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
svp [43]
2 years ago
13

¿Cuáles son las características de los materiales de laboratorio? Por ejemplo: exactitud, resistencia a la temperatura, etc.

Chemistry
1 answer:
boyakko [2]2 years ago
7 0

Answer:

lo siento, no sé punto libre. :p

You might be interested in
A wave has 9.2 x 10-22 ) of energy. What is its wavelength?
blagie [28]

Answer:

\lambda=2.2x10^{-4}m

Explanation:

Hello!

In this case, since the relationship between energy and wavelength is defined via the speed of light and the Planck's constant as shown below:

e=\frac{c*h}{\lambda}

Since c stands for the speed of light and h for the so-called Planck's constant, we can compute the wavelength as follows:

\lambda=\frac{c*h}{e}=\frac{3.0x10^8m/s*6.626x10^{-34}J*s}{9.2x10^{-22}J}\\\\\lambda=2.2x10^{-4}m

Best regards!

3 0
3 years ago
Which scale is being described? Water freezes at 32. Water freezes at 0. Water freezes at 273.
Leya [2.2K]

Scale is defined as the measurement of unit ranges, that has been corresponds to the measurements.

The units for the measurement of temperature are given as:

\rm 0^\circ C\;=\;273\;K\;=\;32\;F

<h3>Which scale is used?</h3>

The scale used for the measurement of the freezing is the temperature scale. The temperature is measured in the units of Kelvin, Fahrenheit , and Celsius.

The unit scale for the measurement of freezing of water are

  • Freezes at 32 -  In the Fahrenheit scale
  • Freezes at 0 - In the Celsius scale
  • Freezes at 273 - In the Kelvin scale

Learn more about measurement scale, here:

brainly.com/question/1152255

7 0
2 years ago
Slimotosis
Flauer [41]

Answer:

Here's what I get  

Explanation:

A. Initial observation

Gary's shell had slime and an odour.

B. Independent variable

The independent variable is the one that the experimenter changes.

There are two independent variables: the rubbing with seaweed and the drinking of Dr. Kelp.

C. The dependent variable

The dependent variable is the amount of slime and odour.

D. The conclusion

Sponge Bob can conclude that rubbing the shell with seaweed and drinking Dr. Kelp removes the slime and odour.

However, this was a poorly designed experiment. He doesn't know if it is the seaweed or the Dr. Kelp that gives the result or if he must use both together. He should change only one independent variable at a time.

4 0
3 years ago
What is true of neutrons?
Marrrta [24]
Neutron, neutral subatomic particle that is a constituent of every atomic nucleus except ordinary hydrogen. It has no electric charge and a rest mass equal to 1.67493 × 10−27 kg—marginally greater than that of the proton but nearly 1,839 times greater than that of the electron.
7 0
3 years ago
What should be the temperature of the solvent before adding it to the sample to be recrystallized?
Serhud [2]

Answer:

Near the boiling point of the solvent

Explanation:

The process of recrystallization is hinged on the fact that the amount of solute that can be dissolved by a solvent increases with temperature. The process involves creation of a solution by dissolving a solute in a solvent at or near its boiling point.  At the boiling point of the solvent, the solute has a greater solubility in the solvent; not much volume of  the hot solvent is required to dissolve the solute.

Before the solution is later cooled, you can now filter out insoluble impurities from the hot solvent. The quantity of the original solute drops appreciably because impurities have been removed. At this lower temperature, the solution becomes saturated and the solute can no longer be held in solution hence it forms pure crystals of solute, which can be recovered.

Recrystallization must be carried out using the proper solvent. The solute must be relatively insoluble in the solvent at room temperature but more soluble in the solvent at elevated temperature.

3 0
2 years ago
Other questions:
  • For each of the salts on the left, match the salts on the right that can be compared directly, using Ksp values, to estimate sol
    11·1 answer
  • What are the chemical components of a dna molecule??
    11·2 answers
  • Calcium oxide reacts with water to produce calcium hydroxide and heat as shown by the equation. CaO(s) + H2O(l) → Ca(OH)2(aq) +
    7·1 answer
  • Which astronomer spent 20 years plotting the positions of the planets?
    13·1 answer
  • ) Any gas exerts a pressure against its surroundings. For example, if you put more gas in a balloon, it exerts more pressure and
    10·1 answer
  • Enter the atomic symbols for an isotope with four protons and five neutrons
    14·1 answer
  • Balance the equation :<br> CoBr3 + CaSO4<br><br> please define how many atoms each element contain
    14·1 answer
  • Ethane (C2H6) is one of many compounds that burns in oxygen to form carbon dioxide and water, as represented by the equation bel
    10·1 answer
  • NEED ASAP THANK YOU!
    12·1 answer
  • Large compounds that are composed of many smaller molecular subunits, most notably biochemicals are referred to as.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!