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
Solnce55 [7]
3 years ago
11

If one uses an analytical balance to measure out a small quantity of reagent, and the mass is 0.0256 g, then how many significan

t figures are present?
Chemistry
1 answer:
vladimir1956 [14]3 years ago
3 0

Answer:

3

Explanation:

There are 3 significant figures and four decimal places. How do you know how many significant figures? Now let us convert the given number to standard form; we have 2.56*10^-2. Only the two significant figures were shown.

You might be interested in
A cube of an unknown metal is 1.25 inches on each side and has a mass of 128.3741 g. What is its' density?
Mademuasel [1]
Hey there!

To find the density of an object, you must use this formula:
Density=Mass/Volume

Knowing that your mass is 128.3741, the only information you need left would be to find the volume of the cube.

Because the side length of the cube is given, you can multiply the length three times in order to find its volume:
1.25*1.25*1.25
=1.953125

Now that you have your volume and mass, divide the mass by the volume to find the density:
128.3741/1.953125
=65.7275392

Therefore, your density would be 65.7275392 grams per inches cubed.
6 0
3 years ago
Pick one answer do not put any links please
skelet666 [1.2K]
The answer is D! This adaptation helps the eel fend off potential threats! Hope this helps, have a great day!
3 0
3 years ago
What is the temperature of a gas that is expanded from 3.75 L at 37 degrees Celsius to 5.6 L?
deff fn [24]

Answer:

190 °C  

Step-by-step explanation:

The pressure is constant, so this looks like a case where we can use <em>Charles’ Law</em>:  

V₁/T₁ = V₂/T₂      Invert both sides of the equation.  

T₁/V₁ = T₂/V₂      Multiply each side by V₂

T₂ = T₁ × V₂/V₁

=====

V₁ = 3.75 L; T₁ = (37 + 273.15) K = 310.15 K  

V₂ = 5.6 L;   T₂ = ?  

=====

T₂ = 310.15 × 5.6/3.75

T₂ = 310.15 × 1.49

T₂ = 463 K

t₂ = 463 – 273.15

t₂ = 190 °C

3 0
3 years ago
Wind direction is determined with a __________________.
fomenos

Answer:

Wind direction is determined with a wind vane.

Hope it will help :)

6 0
3 years ago
Read 2 more answers
1. Which variable is the independent variable and which is the dependent variable? Density vs. ethylene glycol
AnnyKZ [126]
<span>1. Which variable is the independent variable and which is the dependent variable? Density vs. ethylene glycol
The independent variable would be ethylene glycol and dependent variable would be density.

A. A 25-mL volumetric flask with its stopper has a mass of 32.6341 g. The same flask filled to the line with ethylene glycol (C2H6O2, automotive antifreeze) solution has a mass of 58.0091 g. What is the density of the ethylene glycol solution?

Density = 58.0091 - 32.6341 / .025 = 1015 g/L

B. What is the molarity of the ethylene glycol solution, if the mass of ethylene glycol in the solution is 12.0439 g?

Molarity = 12.0439 ( 1 mol / 62.07 g) / 0.025 = 7.8 M</span>
5 0
3 years ago
Read 2 more answers
Other questions:
  • Some people are so good at their professions that other companies will try to recruit them?
    11·1 answer
  • PLEASE ANSWER!!!!!!!endothermic and exothermic reactions lab report
    6·2 answers
  • Object Y carries a net negative charge after being rubbed by fur. Cassie holds onto one end of object Y and brings the other end
    14·1 answer
  • How many g are equal to 345.7mg?
    15·2 answers
  • How do we balance Zn + HNO3 Zn(NO3)2 + NO + H20​
    14·1 answer
  • According to the wave-mechanical model<br> of the atom, electrons are located in
    13·2 answers
  • Please help ASAP! Which expression is equal to the number of kilograms (kg) in 3700 milligrams
    9·1 answer
  • A 15.0 mL urine from a dehydrated patient has a density of 1.019g/mL. What is the mass of the sample, reported in mg?
    8·1 answer
  • Which two processes turn layers of loose sediment into hard sedimentary rock? (ASAP)
    7·1 answer
  • 10) The presence of nitrates in soil can be shown by warming the soil with
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!