m

Height (h) = 300.5 – 1.5

Height (h) = 299 m

Finally, we shall determine the time taken for the croissant to hit you on the head.

Height (h) = 299 m

Acceleration due to gravity (g) = 10 m/s²

Time (t) =?

H = ½gt²

299 = ½ × 10 × t²

299 = 5 × t²

Divide both side by 5

$t^(2) = (299)/(5)\n\nt^(2) = 59.8$

Take the square root of both side

$t = √(59.8)$

t = 7.73 s

Therefore, the time taken for the croissant to hit you on the head assuming you are 1.5 m tall is 7.73 s

Learn more: brainly.com/question/19168584

How many muffins can the above recipe produce if 60 ml is required for each muffin?

Answers

To determine how many muffins can be produced with the given recipe, where 60 ml of batter is required for each muffin, you need to calculate the total volume of batter produced and then divide it by the volume required for each muffin.

The recipe produces a total of 2 liters of batter (2000 ml). Now, divide this total batter volume by the volume required for each muffin (60 ml per muffin):

Total muffins = Total batter volume (ml) / Volume per muffin (ml)
Total muffins = 2000 ml / 60 ml/muffin ≈ 33.33 muffins

Since you cannot have a fraction of a muffin, you can produce approximately 33 muffins with the given recipe.

The liquid-vapor equilibrium of a substance can be disturbed by cooling the substance.TRUE

FALSE

Answers

The statement "The liquid-vapor equilibrium of a substance can be disturbed by cooling the substance" is false. The substance must be heated in order to get the vapor phase of that substance.

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