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
KIM [24]
2 years ago
6

Read the following summary of the article

Chemistry
1 answer:
True [87]2 years ago
6 0

Answer:

ea

Explanation:

zxds

You might be interested in
Determine the latitude and longitude of the location A
malfutka [58]

Answer:

Latitude: 30\° N

Longitude: 45\° W

Explanation:

Lets begin by explaining the meaning of latitude and longitude as geogrephical coordinates:

Latitude is the angular distance between the equatorial line, and a specific point on the Earth. It is measured in degrees and is represented according to the hemisphere in which the point is located, which can be north or south latitude.  

In this sense latitude 0\° refers to the equatorial line that divides the Earth in two hemispheres (North and South).

Longitude represents the specific east–west position of a point on the Earth's surface, being longitude 0\° the prime meridian or Greenwich meridian.

So, according to the figure, where the model of the Earth is divided by latitude lines separated by 10\° and the longitude lines separated by 15\°; we only have to count the lines from the equator to the line where the point A is, and count the lines fromo the Prime meridian to the line where point A is located.

Hence, point A location is:

Latitude: 30\° N

Longitude: 45\° W

5 0
3 years ago
Which of the following is an example of a compounds?
wlad13 [49]

Answer:b.CaCl2

Explanation:

A compound is  a substance resulting when two or more elements  are are chemically bonded together either ionically or covalently in a fixed ratio.

From the given options we can see that the only compound there  is CaCl2 which is an ionic compound in the fixed  ratio of one calcium ion to two chloride ions.

Other options , Cu,Na and Nd are merely pure substance---Elements

5 0
2 years ago
ENERGY CANNOT BE CREATED<br> TRUE<br> False<br> Other:
Yuliya22 [10]

Answer:

its false ...............

8 0
3 years ago
Read 2 more answers
Which element has 1s2s2p3s3p electron configuration?
Rus_ich [418]
To answer this problem, we need to count the electrons in the given configuration. The complete configuration is 1s2 2s2 2p6 3s2 3p6. There are 2+2+6+2+6 equal to 18 electrons. We find next the element with an atomic number of 18. That element is noble gas argon. 
6 0
3 years ago
Read 2 more answers
The decomposition of NI3 to form N2 and I2 releases −290.0 kJ of energy. The reaction can be represented as 2NI3(s)→N2(g)+3I2(g)
EastWind [94]

Answer:

-7.34 kilo Joules is the change in enthaply when 20.0 grams of nitrogen triiodide decomposes.

Explanation:

Mass of nitrogen triiodide = 20.0 g

Moles of nitrogen triiodide = \frac{20.0 g}{395 g/mol}=0.05063 mol

2NI_3(s)\rightarrow N_2(g)+3I_2(g), \Delta H_{rxn}=-290.0 kJ

According to reaction, 2 moles of nitrogen triiodide gives 290.0 kilo Joules of heat on decomposition ,then 0.05063 moles of nitrogen triiodide will give :

\frac{-290.0 kJ}{2}\times 0.05063=-7.34 kJ

-7.34 kilo Joules is the change in enthaply when 20.0 grams of nitrogen triiodide decomposes.

3 0
3 years ago
Other questions:
  • Using the particle-in-the-box model for the hydrogen atom and treating the atom as an electron in a one-dimensional box of lengt
    14·1 answer
  • Which of the following is true regarding nuclear fission and nuclear fusion?
    5·2 answers
  • What is the descriptions of gas please<br><br><br><br> THANKS!!!!
    15·2 answers
  • Elemental analysis of caffeine yields the following results: 49.49% C, 5.15% H, 28.87% N, and the remainder is O. What is the mo
    14·1 answer
  • How many grams of CO2 will be produced from 12.0 g of CH4 and 133 g of O2 ?
    7·1 answer
  • Chemistry help please
    15·1 answer
  • Salt dissolves easiest in
    9·2 answers
  • 2C6H6+15O2 12CO2+6H2O<br><br> HOW MANY GRAMS OF H2O ARE EQUIVALENT TO 30 MOLES H20?
    15·1 answer
  • The solubility for KCl is 60 g at 40 C. If a solution of KCl contains 79.5 g, is the solution saturated, unsaturated, or supersa
    7·1 answer
  • The surfaces of leaves contain guard cells that open and close the stomata.
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!