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
Olin [163]
3 years ago
10

ANSWER FAST PLZ 25 POINTS!!!!!!!!!!!!!!!!!

Chemistry
1 answer:
dybincka [34]3 years ago
8 0
I pretty sure it’s level 3
You might be interested in
Describe the formation of ions by electron loss or gain
Ronch [10]

Explanation:

Ions form when atoms gain or lose electrons. This is so that they form a full outer shell of electrons. When an atom gains electrons it becomes a negative ion, because electrons are negatively charged. For example, all halogens (group 7 or 17) form negative ions as they gain an electron forming a 1- charge. When an atom loses electrons it becomes a positive ion, as it is losing some negative charge from the electrons. This would be for example, alkali metals (group 1) which lose an electron to form a positive ion with a 1+ charge, (ALL metals form positive ions).

6 0
2 years ago
- a) write the formula unit of calcium fluoride.
san4es73 [151]

Answer:

Practice

Look at the pictures and write about Faris's day. Use time words

35words 40words * 50 words ***

TUD

Writing checkout

Olused capital letters at the beginning of sentences. Olsusea finger espace between e

the pictures (I will describe it by words)first picture the boy returns from school the sec picture is I return and eat with the family and the third picture is I played with my sister and the fourth is I watch TV with my siblings and the last picture is I take the book and study ,in order write a story using this pictures that I describe it.

6 0
3 years ago
How much heat in joules is required to heat a 43g sample of aluminum from an initial temperature of 72˚F to a final temperature
Stels [109]
The first step to answering this item is to convert the given temperatures in °F to °C through the equation,

   °C = (°F - 32)(5/9)

initial temperature: 72°F

    °C = (72 - 32)(5/9) = 22.22°C

final temperature: 145°F
   
    °C = (145 - 32)(5/9) = 62.78°C

Substituting to the equation,

    H = mcpdT
    
    H = (43 g)(0.903 J/g°C)(62.78 - 22.22)
   
   H = 1574.82 J

<em>Answer: 1574.82 J</em>
3 0
3 years ago
PLS HELP NUMBER 14 I WILL REWARD BRAINLIEST IF ITS RIGHT BUT EXPLAIN PLZ :)
Ksivusya [100]
<h2>Hey There!</h2><h2>_____________________________________</h2><h2>Answer:</h2>

\huge\boxed{\text{London / Van de Waals}}

<h2>_____________________________________</h2><h2>\huge\textbf{Van de Waals}</h2>

London Dispersion force or Van de waals force is a temporary attractive force which are the weakest and occur between nonpolar noble gases and same charges. This force is weaker because they have more electrons that are farther from the nucleus and are able to move around easier.

<h2>_____________________________________</h2><h2>\huge\textbf{Dipole-Dipole}</h2>

Dipole force is present between the polar molecules. Polar molecules are those molecules which have slightly negative and slightly positive charge. Dipole-dipole forces are attractive forces between the positive end of one polar molecule and the negative end of another polar molecule.

<h2>_____________________________________</h2><h2>\huge\textbf{Hydrogen Bonds}</h2>

It is a special type of dipole force present between polar molecules, it is formed between Hydrogen atom which forms positive ion, and the other negative ion. It results from the attractive force between a hydrogen atom covalently bonded to a very electronegative atom such as a N, O, or F atom. The hydrogen bond is one of the strongest intermolecular attractions, but weaker than a covalent or an ionic bond.

<h2>_____________________________________</h2><h2>Best Regards,</h2><h2>'Borz'</h2><h2 />
7 0
3 years ago
Which of these is an element<br> A. Sugar <br> B. Salad. <br> C. Potassium <br> D. Water
lapo4ka [179]
(C)Potassium is an element.......
6 0
3 years ago
Read 2 more answers
Other questions:
  • A 20.0 g piece of a metal is heated and place into a calorimeter containing 250.0 g of water initially at 25.0 oC. The final tem
    10·2 answers
  • Qué trabajo realiza una mujer si arrastra una caja y aplica una fuerza de 300 newtons, desplazándola a 2 metros?
    14·1 answer
  • Which of the following solutions will have the lowest boiling point?
    15·1 answer
  • Your window thermometer shows that the temperature outdoors is 87.3°f. how should you report this temperature to your friend in
    10·1 answer
  • Which two elements will most likely form an ionic bond?
    15·2 answers
  • What are 3 characteristics of a mixture?
    6·1 answer
  • The decomposition of potassium chlorate yields oxygen gas. If the yield is 85%, how many grams of KClO3 are needed to produce 15
    5·2 answers
  • Fine the mole. 2.41 x 10^24 molecules CO2
    13·1 answer
  • I'll give 40 pts for this one but pls help me....
    9·1 answer
  • In the Galapagos Islands, finches on different islands have beaks of different shapes, which help them gather the food that grow
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!