ForgedTiger ForgedTiger

10-10-2022
Chemistry

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Teens who are thinking about ending themselves rarely give signs, hoping for someone to understand what they are thinking & stop them.

Is this true or false?

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Why are sodium (Na) and potassium (K) in the same group on the periodic table? A They are both hard and brittle. B They have similar reactivity. C They are both

For each hydrogen ion concentration listed, calculate the solution as the concentration of hydroxide ion in the solution. Indicate whether each solution is acid

PLEASE HELP ME I DO NOT UNDERSTAND THIS!

x A Substance E * x B C D Substance A Substance B Substance C Substance Mass (g) Volume (cm3) 1.00 5.0 4.0 3.0 Examine the table for properties of various subst

Obtain the pH corresponding to the following hydronium-ion concentrations. (a) 5.9 *10^-8 M (b) 3.5 *10^-12 M (c) 7.0*10^-3 M (d) 6.66 *10^-9 M

Use Figure 1 to answer parts (a) to (c) (a) Which substance is only one compound? Tick (✓) one box. A B C D (b) Which substance is a mixture of elements? Tick

Calculate the pH of each of the following solutions from the information given. (a) [H+] = 4.80 *10^-2 M (b) pOH = 4.71 (c) [OH - ] = 9.61 *10^-3 M (d) [H+] = 1

Please help me. I really don’t understand this

A. Which atom in each pair would have the larger atomic radii? 1. Li or Cs 2. K or Br 3. Li or F 4. C or Pb B. In the question above, justify your choice for K

The pH is given for three solutions. Calculate [H+] and [OH -] in each solution. (a) pH = 2.17 [H+] ?M [OH-] ?M (b) pH = 12.27 [H+] ?M [OH-] ?M (c) pH = 5.9