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babymother [125]
3 years ago
9

Please Help!!!

Chemistry
1 answer:
Darya [45]3 years ago
8 0
How many grams of glucose is dissolved in 2.88% glucose solution if 1944 grams of water is used???? The answer is C. 56 grams 
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Complete the balanced molecular chemical equation for the reaction below. If no reaction occurs, write NR after the reaction arr
Nostrana [21]

Answer: Pb(NO_3)_2(aq)+2KI(aq)\rightarrow PbI_2(s)+2KNO_3(aq)

Explanation:

A double displacement reaction is one in which exchange of ions take place. The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid form are represented by (s) after their chemical formulas.

The double displacement reaction in which one of the product is formed as a solid is called as precipitation reaction.

The balanced molecular equation is:

Pb(NO_3)_2(aq)+2KI(aq)\rightarrow PbI_2(s)+2KNO_3(aq)

8 0
3 years ago
For the following reaction, 4.64 grams of oxygen gas are mixed with excess benzene (C6H6). The reaction yields 3.95 grams of car
Reil [10]

Answer:

Theoretical yield for CO₂ is 5.10g

Explanation:

Reaction: 2C₆H₆(l) + 15O₂(g) → 12CO₂(g)  + 6H₂O(g)

We convert the mass of oxygen to moles:

4.64 g /32 g/mol = 0.145 moles of O₂

Let's find out the 100% yield reaction of CO₂ (theoretical yield)

Ratio is 15:12. So let's make this rule of three:

15 moles of O₂ can produce 12 moles of CO₂

Therefore 0.145 moles of oxygen will produce (0.145 . 12) /15 = 0.116 moles

We convert the moles to mass: 0.116 mol . 44 g / 1mol = 5.10 g

6 0
3 years ago
Read 2 more answers
Na + H2O = NaOH<br> Balance the following equation
Mkey [24]
2Na + 2H2O ——> 2 NaOH + H2
5 0
3 years ago
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SCIENCE Which best describes a difference between single-celled organisms and multicellular organisms?
weeeeeb [17]

Answer:

A.

Single-celled organisms are simple, while multicellular organisms are complex.

7 0
2 years ago
Glass is different from a mineral because it ________. select one:
SashulF [63]
The correct answer is A. Glass does not have an orderly arrangement of the atoms, like the minerals. Glass lacks a crystal lattice structure, and is an amorphous solid. The atoms of glass are rigidly fixed but are arranged in an orderly fashion. 
7 0
3 years ago
Read 2 more answers
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