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
Neporo4naja [7]
4 years ago
5

How has the Internet changed communication in the environmental sciences?

Chemistry
1 answer:
Naily [24]4 years ago
3 0
A. It has made the spread of information faster and easier
You might be interested in
Write a scientific explanation to explain how atoms, molecules, and extended structures make up substances.
STALIN [3.7K]

Answer:

Pure substances are made up of a bulk quantity of individual atoms or molecules.

Each pure substance is made up of one of Individual atoms of the same type that are connected to form extended structures.

A chemical reaction happens when substances break apart or combine to form one or more new substances.

  • New substances form when bonds break and new bonds form.

3 0
3 years ago
Read 2 more answers
ANSWER THESE QUESTIONS PLEASE<br><br>No spam!! :/​
VladimirAG [237]

Answer:

By definition, a pure substance or a homogeneous mixture consists of a single phase. A heterogeneous mixture consists of two or more phases. When oil and water are combined, they do not mix evenly, but instead form two separate layers.

Explanation:

Sorry only knew the answer to the first question

8 0
3 years ago
Read 2 more answers
If the methane contained in 2.50 L of a saturated solution at 25 ∘C was extracted and placed under STP conditions, what volume w
Sunny_sXe [5.5K]

116.6 x 10^{ -3} is the volume of methane contained in 2.50 L of a saturated solution at 25 ∘C that was extracted and placed under STP conditions.

<h3>What is an ideal gas equation?</h3>

The ideal gas law (PV = nRT) relates to the macroscopic properties of ideal gases. An ideal gas is a gas in which the particles (a) do not attract or repel one another and (b) take up no space (have no volume).

The solubility of methane in water at 25 degrees Celcius is 1.3 x 10^{ -3} M. It implies   1.3 x 10^{ -3} moles of methane are dissolved in one litre of water.

The number of moles of methane in 4 L of water can be calculated as follows:

Moles of methane = \frac{1.3 . 10^{ -3} }{1L} x\frac{4L}{1L}

Moles of methane = 5.2 x 10^{ -3}

STP refers to standard temperature and pressure. Under STP conditions, the temperature of the substance is  0 degrees celcius and its pressure is 1 atm.

An ideal gas is an imaginary gas comprising of a large number of randomly moving particles and the motion between such articles is considered to be perfectly elastic. The ideal gas equation describes the relationship between pressure, volume, temperature and number of moles of a gas.

The expression for ideal gas equation is as follows:

PV=nRT, where n is the moles and R is the gas constant. Then divide the given mass by the number of moles to get molar mass.

Given data:

P= 1 atm

V= ?

R= 0.082057338 \;L \;atm \;K^{-1}mol^{-1}

T=273K

n=?

Putting value in the given equation:

\frac{PV}{RT}=n

5.2 x 10^{ -3} = \frac{1 \;atm\; X \;V}{0.082057338 \;L \;atm \;K^{-1}mol^{-1} X 273}

V= 116.6 x 10^{ -3}

Hence, 116.6 x 10^{ -3} is the volume of methane contained in 2.50 L of a saturated solution at 25 ∘C was extracted and placed under STP conditions.

Learn more about the ideal gas here:

brainly.com/question/27691721

#SPJ1

4 0
2 years ago
What would you observe when zinc is added to solutions of iron II sulphate? write the chemical reaction that takes place.​
kompoz [17]

Answer:

When zinc is added to the solution of iron sulphate, the colour of iron sulphate solution changes. It is because zinc is more reactive than iron, it displaces iron from its solution of iron sulphate and a grey precipitate of iron and a colourless solution of zinc sulphate is formed.

Explanation:

Zn(s) + FeSO4(aq) -----> ZnSO4(aq) + Fe(ppt.)

8 0
3 years ago
Identify all of the physical changes that take place during the making of the omelet.
8_murik_8 [283]
Cutting pepper
cutting onion
folding eggs over
cutting ham
mixing eggs(...?)

hope this helped!
7 0
3 years ago
Other questions:
  • 5 Um vidro contém 300 cm3 de mercúrio de densidade 13 g/cm3. Qual é massa de mercúrio contido no vidro?
    12·1 answer
  • Identify all correct statements about the ionization of water.check all that apply.check all that apply.water ionizes to form pe
    10·1 answer
  • The following reaction does not proceed to a product: H2O + Cu --&gt; no reaction. Why is that?
    8·2 answers
  • The regulation of mineral ions in the cellular fluids of biological systems is performed by ion pumps that selectively transport
    10·1 answer
  • I need help on number 8!!
    6·1 answer
  • PLEASE HELP I DO NOT UNDERSTAND ANY OF THIS
    15·1 answer
  • Where does the Grevy's Zebra live?
    14·2 answers
  • Name the processes involved in obtaining isolated nitrogen from air in the lab​
    10·1 answer
  • Be able to interpret a population graph in order to estimate population growth
    15·1 answer
  • A sample of argon, Ar, has a volume of 5.40 L with an unknown pressure. The gas has a volume of 9.73 L when the pressure is 3.62
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!