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kvv77 [185]
3 years ago
6

What is the charge of a potassium (K) ion?

Chemistry
2 answers:
maw [93]3 years ago
7 0

Answer:

B, the charge is +1

Explanation:

science

Svetlanka [38]3 years ago
7 0

Answer:

B. +1

Explanation:

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How many moles in 2.21 x10E24 atoms of aluminum
lisov135 [29]
<h3>Answer:</h3>

3.67 mol Al

<h3>General Formulas and Concepts:</h3>

<u>Math</u>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

<u>Chemistry</u>

<u>Atomic Structure</u>

  • Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

<u>Stoichiometry</u>

  • Using Dimensional Analysis
<h3>Explanation:</h3>

<u>Step 1: Define</u>

2.21 × 10²⁴ atoms Al

<u>Step 2: Identify Conversions</u>

Avogadro's Number

<u>Step 3: Convert</u>

  1. Set up:                              \displaystyle 2.21 \cdot 10^{24} \ atoms \ Al(\frac{1 \ mol \ Al}{6.022 \cdot 10^{23} \ atoms \ Al})
  2. Divide:                              \displaystyle 3.66988 \ mol \ Al

<u>Step 4: Check</u>

<em>Follow sig fig rules and round. We are given 3 sig figs.</em>

3.66988 mol Al ≈ 3.67 mol Al

7 0
2 years ago
Helpppppppppppppppppp
lara [203]
Pb + Mg(NO₃)₂   →    Pb(NO₃)₂  +  Mg
This reaction would NOT occur because Pb is less reactive than Mg and as such Pb cannot displace the Mg in order for the reaction to occur under normal conditions.


Mg  +  Fe(NO₃)₂   →   Fe  + Mg(NO₃)₂
This reaction would occur. This is because Mg is more reactive than Fe and as such can displace it in the reaction, thus allowing the reaction to occur under normal conditions.


Cu + Mg(NO₃)₂   →   Cu(NO₃)₂  +  Mg
This reaction would NOT occur. Mg is more reactive than Cu, and as such copper cannot displace magnesium in order for the reaction to occur under normal conditions.
3 0
3 years ago
Pls help!<br> the chemical that is responsible for stopping reaction is called the ____
Zolol [24]

Answer:

reactant

Explanation:

I watched a chem video and this is what they called it.

8 0
2 years ago
Unlike an acid, an aqueous solution of a base A) causes some indicators to change color B) conducts electricity C) contains more
Nuetrik [128]

Answer:

D) contains more OH– ions than H+ ions

Explanation:

Bases have high concentration of hydroxides (OH-) and acids have high concentration of (H+) ions

6 0
3 years ago
How many water molecules are formed during the formation of a triglyceride?
Alekssandra [29.7K]
It consists of three individual fatty acids bound together in a single Large molecular
4 0
3 years ago
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