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alexdok [17]
2 years ago
12

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Chemistry
1 answer:
AveGali [126]2 years ago
5 0

Answer:

ok

Explanation:

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Cubr2 molecular or atomic
gulaghasi [49]

Answer:

Molecule

Explanation:

It is a Molecule because it is made up of atoms

5 0
3 years ago
A 1.897g sample of Mg(HCO3)2 was heated and decomposed. When the sample
svlad2 [7]

1.5 % is the percent yield in the reaction.

Explanation:

Given that:

original mass of the sample used in reaction = 1.897 grams

product formed after decomposition = 1.071 grams

The reaction for the decomposition:

Mg(HCO3)2 (s) ⇒ CO2 (g) + H2O (g) + MgCO2 (s)

It says that 1 mole of Mg(HCO3)2  yielded 1 mole of  MgCO2  on decomposition

68.31 grams/mole or 68.31 grams of MgCO2 is formed

percent yield = \frac{actual yield}{theoretical yield} x 100

putting the values in the equation:

percent yield = \frac{1.071}{68.31}

                       = 0.015 x100

   PERCENT YIELD = 1.5 %

8 0
3 years ago
What two elements are present in the compounds in the last two rows of table 4​
castortr0y [4]

Answer:could u expand on the question

Explanation:

8 0
3 years ago
Revolution- is the orbiting of an object around another object... so what can i put as my example of revolution?
REY [17]

Answer:

The earth circling the sun

5 0
3 years ago
HELP PLEASE!
tia_tia [17]

Vocabulary. Balanced chemical equation: A chemical equation in which the number of each type of atom is equal on the two sides of the equation.

Hope I helped! (´▽`)

__________________________________________________________

単語。平衡化学反応式:各タイプの原子の数が方程式の両側で等しい化学反応式。

私が助けてくれたらいいのに!(´▽`)

5 0
3 years ago
Read 2 more answers
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