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4vir4ik [10]
3 years ago
14

Please answer quickly ​

Chemistry
1 answer:
Stolb23 [73]3 years ago
8 0
Inherited it from his grandfather
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system of equations You and your friend are making 30 liters of sodium water. You have liters of 10% sodium and your friend has
vovikov84 [41]

Answer:

X liters of 10% + (30 - x) liters of 22% = 30...

7 0
3 years ago
Urgent plzz help meeee thx I HAVE EXAMEEE
USPshnik [31]

Answer: 2Ag^{+}(aq)+CO_3^{2-}(aq)\rightarrow Ag_2CO_3(s)

Explanation:

Spectator ions are defined as the ions which does not get involved in a chemical equation or they are ions which are found on both the sides of the chemical reaction present in ionic form.

The given chemical equation is:

2AgF(aq)+Na_2CO_3(aq)\rightarrow Ag_2CO_3(s)+2NaF(aq)

The complete ionic equation is;  

2Ag^{+}(aq)+2F^-(aq)+2Na^+(aq)+CO_3^{2-}(aq)\rightarrow Ag_2CO_3(s)+2Na^+(aq)+2F^-(aq)

The ions which are present on both the sides of the equation are Na^+ and F^- and are not involved in net ionic equation.

Hence, the net ionic equation is :

2Ag^{+}(aq)+CO_3^{2-}(aq)\rightarrow Ag_2CO_3(s)

6 0
3 years ago
What is always conserved in both physical and chemical changes, explain?
bonufazy [111]
All chemical reactions are chemical changes. The Law of Conservation of Matter states that matter cannot be created or destroyed. In a physical change, substances can change form, but the total mass remains the same. In a chemical change, the total mass of the reactants always equals the total mass of the products.
3 0
3 years ago
1) Compounds Y and Z both have the formula C9H18.
sashaice [31]

Answer:

See explanation and images attached

Explanation:

We know that the cis isomer has more heat of hydrogenation since it is less stable than the trans isomer. Since the hydrogenation of both compounds yields the same product and the hydroboration/oxidation both give a primary alcohol, they are geometric isomers and Y is the trans isomer (Image 2).

For the compound C8H12, the compound in question must be 1,5- cyclooctadiene since two moles of the same aldehyde was obtained after ozonolysis and reaction with two equivalents of hydrogen gives cyclooctane (Image 1).

5 0
3 years ago
A compound has an empirical formula of CHBr2. If it’s molar mass is 345.6 grams, what is it’s molecular formula
djyliett [7]

Answer:

The molecular formula is C2H2Br4

Explanation:

Molar Mass of CHBr2 = 12 + 1 + (2x80) = 12 + 1 + 160 = 173

The molecular formula = n x empirical formula

Molar Mass of the compound = 345.6

Empirical formula = CHBr2

n(CHBr2) = 345.6

n x 173 = 345.6

n = 345.6/173 = 2

Therefore the molecular formula is n(CHBr2) = 2(CHBr2) = C2H2Br4

3 0
3 years ago
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