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
Ahat [919]
3 years ago
7

Identify effective techniques for accurate pipet use. Select all that apply. Select one or more: Measure liquid by aligning the

meniscus with the volume line. Leave any air bubbles in a pipet that occur after drawing up liquid. Do not let liquid enter the pipet bulb or pump. Use the pipet bulb to force the last drop out of the tip.
Chemistry
1 answer:
Andrej [43]3 years ago
3 0

Answer:

Measure liquid by aligning the meniscus with the volume line.

Explanation:

A pipette is an instrument specially made for measuring a small volume of liquid.

The pipette comes in various sizes to be used in measuring various volumes of liquid. Generally, the pipette has a volume line which helps us to measure a liquid.

A liquid is measured by aligning the meniscus with the volume line.

You might be interested in
True or False: The statement below is an observation.
nevsk [136]
The answer is true because if you look at the question what does it say
7 0
3 years ago
Read 2 more answers
Which of the following statements is true about the nucleus?
vlabodo [156]

Answer: option d i think

Explanation:

7 0
3 years ago
Read 2 more answers
139%
GaryK [48]

<u>Answer:</u>

The percent composition of this compound is 94%

<u>Explanation:</u>

The reaction can be formed as

2 \mathrm{Fe}+3 \mathrm{Cl}_{2} \rightarrow 2 \mathrm{FeCl}_{3}

\frac{\text { Weight of } \mathrm{Cl}_{2}}{\text { 3* Molar Mass of } \mathrm{Cl}_{2}}=\frac{\text { Weight of } \mathrm{Fe}}{2 * \text { Molar Mass of Fe }}

\frac{\text { Weight of } \mathrm{Cl}_{2}}{3 *(2 * 35.5)}=\frac{3.56}{2 * 55.8}

\text { Weight of } C l_{2}=\frac{3.56 * 3 * 71}{2 * 55.8}=6.79 \mathrm{g}

\mathrm{n}\left(\mathrm{Cl}_{2}\right)=\mathrm{m}\left(\mathrm{Cl}_{2}\right) / \mathrm{M}\left(\mathrm{Cl}_{2}\right)=6.79 / 71=0.1 \mathrm{m}

\mathrm{n}(\mathrm{Fe})=\mathrm{m}(\mathrm{Fe}) / \mathrm{M}(\mathrm{Fe})=3.56 / 55.8=0.06 \mathrm{m}

Based on no. of iron reacted,  

\mathrm{n}(\text { moles of } \mathrm{Fe})=\mathrm{n}\left(\text { moles of } \mathrm{FeCl}_{3}\right)

n = m/M

\mathrm{m}\left(\mathrm{FeCl}_{3}\right)=\mathrm{n}^{*} \mathrm{M}=0.06^{*} 162.5=9.75 \mathrm{g}

% composition ofFeCl_3  

=  (9.75 / 10.39)^{*} 100

= 94%

6 0
3 years ago
An objects starting position is at a point A and it's final point in at B to figure out what the speed is in between what other
Nina [5.8K]
More precisely, we need to specify its position<span> relative to a convenient reference frame. .... Also you s</span>hould know<span> that some people use the subscript "0" to refer to the ... mx, </span>start<span> subscript, 0, end subscript, equals, 1, </span>point<span>, 5, space, m and her </span>final<span> ... </span>between<span> two </span>points<span>, or we </span>can<span> talk about the distance traveled by an </span>object<span>.</span>
3 0
3 years ago
In the name carbon dioxide, the prefix of the second word indicates that a molecule of carbon dioxide contains
xz_007 [3.2K]
 the prefix of the second word indicates that a molecule of carbon dioxide indicates that the compound contains two oxygen atoms
8 0
3 years ago
Read 2 more answers
Other questions:
  • How important is reproduction in containing the cycle of life on earth
    7·1 answer
  • All of the following are classified as acids except
    12·1 answer
  • What is aqueous solution give few examples​
    13·1 answer
  • ________ is defined as the number of protons plus the number of neutrons. ________ is defined as the number of protons plus the
    14·1 answer
  • Is roasting a marshmallow a Chemical or Physical reaction?
    6·2 answers
  • What is the main difference between Lewis structure and Bohr models?
    15·1 answer
  • Calculate the freezing temperature of the following solution of 0.50 M glucose (a covalent compound). Assume that the molality o
    14·1 answer
  • Dyfuzja co to jest i na czym polega
    12·1 answer
  • Changes between a liquid and gas exsample​
    9·1 answer
  • Solid potassium chloride is obtained by the reaction of solid potassium and chlorine gas.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!