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
viktelen [127]
3 years ago
13

What Communication system do submarines use ?

Chemistry
1 answer:
PolarNik [594]3 years ago
7 0

Answer:

uh

Explanation:

I think its like radar or something like that- im not too sure sorry

You might be interested in
What are the benefits of taxes? What is the relationship between taxes and the government?
marin [14]

collect this money and use it to finance social projects

__________________________________________

3 0
3 years ago
Read 2 more answers
Iron is extracted from iron oxide in the Blast Furnace: Fe 2 O 3 + 3 CO → 2 Fe + 3 CO 2
arsen [322]

a. mass of iron = 69.92 g

b. percent yield = 93%

<h3>Further eplanation </h3>

Percent yield is the compare of the amount of product obtained from a reaction with the amount you calculated

General formula:

Percent yield = (Actual yield / theoretical yield )x 100%

An actual yield is the amount of product actually produced by the reaction. A theoretical yield is the amount of product that you calculate from the reaction equation according to the product and reactant coefficients

a.

Reaction

Fe₂O₃+3CO⇒2Fe+3CO₂

MW Fe₂O₃ :  159.69 g/mol

mol Fe₂O₃

\tt \dfrac{100}{159,69}=0.626

mol Fe₂O₃ : mol Fe = 1 : 2

mol Fe :

\tt \dfrac{2}{1}\times 0.626=1.252

mass of Fe(Ar=55.845 g/mol) :

\tt 1.252\times 55.845=69.92~g

b.

actual yield = 65 g

theoretical yield = 69.92 g

percent yield :

\tt =\dfrac{65}{69.92}=0.93=93\%

8 0
3 years ago
Two or more assistance
Goryan [66]
I believe it would be a compound.
4 0
3 years ago
How would the freezing point of seawater compare with that of pure water? a)higher b) lower c) the same d) ten times higher
melamori03 [73]
The answer would be B) Lower, because pure water freezes at 32 degrees Fahrenheit whereas salt water freezes at 28.4 degrees Fahrenheit. Hopefully this helps!
4 0
3 years ago
Read 2 more answers
The temperature at which the reaction is occurring is increased
svetlana [45]

The addition of heat energy to a system always causes the temperature of that system to increase. This is always true because you are adding heat of a substance to increase  its temperature. For example, you are going to drink a cup of coffee. And you wanted it hot to boost your attention. So you have to use hot water. In order for your water to become hot or warm, you need boil it in a kettle. Note that you are going to use an electric stove. The electric stove gets it energy from the source giving it a hotter temperature to the water in the kettle. You are applying heat energy to warm the water. So, the statement is true.

6 0
3 years ago
Other questions:
  • Based on the sign of E cell, classify these reactions as spontaneous or non spontaneous as written.? assume standard conditions.
    7·2 answers
  • After the discovery of the microscope, many microorganisms were placed into taxonomic categories. What characteristic of science
    5·2 answers
  • tell how a voltaic cell works. be sure to mention the various parts of the voltaic cell and what they have to do with how it wor
    7·1 answer
  • The following characteristics describe which of these terms? The substance is mixed uniformly throughout and each part of the su
    13·2 answers
  • In the chemical reaction C + H20 = CO + H2, what are the
    10·1 answer
  • A large balloon is initially filled to a volume of 25.0 L at 353 K and a pressure of 2575 mm Hg. What volume of gas will the bal
    12·1 answer
  • K-12 Molar Mass<br> 7/10<br> Calculate the molar mass of aluminum nitrate, Al(NO3)3.<br> g/mol
    11·1 answer
  • If you start a chemical reaction with 5 atoms of hydrogen, how many hydrogen atoms will you have when it is finished? Group of a
    8·1 answer
  • what are the four phase changes that result from an increase in energy and what are the four phase changes that result from a de
    10·1 answer
  • The particle diagram shown above represents the dissolution of CuCl(s) assuming an equilibrium concentration for Cu+ ions of abo
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!