CHEMISTRY HIGH SCHOOL

What is the chemical formula for mercury(I) nitrate

Answers

Answer 1
Answer: Hg(NO3)2
I hope this helps :)

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Which characteristic would you predict from a solution that has a pH of 5?sour taste
very high concentration of hydroxide ions
slippery feeling
very low concentration of hydronium ions

Answers

Answer : The correct option is, sour taste

Explanation :

Acid : It is a substance that has ability of donating proton or hydrogen ion or hydronium ion, H^+.

The properties of an acid are :

  • Acids are sour in taste.
  • The texture of an acid solution is sticky.
  • It changes the color of the litmus paper to red.
  • It react with a metal to give compound and hydrogen gas.
  • The pH of an acid is less than 7.

Base : It is a substance that has ability of donating hydroxide ion, OH^-.

The properties of an base are :

  • Base are bitter in taste.
  • The texture of an base solution is slippery.
  • It changes the color of the litmus paper to blue.
  • It does not react with a metal.
  • The pH of a base is more than 7.

As per question, the pH is 5 that means the solution is acidic in nature and follow the properties of an acid. So, the pH = 5 has the sour taste characteristic. While the other options are the properties of a base.

Hence, the correct option is, sour taste
With a pH of five, it would mean that this substance is a weak acid one would also it expect it would be sour.

Which of these is an appropriate instrument to measure mass?balance
burette
ruler
graduated cylinder

Answers

The appropriate instrument to measure mass is through the use of a balance. This type of equipment is different from your regular weighing scale. The balance actually measures based on a known mass unlike the weighing scale which measures only the weight of an object.

Answer: Balance

Explanation: Got it right on my test

What is the value of mass of electron?for which has 6.25 × 10^18?

Answers

Answer: the mass of an electron is approximately 9.10938356 × 10^-31 kilograms (kg)

Explanation:

How many protons does the element cobalt (Co) have? 27 32 58.93 59

Answers

cobalt has 27 Protons

If fluorine 20 undergoes beta decay , what will it become ?

Answers

to be honest im not for sure because you don't have any answer choices
Fluorine 20 will decay to stable.

How does an earthquake cause a tsunami?

Answers

yes because the earth plates are grinding against each other and are the main cause of Tsunami!
When an earthquake happens under water a tsunami is formed
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element x has an electron configuration of 1s²2s²2p⁶3s¹, while element z has an electron configuration of 1s²2s²2p⁵. a) which element would have greater first ionization energy? b) which element would have a larger radius? c) which element would have higher electronegativity? d) which element would form an ion that has a larger radius? e) which element would release more energy when it gains an electron?