1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Otrada [13]
2 years ago
10

1.Give the correct order of apparatus (Evaporating dish, Filter funnel, Test tube, Dropper, Spatula) to show the correct arrange

ment that can be used to prepare and investigate the nature of pH of a sample of onion solution.
2.Name an apparatus and a chemical used in this experiment.
Chemistry
1 answer:
g100num [7]2 years ago
7 0

Answer:

2 answer

A List of Chemistry Laboratory Apparatus

Safety goggles and safety equipment.

Beakers.

Erlenmeyer flasks, AKA conical flasks.

Florence flasks, AKA boiling flasks.

Test tubes, tongs, and racks.

Watch glasses.

You might be interested in
What is the ph of an aqueous solution with the hydronium ion concentration : [h3o+] = 3 x 10-5 m ?
BaLLatris [955]

The concentration of hydrogen can be shown as:

[H+ ] = 3 * 10-5 M

pH can be determined as:

pH = - log [H+ ]

= - log (3 * 10-5)

= 4.53

Thus the pH of solution is 4.53


8 0
3 years ago
What behavior of light PROVES that it is a wave? Hint: will this ONLY happen because light is a wave, or could it also be true o
irina [24]

Answer:

Light changes speed in a glass of water.

Explanation:

8 0
3 years ago
Write the balanced equation for the reaction of aqueous Pb ( ClO 3 ) 2 Pb(ClO3)2 with aqueous NaI . NaI. Include phases. chemica
FinnZ [79.3K]

<u>Answer:</u> The mass of precipitate (lead (II) iodide) that will form is 119.89 grams

<u>Explanation:</u>

To calculate the number of moles for given molarity, we use the equation:

\text{Molarity of the solution}=\frac{\text{Moles of solute}}{\text{Volume of solution (in L)}}

Molarity of NaI solution = 0.130 M

Volume of solution = 0.400 L

Putting values in above equation, we get:

0.130M=\frac{\text{Moles of NaI}}{0.400L}\\\\\text{Moles of NaI}=(0.130mol/L\times 0.400L)=0.52mol

The balanced chemical equation for the reaction of lead chlorate and sodium iodide follows:

Pb(ClO_3)_2(aq.)+2NaI(aq.)\rightarrow PbI_2(s)+2NaClO_3(aq.)

The precipitate (insoluble salt) formed is lead (II) iodide

By Stoichiometry of the reaction:

2 moles of NaI produces 1 mole of lead (II) iodide

So, 0.52 moles of NaI will produce = \frac{1}{2}\times 0.52=0.26mol of lead (II) iodide

To calculate the number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}

Moles of lead (II) iodide = 0.26 moles

Molar mass of lead (II) iodide = 461.1 g/mol

Putting values in above equation, we get:

0.26mol=\frac{\text{Mass of lead (II) iodide}}{461.1g/mol}\\\\\text{Mass of lead (II) iodide}=(0.26mol\times 461.1g/mol)=119.89g

Hence, the mass of precipitate (lead (II) iodide) that will form is 119.89 grams

4 0
3 years ago
What is the main source of energy in a clear water stream in an open area
solniwko [45]

Answer:

c.sunlight

Explanation:

4 0
3 years ago
Read 2 more answers
Which tool or tools would you use to measure and compare the mass of a cup of fresh water and a cup of salt water
Artemon [7]
You could use a scale to measure the mass as well as a cup to hold the water. If you were comparing the two, you should also probably use a graduated cylinder to get the same amount of each type of water.

Hope this helped ^_^
4 0
3 years ago
Other questions:
  • How many grams of Ag2CO3 are required to reacr with 28.5 mL of 1.00 M NaOH solution?
    13·1 answer
  • If 23.4 grams of hydrogen gas were produced by the reaction below, how many grams of aluminum chloride were produced?
    15·1 answer
  • What is the change on the subatomic particles represented in Figure 4-3? Assuming all the particles in the nucleus are visible,
    15·2 answers
  • What is co2 the element
    7·1 answer
  • Which Period 4 element has the most metallic properties?<br> (1) As (3) Ge<br> (2) Br (4) Sc
    13·1 answer
  • Natural gas is a A. type of solar energy. B. type of electricity. C. nonrenewable resource. D. renewable resource.
    12·1 answer
  • The chain on a bicycle rusts faster when the bicycle is left outside in damp conditions. Which of the following factors affect t
    5·1 answer
  • Express the answers to these problems in the correct number of
    10·1 answer
  • How many atoms are there in 2.59 mol of carbon monoxide (CO)?
    12·1 answer
  • What is the balanced equation for the reaction of a solution of sodium sulfate is mixed with strontium chloride?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!