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2 years ago

What happened when bromine reacted with aluminum?

Chemistry

1 answer:

-Dominant- [34]2 years ago

4 0

Answer:

The reaction begins and builds up heat. This heat causes the aluminum to melt and float on top of the liquid bromine. Wherever the two elements meet, sparks, heat, and light are given off.

Explanation:

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All of the following metals replace hydrogen of an acid except.........

trapecia [35]

Answer:

Explanation:

Below hydrogen on reactivity table.

hydrogen would rather give up its electrons.

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3 years ago

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SVEN [57.7K]

Answer:

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3 years ago

Read 2 more answers

2.643 grams of potassium butanoate (KCH3(CH2)2CO2 ) is fully dissolved in 50.00 mL of water, which is carefully transferred to a

lara [203]

Answer:

The pH of the solution is 4.69

Explanation:

Given that,

Mass of potassium = 2.643 grams

Weight of water = 50.00 mL

Weight of HCl=100.00 ml

Mole = 0.120 M

We know that,

$KCH_{3}(CH_{2})_{2}CO_{2}$ is a basic salt.

Let's write it as KY.

The acid $HCH_{3}(CH_{2}CO_{2})$ would become HY.

We need to calculate the moles of KY

Using formula of moles

$moles\ of\ KY=\dfrac{m}{M}\times1000$

$moles\ of\ KY=\dfrac{2.643}{126}\times1000$

$moles\ of\ KY=20.97\ m\ mole$

The reaction is

$KY+HCl\Rightarrow HY+ KCl$

The number of moles of KY is 20.98 m

initial moles = 20.98

Final moles $m=20.98-0.120\times100= 8.98$

We need to calculate the value of pKa(HY)

Using formula for pKa(HY)

$pKa_{HY}=-log Ka$

$pKa_{HY}=-log(1.5\times10^{-5})$

$pKa_{HY}=4.82$

We need to calculate the pH of the solution

Using formula of pH

$pH=pKa+log(\dfrac{[KY]}{[KH]})$

Put the value into the formula

$pH=4.82+log(\dfrac{8.98}{12})$

$pH=4,69$

Hence, The pH of the solution is 4.69

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3 years ago

13. Describe briefly how you figured out what the name of the element is:

zloy xaker [14]

Answer:
13) between the nucleus, there is a proton and electron number given, (looking at the periodic table, it gives you the name of the element)

14) an ion, in any element has a POSITIVE charge no matter what.. the numbers depend on what it element the ion is with..

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2 years ago

Make an oblique drawing (page 9)

Olin [163]

Good luck folk :)!!!!!!!!

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2 years ago