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V125BC [204]
3 years ago
5

Leslie wants to know which advertising medium works best to promote her electronics store. She surveys her customers over a week

end and creates a bar graph. Based on her survey, which advertising mediums will work best to publicize Leslie’s in-store specials
Chemistry
2 answers:
Korolek [52]3 years ago
7 0
No survey to base on
satela [25.4K]3 years ago
5 0

Answer:

option 4=d

Explanation:

the internet and printed flyers have the highest score on the bar graph therefor the two are the best bet and the correct option

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Complete and balance the following acid-base reaction equation ______HNO3 + ______ Mg(OH)2 ------>
jekas [21]

Answer

_2 HNO₃ + 1 Mg(OH)₂ → 1 Mg(NO₃)₂ + 2 H₂O

Explanation

Given:

______HNO3 + Mg(OH)2 ------>

Solution:

Note that the reaction between an acid and a base will give salt and water only.

Hence the complete reaction of the given equation is:

___HNO₃ + Mg(OH)₂ → Mg(NO₃)₂ + H₂O

To get the balanced equation for the acid-base reaction, 2 moles of HNO₃ will react with 1 mole of Mg(OH)₂ to produced 1 mole of Mg(NO₃)₂ and 2 moles of H₂O.

Therefore, the complete and balanced equation for the given acid-base reaction is:

_2 HNO₃ + 1 Mg(OH)₂ → 1 Mg(NO₃)₂ + 2 H₂O

5 0
1 year ago
Na2CO3 + CO2 + H2O → NaHCO3
Veseljchak [2.6K]

Answer:

i think the answer is d

Explanation:

8 0
3 years ago
Read the following chemical equation.
elena55 [62]

Answer:

Iron gains three electrons.

5 0
3 years ago
A single atom of an element has 21 neutrons, 20 electrons, and 20 protons. Which element is it?
sukhopar [10]

Answer:

ca

Explanation:

3 0
3 years ago
A piece of mental with a mass of 106 g is placed in a 50 mL graduated cylinder.The volume rises from 20 mL to 31 mL. What is the
garik1379 [7]

Answer:

9.64g/mL

Explanation:

Given parameters:

Mass of the metal  = 106g

Volume of cylinder = 50mL

Volume difference  = 31mL  - 20mL  = 11mL

Unknown:

Density of the metal  = ?

Solution:

To find the density of the metal, we use;

 Density  = \frac{mass}{volume}  

 Density  = \frac{106}{11}   = 9.64g/mL

8 0
2 years ago
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