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
Mars2501 [29]
3 years ago
13

You want to test how the mass of a reactant affect the speed of a reaction which of the following is an example of a controlled

experiment to test this
Chemistry
1 answer:
emmainna [20.7K]3 years ago
6 0

Answer:A

Explanation:

You might be interested in
Which beakers in the model contain solid insoluble substances?
ladessa [460]
Although the models are not provided, I was able to find them and the beakers with solid present in them are:
1C
2A
2C
3A
3C

This is determined by the fact that the beakers all have a piece of closely packed substance laying at the bottom. This closely packed lattice is characteristic of solid substances, and the fact that they exist in the solution in the solid states indicates that they are insoluble.
7 0
3 years ago
Glacier and erosion in a sentence
Ilya [14]
A glasier can cause an eroision miles away from eachother
6 0
3 years ago
Carbon in the atmosphere is most often found as which of the following compounds? A. stratospheric ozone B. fossil fuel C. carbo
ad-work [718]
Please help me answer your questions about how I feel you have a good time to carbon dinosaurs in the past and
6 0
3 years ago
What element has a half-life = to 64
Virty [35]
The best answer is the isotope of strontium which is strontium-85. It has a half-life of about 64 days. The metal strontioum has four stable, naturally occurring isotopes which includes 84Sr (0.56%), 86Sr (9.86%), 87Sr (7.0%) and 88Sr (82.58%).
5 0
3 years ago
2. A student has a centrifuge tube containing 14.0 g of t-butanol and is asked to make a 1.2 m solution of ethanol/t-butanol. Ho
Vaselesa [24]

Answer:

0.774g of ethanol

0.970mL of ethanol

Explanation:

Molality is an unit of concentration defined as the ratio between moles of solute and kg of solvent.

In the problem, you need to prepare a 1.2m solution of ethanol (Solute) in t-butanol (solvent).

14.0g of butanol are <em>0.014kg </em>and as you want to prepare the 1.2m solution, you need to add:

0.014kg × (1.2moles / kg) = 0.0168 moles of solute = Moles of ethanol

To convert moles of ethanol to mass you require molar mass (Molar mass ethanol, C₂H₅OH = 46.07g/mol). Thus, mass of 0.0168 moles are:

0.0168moles Ethanol ₓ (46.07g / mol) =

<h3>0.774g of ethanol</h3>

And to convert mass in g to mL you require density of the substance (Density of ethanol = 0.798g/mL):

0.774g ₓ (1mL / 0.798g) =

<h3>0.970mL of ehtanol</h3>
8 0
2 years ago
Other questions:
  • How many neutrons exist in the isotope sodium-23?
    8·2 answers
  • A student made the lewis dot diagram of a compound shown. What is the error in the Lewis dot diagram?
    14·1 answer
  • HELPPPPPPPPPPPPP ME PLSSSSSSSSSSS
    7·1 answer
  • Which of the following best explains what happens when the kinetic energy of particles in a liquid state increases?
    12·2 answers
  • A gas that has a volume of 28 Liters, a Temperature of 318 K, and an unknown pressure initially
    7·1 answer
  • To identify a diatomic gas (X2), a researcher carried out the following experiment: She weighed an empty 3.6-L bulb, then filled
    14·1 answer
  • The power of the crane was 68600w Caculate the time taken for the crane to do 3430000 J of work Give the unit
    15·1 answer
  • Which of the following reactions shows a chemical chand
    8·2 answers
  • The mass of a substance is 27.46 g and its volume is 3.42 mL. What is the density of the substance? (hint: density = mass ÷ volu
    6·2 answers
  • Plants and animals are both multicellular eukaryotes, but only animals are what?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!