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LiRa [457]
3 years ago
9

What is the empirical formula for glucose A) B) C) D)

Chemistry
2 answers:
Schach [20]3 years ago
6 0
C6h12O6 ( the D one it’s the correct one)
pshichka [43]3 years ago
4 0
The Answer is A CH2O

The molecular formula for glucose is C6H12O6. The subscripts represent a multiple of an empirical formula. To determine the empirical formula, divide the subscripts by the GCF of 6 which gives CH2O.
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You want to make 100 mL of a 2.5 M stock solution of calcium chloride (molecular weight 110.98 g/mol). How many grams of calcium
Evgesh-ka [11]

Answer:

27.7 g

Explanation:

  • 100 mL = 0.100 L

To solve this problem we use the definition of <em>molarity</em>:

  • M = mol / L

From the problem we're given M = 2.5 M and volume = 0.100 L. We use the above formula and <u>calculate the required moles of calcium chloride</u> (CaCl₂):

  • 2.5 M = moles / 0.100 L
  • moles = 0.25 moles CaCl₂

Finally we use the<em> molecular weight</em> of calcium chloride to <u>calculate the required mass</u>:

  • 0.25 moles CaCl₂ * 110.98 g/mol = 27.745 g CaCl₂

Rounding to the nearest tenth of a gram the answer is 27.7 g.

5 0
4 years ago
What occurs as salt dissolves in water?
AysviL [449]

Answer:

Water molecules pull the sodium and chloride ions apart, breaking the ionic bond that held them together. :)

Explanation:

<em>It izz wat it izzzz!!!</em>

5 0
3 years ago
How many grams of aluminum oxide would form if 15.2 moles of aluminum burned
Step2247 [10]

Your answer would be 637.25g

4 0
4 years ago
A student is calculating the molarity of a solution that has 43.54 g of aluminum nitrate dissolved in water to make 4.0 L of wat
Nonamiya [84]
Umm it’s either A, B, C, or D.
7 0
3 years ago
Find the volume of a gas at standard pressure if its volume at 780 mm Hg is 80 ml​
Olin [163]

Answer:

0.082L or 82mL

Explanation:

Given parameters:

Pressure of gas  = 780mmHg;

                760mmHg  = 1atm

                780mmHg  = \frac{780}{760}   = 1.03atm

Volume of gas  = 80ml  = 0.08L

Standard pressure  = 1atm

Unknown:

Volume of gas   = ?

Solution:

To solve this problem, we apply Boyle's law which states that "the volume of a fixed mass of gas is inversely proportional to the pressure if the temperature is constant".

   Mathematically;

        P₁ V₁   = P₂ V₂

P and V are temperature values

1 and 2 are initial and final states;

    Insert the parameters and solve;

               1.03 x 0.08  = 1 x V₂

   V₂  = 0.082L or 82mL

8 0
3 years ago
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