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3 years ago

How many seconds in 4.3 years?

Chemistry

1 answer:

andrew-mc [135]3 years ago

6 0

1.356e+8 seconds in a year

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A yellow element stinks when burned

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Sulfur smells like rotten egg and is yellow...

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3 years ago

(a) Write the dissolution reaction for solid Na2CO3 below. (Use the lowest possible coefficients. Include states-of-matter under

Andreas93 [3]

Answer:

For a: The chemical equation for the dissolution of sodium carbonate is $Na_2CO_3(s)\rightarrow Na_2CO_3(aq.)$

For b: The net acid-base reaction is $CO_3^{2-}(aq.)+H_2O(l)\rightarrow OH^-(aq.)+HCO_3^-(aq.)$

Explanation:

For a:

Dissolution reaction is defined as the reaction in which a solid compound gets dissolved in water to form aqueous solution.

The chemical equation for the dissolution of sodium carbonate follows:

$Na_2CO_3(s)\rightarrow Na_2CO_3(aq.)$

Ionization reaction is defined as the reaction in which an ionic compound dissociates into its ions when dissolved in aqueous solution.

The chemical equation for the ionization of sodium carbonate follows:

$Na_2CO_3(aq.)\rightarrow 2Na^+(aq.)+CO_3^{3-}(aq.)$

For b:

Now, the anion formed which is $CO_3^{2-}$ reacts with water to form conjugate acid.

The chemical equation for the reaction of anion with water follows:

$CO_3^{2-}(aq.)+H_2O(l)\rightarrow OH^-(aq.)+HCO_3^-(aq.)$

Hence, the net acid-base reaction of the anion formed and water is written above.

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3 years ago

Biochemical reactions in your cells occur best at approximately which temperature

timama [110]

Answer:

38°c

Explanation:

Biochemical reactions takes place in our body at an approximate temprature of 38°c...

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3 years ago

Read 2 more answers

Please can someone help me??!

svp [43]

I believe the correct order of words should be:

Counterclockwise

Crescent

Full

Half

Faces?

Waxing

Right

Waning

Left

I am not sure on faces, but I don't see any other words from the bank that would fit that description. Hope these are correct and hope I helped!

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3 years ago

Endothermic or exothermic- grass growing in a lawn.

DochEvi [55]

Answer:

endothermic

Explanation:

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3 years ago