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
Y_Kistochka [10]
3 years ago
8

What is the change in density if a sample goes from 3.21 g/L to 5.43 g/mL?

Chemistry
1 answer:
Step2247 [10]3 years ago
3 0

Answer:

\Delta \rho =2.22 g/mL

Explanation:

Hello,

In this case, since a change in science is widely known to be considered as a subtraction between the the final and initial values of two measured variables and is represented via Δ, here the final density is 5.43 g/mL and the initial one was 3.21 g/mL, therefore, the change in density is:

\Delta \rho=\rho _f-\rho _i\\ \\\Delta \rho=5.43g/mL-3.21g/mL\\\\\Delta \rho =2.22 g/mL

Best regards.

You might be interested in
This is for a study guide, I can't figure it out!
miskamm [114]
<span>The answer is "D" where the number of collisions per unit area is reduced by one-half. Drawing back on the piston means the volume is increased. The pressure is reduced. There are fewer collisions when the pressure is reduced.</span>
3 0
3 years ago
100 POINTS
Karo-lina-s [1.5K]
Grinding pepper. It is still pepper.
I hope this helps!
7 0
3 years ago
Read 2 more answers
How many grams of MgCl2 will be obtained when 435 mL of 0.300 M HCl react with an excess of Mg(OH)2?
Marina CMI [18]
The grams of Mg(OH)2 produced is calculated as below

calculate the moles of HCl produced =molarity  xvolume/1000

= 0.3 x 435/1000= 0.1305 moles

write the equation for reaction
Mg(OH)2 +2HCl = MgCl2 + 2H2O

by use of mole ratio between HCl :MgCl2  which is 2 :1  the  moles of HCl =  0.1305 x1/2 =0.0653  moles of MgCl2

mass of MgCl2 = moles x molar mass

= 0.0653mol x95 g/mol = 6.204  grams of MgCl2
3 0
3 years ago
Please help me what is the answer
Sladkaya [172]

There are 20.8 moles of propanol

<h3>Further explanation  </h3>

The mole is the number of particles(molecules, atoms, ions) contained in a substance  

1 mol = 6.02.10²³ particles

Can be formulated

N=n x No

N = number of particles

n = mol

No = Avogadro's = 6.02.10²³

1.2 x 10⁵ molecules of propanol

\tt \dfrac{1.25\times 10^{25}}{6.02\times 10^{23}}=20.8~moles

6 0
3 years ago
In ______ observation, EVERY INDIVIDUAL in a population is counted. In _________ observation, SIGNS OF AN INDIVIDUAL, such as tr
larisa86 [58]

Answer:

In direct observation, EVERY INDIVIDUAL in a population is counted. In indirect observation, SIGNS OF AN INDIVIDUAL, such as tracks or nests, are counted.

Explanation:

Direct observation is to involve looking at the actual behavior or occurrence so for your question it would be every individual.

Indirect observation is a result of that occurrence, so for your question it would be the signs of an individual.

8 0
4 years ago
Other questions:
  • summarize what you read on the two articles by identifying the advantages and disadvantages of using plastics
    11·2 answers
  • 3) __________ transmit signals that carry pictures, data, music and conversations invisibly over long distances and have been th
    13·2 answers
  • Activation energy for a particular chemical reaction is: select one:
    5·1 answer
  • In bowen's discontinuous reaction series, the first mineral to crystallize out of a mafic melt is __________ .
    9·1 answer
  • To which planet do scientist compare to Kepler-10
    11·1 answer
  • Which element has the smallest atomic radius?<br> calcium<br> potassium<br> scandium<br> titanium
    15·2 answers
  • How many milliliters of 2.15 wt% dimethylglyoxime solution should be used to provide a 50.0% excess for Reac- tion 7-2 with 0.99
    8·1 answer
  • If y’all do all of them I will kiss u on yo fohead
    11·2 answers
  • Elements that have some properties of metals and some properties of nonmetals
    5·1 answer
  • What type of reaction is this?<br> *<br> 2NaCl + PbF2 → 2NaF + PbCl2
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!