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3 years ago

An element that is likely to have this property is; A. bromine B. carbon C. sodium D. tellurium ?

Chemistry

2 answers:

Ann [662]3 years ago

5 0

I really would go with D, i think that would be the correct answer!
hope that this helps you, Good-bye! =)

vladimir2022 [97]3 years ago

4 0

The answer is D. Most common semiconducting materials are crystalline solids. Amorphous and liquid semiconductors are also known to be.

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Webb has calculated the percent composition of a compound. How can he check his result?

fenix001 [56]

Webb has calculated the percent composition of a compound. He can check his result by adding them to see if they equal up to 100. Why? Well, percent composition tells the quantity of elements with 100 as a base of total amount. This means that it will have to add to 100 to check the result. You would add up all of the values of percent composition of elements to see if they equal 100, and if they do, the results are accurate.

Your final answer: Webb can check his result by seeing if they add up to 100, considering that is the base total quantity.

7 0

1 year ago

When CaCO3(s) decomposes into CaO +CO2, the reaction is called?

liberstina [14]

$\qquad \qquad\huge \underline{\boxed{\sf Answer}}$

This reaction is called decomposition reaction, furthermore it can be said to be decomposition of limestone.

The balanced chemical equation for the reaction is ~

$\qquad \sf \dashrightarrow \: CaCO_3 = CaO + CO_2$

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2 years ago

When silver coins are found in ancient shipwrecks,they are coated with a black crust. What question could you ask to help you de

leonid [27]

It went under a physical change because it (1) changed color. (2) changed form.

8 0

2 years ago

A 0.100 M solution of bromoacetic acid (BrCH2COOH) is 13.2% ionized. Calculate [H+]? Calculate BrCH2COO^ - ? Calculate BrCH2COOH

Natali [406]

Answer: The concentration of hydrogen ion and bromoacetate ion is 0.0132 M and 0.0132 M resepectively and that of bromoacetic acid is 0.0868 M

Explanation:

We are given:

Molarity of bromoacetic acid = 0.100 M

Percent of ionization = 13.2 %

The chemical equation for the ionization of bromoacetic acid follows:

$BrCH_2COOH\rightarrow BrCH_2COO^-+H^+$

1 mole of bromoacetic acid produces 1 mole of bromoacetate ion and 1 mole of hydrogen ion

Molarity of hydrogen ion = 13.2 % of 0.100 = $\frac{13.2}{100}\times 0.100=0.0132M$

Molarity of bromoacetate ion = molarity of hydrogen ion = 0.0132 M

Molarity of bromoacetic acid = Molarity of solution - Molarity of ionized substance

Molarity of bromoacetic acid = 0.100 - 0.0132 = 0.0868 M

Hence, the concentration of hydrogen ion and bromoacetate ion is 0.0132 M and 0.0132 M resepectively and that of bromoacetic acid is 0.0868 M

8 0

2 years ago

1. Which of the following metals oxidized by calcium ions?

viktelen [127]

1 A

2 B

3 B

4 A

5 B

6 D

7 D

8 B

8 0

3 years ago