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
Sindrei [870]
3 years ago
6

Which kind of URL suffix would you most likely find attached to a site maintained by the Red Cross?

Chemistry
1 answer:
Ostrovityanka [42]3 years ago
7 0
It would most likely be .org or .com :)
Your welcome :D
You might be interested in
Analysis of the water content of a lake found in the desert showed that it contained 17.5 percent chloride ion, and has a densit
tankabanditka [31]

Answer:

The molarity is 6.0 M.

Explanation:

<em>The </em><em>concentration</em><em> of a solution is the amount of solute present in a given amount  of solvent, or a given amount of solution.</em>

In this problem, we are asked to convert percent by mass to molarity, which are two different concentration units.

<em>The </em><em>percent by mass </em><em>is the ratio of the mass of a solute to the mass of the solution, multiplied by 100 percent.</em> On the other hand, <em>molarity (M)</em><em> is defined as the number of moles of solute per liter of solution.</em>

If we have 17.15 percent chloride ion, that means that we have 17.15 grams of chloride ion in 100 grams of solution. The density provided is the density of the solution, so we calculate how many mL correspond to 100 grams of solution:

1.23 g ----------- 1 mL

100 g ------------ <u>x= 81.3 mL</u>

Therefore, 17.5 grams of chloride ion are contained in 81.3 mL. Now we need to convert these grams into moles.

The atomic mass of chlorine is 35.5 g/mol:

35.5 g --------------- 1 mol

17.5 g --------------- <u>x= 0. 49 mol</u>

This 0.49 moles are contained in 81.13 mL, the definition of molarity says that this moles are contained in a liter (or what is the same, 1000 mL):

81.3 mL --------------- 0.49 mol

1000 mL ------------- x= 6.0 M

The molarity of the chloride ion will be 6.0 M.

5 0
3 years ago
Urea is a common fertilizer with the formula CO(NH2)2 that is sometimes used as a chemical de-icer for icy road surfaces in the
nordsb [41]

Answer:

The answer to your question is  molality = 0.61

Explanation:

Freezing point is the temperature at which a liquid turns into a solid if a solute is added to a solution, the freezing point changes.

Data

Kf = 1.86 °C/m

molality = ?

ΔTc = 1.13°C

Formula

ΔTc = kcm

Solve for m

m = ΔTc/kc

Substitution

m = 1.13 / 1.86

Simplification and result

m = 0.61

4 0
3 years ago
What did Thomson’s model of the atom include that Dalton’s model did not have?
7nadin3 [17]
Thomson's model included Protons and Electrons. His model is referred to as 'Plum Pudding' because of it.
5 0
3 years ago
Read 2 more answers
Which sample of matter is classified as a substance?<br> (1) air (3) milk(2) ammonia (4) seawater
jeyben [28]
A chemical substance has the characteristics that it cannot be separated by physical  methods. Seawater and milk can be separated by sedimentation, and air has different components depending on other aspects (such as elevation). Only ammonia is a substance. (thus it can have a formula: NH<span>3)</span>
3 0
3 years ago
Where does the energy of a hurricane come from? (1 point)
bekas [8.4K]
The answer is strong winds
6 0
2 years ago
Other questions:
  • Hydrochloric acid reacts with calcium to form hydrogen and calcium chloride. If 100 grams of hydrochloric acid reacts with 100 g
    10·2 answers
  • The statement "matter can be neither created nor destroyed by chemical means, but it can be changed from one form to another" is
    9·1 answer
  • Any change in the volume or shape of earths crust is called??
    6·1 answer
  • Radio waves travel at the speed of light, which is 3X10^8 m/s. How many minutes does it take for a radio message to reach earth
    13·1 answer
  • Which solute produces the highest boiling point in a 0.15 m aqueous solution?
    7·1 answer
  • How do scientists test their ideas?
    6·2 answers
  • Hydrogen gas can be produced by reacting aluminum with sulfuric acid. how many moles of sulfuric acid are needed to completely r
    13·2 answers
  • Air pollution that forms from the interaction between chemicals in the air and sunlight
    5·1 answer
  • Im so alone and i really need friends and maybe more pls dont delete my quiestion
    13·1 answer
  • How many moles of sodium chloride are contained in 779.3 mL of a 0.218 M solution?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!