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Brilliant_brown [7]
4 years ago
7

5 Which polyatomic ion is found in the compound represented by the formula NaHCO3?

Chemistry
1 answer:
pav-90 [236]4 years ago
7 0
Hydrogen Carbonate, or HCO3.
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What else is produced during the combustion of propane, C3H8?
Bogdan [553]

Answer:

H20

Explanation:

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3 years ago
Please help me it’s for a test! #8 and #9
Dmitrij [34]

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1. A

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A compound consists of 75% magnesium and 25% oxygen. Find the empirical formula.
laila [671]
<h2>Answer:</h2>

% Composition of elements:

  • Magnesium = 75%
  • Oxygen = 25%

Atomic mass of given elements:

  • Magnesium = 24 g
  • Oxygen = 16 g

Now, divide % composition by Atomic mass:

\footnotesize\implies Mg = \dfrac{\% \:  Composition}{Atomic  \: mass} =  \dfrac{75}{24}  =  \bf 3.125

\footnotesize\implies O = \dfrac{\% \:  Composition}{Atomic  \: mass} =  \dfrac{25}{16}  =  \bf 1.5625

Simplest Ratio:

\footnotesize\implies Mg  =  \dfrac{3.125}{1.5625}  = 2

\footnotesize\implies O  =  \dfrac{1.5625}{1.5625} = 1

Empirical Formula:

\footnotesize\implies \underline{ \boxed{ \red{ \bf Empirical \:  Formula = Mg_2O}}}

8 0
3 years ago
А. B<br> Which of the following is true about the picture above? What would it be?
JulijaS [17]

Answer:

Container A is a solution and Container B is a colloid.

Explanation:

Container A is a solution as the tyndall efffect is not present. You cannot see the light bean through the glass.

Container B is a suspension or a colloid as you can see the beam through the glass.

The first option proposes Container A is a colloid...this is not correct

The third option is not true as the tyndall effect is only displayed in container B

The fourth option is not correct the tyndall effect is not present in container A meaning it would not be a suspension or a colloid and you can see the tyndall effect in container B indicating its not a solution

8 0
4 years ago
When a coil of wire is connected to a batter, an electric current flows through it. True or False​
gizmo_the_mogwai [7]

Answer:

True i think.

Explanation:

7 0
3 years ago
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