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Dafna11 [192]
3 years ago
15

Why is there need to standardize a solution​

Chemistry
1 answer:
viktelen [127]3 years ago
6 0

<u>standardization of a volumetric solutio</u><u>n used for titration is one of the most important preconditions for reliable and transparent titration results.</u>

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Balance the following chemical equations
grigory [225]

Answer:

1. 2,3,2

2. 4,5,2

3. 3,1,1

Explanation:

7 0
2 years ago
How many grams of water are made from the reaction of 16.0 grams of o2? given the reaction: 2h2 o2 --&gt; 2h2o
Jlenok [28]

Answer:

18.0 g H₂O

Explanation:

To find the mass of water (H₂O), you need to (1) convert grams O₂ to moles O₂ (via the molar mass), then (2) convert moles O₂ to moles H₂O (via mole-to-mole ratio from equation coefficients), and then (3) convert moles H₂O to grams H₂O (via the molar mass). It is important to arrange the conversions in a way that allows for the cancellation of units. The final answer should have 3 sig figs to match the sig figs of the given value.

Molar Mass (O₂): 2(15.998 g/mol)

Molar Mass (O₂): 31.996 g/mol

Molar Mass (H₂O): 2(1.008 g/mol) + 15.998 g/mol

Molar Mass (H₂O): 18.014 g/mol

2 H₂ + 1 O₂ -----> 2 H₂O

16.0 g O₂          1 mole            2 moles H₂O         18.014 g
---------------  x  ----------------  x  ---------------------  x  -----------------  = 18.0 g H₂O
                        31.996 g             1 mole O₂             1 mole

6 0
1 year ago
If Sally has 250 grams of cement, how many kilograms does she have? How many milligrams?
MissTica

Answer:

0.250 kg

2500 g

Explanation:

1 kg = 1000g

1g = 10 mg

8 0
1 year ago
Which type of rock might be useful as a source of petroleum?
storchak [24]

Answer:

petroleum rocks

Explanation:

6 0
3 years ago
Read 2 more answers
The fifth element in group 7 in astatine would you expect it to be gas, liquid, or solid? why?
Ymorist [56]

Answer:

solid

Explanation:

Melting and boiling points of Group 7 elements State at room temperature Room temperature is usually taken as being 25°C. At this temperature, fluorine and chlorine are gases, bromine is a liquid, and iodine and astatine are solids. There is therefore a trend in state from gas to liquid to solid as you go down the group.

6 0
1 year ago
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