For each problem listed in Column A, select from Column B the letter of the conversion factor that is needed to solve the problem. You may need to use more than one conversion factor to solve the problem.
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How many moles are there in 3.9 grams of potassium
Answer:
0.0997485824191857
Explanation:
Potassium in 1 mol is 39.0983.
Divide 3.9 by 39.0983.
How would you improve your experiment?
answer in 3 to 4 sentence
Answer:i will improve my my experiment by:
1.increasing the validity of that experiment
2.Improving of measurwment techniques
3.reduction of the simple bias
4.Blinding of the experiment
Explanation:
These can be achieved by doing these respectively,
1.Through considering the given time frame feo data collection and the experimental treat
2.Done by ensuring vessels are properly clibrated, are clean and ready to use as well as functioning
3.We can avoid this by doing convenience sampling and again ensuring target population arw properly defined.
4.we can avoid this by alerting the group members on the available group assignments and the data collectors.
Which is a mixture
H20
Salad
Table salt
Answer:
salad is a mixture this is the answer of the question
please mark ne has a brainliest
Where on the periodic table are metalloid elements most likely found?
A Along the stairstep line
B. Among the lanthanides and actinides
C. At the bottom
D. On the left side
D on the left side because if you look st periodic table it shows were most of the medallions are founf
Answer:
its the right side ik its not an option on here but its the right side on some
Explanation:
trust me
Please help! I really need help on this!
Answer:
I wanna say c
Explanation:
It makes the most sense, because non-metals don't produce an electrical current, and therefore aren't conductors.
1) LIOH + HBr à LIBr + H2O
If you start with 5mol of lithium hydroxide, how many moles of lithium
bromide will be produced?
In the USA 3.5 millions pounds of whole milk are used daily to make milk chocolate how many gallons of milk are used daily
Answer:
0.4193924945 million
Explanation:
3.5(0.119826427)
Don’t mind my cats fur :)
Answer:gas formation
Explanation:
Answer:
gas information The Monroe Doctrine was a United States policy that opposed European colonialism in the Americas. It argued that any intervention in the politics of the Americas by foreign powers was a potentially hostile act against the United States.[1] It began in 1823; however, the term "Monroe Doctrine" itself was not coined until 1850.[2]
U.S. President James Monroe
Secretary of State John Quincy Adams, author of the Monroe Doctrine
The Monroe Doctrine was issued on December 2, at a time when nearly all Latin American colonies of Spain and Portugal had achieved, or were at the point of gaining, independence from the Portuguese and Spanish Empires. It stated that further efforts by various European states to take control of any independent state in the Americas would be viewed as "the manifestation of an unfriendly disposition toward the United States."[3] At the same time, the doctrine noted that the U.S. would recognize and not interfere with existing European colonies nor meddle in the internal affairs of European countries.
President James Monroe first stated the doctrine during his seventh annual State of the Union Address to the Congress. The doctrine asserted that the New World and the Old World were to remain distinctly separate spheres of influence.[4] The separation intended to avoid situations that could make the New World a battleground for the Old World powers so that the U.S. could exert its influence undisturbed.[5] By the end of the 19th century, Monroe's declaration was seen as a defining moment in the foreign policy of the United States and one of its longest-standing tenets. The intent and impact of the doctrine persisted more than a century, with only small variations, and would be invoked by many U.S. statesmen and several U.S. presidents, including Ulysses S. Grant, Theodore Roosevelt, John F. Kennedy, and Ronald Reagan.
After 1898, the Monroe Doctrine was reinterpreted in terms of multilateralism and non-intervention by Latin American lawyers and intellectuals. In 1933, under President Franklin D. Roosevelt, the U.S. went along with this new reinterpretation, especially in terms of the Organization of American States.[6]
define Common ion effect
i need help with this question 20 points and brainiest if ur right
Answer:
The volume is 8 cm³
Hey How are you?
Explanation:
The melting of a glacier is an example of the interactions among which of Earth's spheres? geosphere, troposphere, cryosphere atmosphere, geosphere, cryosphere atmosphere, asthenosphere, biosphere hydrosphere, asthenosphere, atmosphere
Answer:
The melting of a glacier is an example of interaction among;
Hydrosphere, asthenosphere, atmosphere
Explanation:
The melting of a glacier is an example of the interactions among the Earth's cryosphere and hydrosphere
The cryosphere is described as the portions on Earth where water appears in solid (frozen) form such as glaciers, frozen grounds, snow covered land, sea ice, ice sheets, river ice, ice caps, etc.
The hydrosphere is all the forms water on a planet including, ice, liquid water and water vapor, therefore, the cryosphere is a part of the hydrosphere
The geosphere comprises the Earth's interior, including the asthenosphere, which is fluid and hot and therefore spread heat through both conduction and convection to the hydrosphere that raises the ocean temperatures and lead to glacier melting
The green house effect in the atmosphere results in global warming that raises the average temperature of the Earth which in turn raises the temperature of the oceans and the troposphere, resulting in melting of a glacier
Therefore, the melting of a glacier is an example of interaction among the hydrosphere, asthenosphere, and, atmosphere
How does Natural selection lead to the Evolution of bacteria?
Answer:
Bacteria can evolve quickly because they reproduce at a fast rate.
Explanation:
Bacteria can evolve quickly because they reproduce at a fast rate. Mutations in the DNA of bacteria can produce new characteristics. A random mutation might cause some bacteria to become resistant to certain antibiotics, such as penicillin.
How are seasons different North & South of the equator
Answer:
seasons experienced by the northern and southern hemisphere always differ by six months when it is summer in the northern hemisphere, it is winter in the southern hemisphere
Explanation:
Answer:
ohhhhhhh she -he was having a point
What is the mass of 3.00x10^23 particles of water? Water has a molar mass of 18.0 g/mol.
8.97 g H₂O
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightChemistry
Atomic Structure
Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.Stoichiometry
Using Dimensional AnalysisExplanation:Step 1: Define
3.00 × 10²³ particles H₂O
Step 2: Identify Conversions
Avogadro's Number
[Given] Molar Mass of H₂O - 18.0 g/mol
Step 3: Convert
Set up: [tex]\displaystyle 3.00 \cdot 10^{23} \ particles \ H_2O(\frac{1 \ mol \ H_2O}{6.022 \cdot 10^{23} \ particles \ H_2O})(\frac{18.0 \ g \ H_2O}{1 \ mol \ H_2O})[/tex]Multiply/Divide: [tex]\displaystyle 8.96712 \ g \ H_2O[/tex]Step 4: Check
Follow sig fig rules and round. We are given 3 sig figs.
8.96712 g H₂O ≈ 8.97 g H₂O
Examples of polar molecules
Answer:
Water, Ethonal, Ammonia, Sulfur Dioxide, and hydrogen sulfide.
as the train rushes down the hill the kinetic energy of the train _____ and the gravitational potential stored between the train and earth ________
A fluid is a liquid or a(n) _____.
Answer:
gas...............................
18. The mass of a metal ring is 116 g. You fill a graduated cylinder with 15 mL of
water and drop the ring into the cylinder. The water level rises to the 26 mL mark.
Which of the following could be the composition of the object?
Metal Composition Density (g/cm)
Silver
10.5
8.
Rhodium
12.41
Gold
19.32
Platinum
21.5
A
C
D.
19. Which of the following is an example of a chemical change?
1 The bread starts to rise in the oven.
II The egg white starts to turn into an opaque solid on the frying pan
III Steam from the shower starts to condense on the bathroom mirror.
A. I and II only
C. II and III only
B. I and III only
D. I, II, and III
20. Which of the following is an example of a physical change?
A. The silver ring is starting to tarnish.
B. The antacid helps calm your stomach.
C. A clump of clay is moulded into a bowl.
D. Milk goes sour when it is left out for days.
18 B 19 C and 20 A
cuz that's it I hope it helps you
yoo someone help please
Answer: can I suck your super long di ck or titis
Explanation:
Answer:
hi
Explanation:
What is the mass of 8.03 mole of NH3? (NH3 is 17g/mol)
Answer:
the mass of 8.03 mole of NH3 is 136.51 g
Explanation:
The computation of the mass is shown below:
As we know that
Mass = number of moles × molar mass
= 8.03 mol × 17 g/mol
= 136.51 g
Hence, the mass of 8.03 mole of NH3 is 136.51 g
We simply multiplied the number of moles with the molar mass so that the mass could come
How many grams of carbon are there in 100 g of carbon dioxide? Show your work.
Answer:
200 I would think..
Explanation:
Feel free to correct me if i'm wrong
Is there any multiple choice??
How many minutes are in 180,0 days?
Answer:
259,200 minutes
Explanation:
Urgent please help!!!
Describe what you think is your responsibility in taking care of the natural
world in which you live.
Answer:
Well I would say " I think my responsibility is recycling, gardening, picking up litter, and using less pollution. All of this stuff is very important. Sometimes, it's the tiny things that change the world for the better."
I hope this helped! Feel free to add your own little tweaks.
2. Clouds are
(a) tiny drops of water floating in air.
(b) mixture of dust and water vapour.
(c) particles of water vapour.
(d) rain drops in air.
3. Floods cause extensive damage to
(a) crops.
(b) property and human life.
(c) domestic animals.
(d) all of the above.
4. “Catch water where it falls” is the basic idea behind
(a) Recycling of water.
(b) Making dams to store water.
(c) Rain water harvesting.
(d) Condensation of water vapour.
5. In which of the following case evaporation of water will be slowest?
(a) A tray of water kept in sunlight.
(b) A kettle of water kept on a burner.
(c) A glass of water kept in a room.
(d) A bucket of water kept on rooftop.
Answer:
2 b
3d
4c
5c
Explanation:
please give brainlest
Urgent!
which element do you think has a greater mass? cadmium or zinc?
Answer:
zinc
Explanation:
Answer:
cadmium has a greater mass.
explanation:
zincs mass: 65.38
cadmiums mass: 112.411
Write a summary paragraph explaining limiting and excess reactants and how you can tell which is which.
Will mark as Brainliest if it's correct and if it's not copied and pasted from the internet :)
is CuO a covalent or ionic bond?
The electronegativity is less than 1.7, which would make it a covalent bond. But I am still not sure..
Answer:
it would be ionic
copper forms a cation and oxygen forms an anion
those charges represent the e-s that are transferred during bonding
oxygen is -2 so will accept 2 e-s to achieve noble gas configuration
Explanation:
Which factor affects the amount of gravitational potential orgy at object but
and the amount of kinetic energy an object has?
A mass
B. speed
C. height
D. particles
I need help
Answer:
Speed
Explanation:
Answer:
mass
Explanation:
your welcome
I really need the help in anyway...
Answer:
What substance changed physically under all three condition? Copper Wire
What substance changed chemically under all three condition? Steel Wool
What evidence indicates a chemical reaction is occurring? New gases are produced; A phase change has occurred; A color change
Select the three answers that are examples of a chemical reaction. The mixing of an acid and base shows an increase in temperature; after baking bread there is a new odor or smell; when hair is bleached it changes to a lighter color
Which data supports this inference? Baking soda dissolving; A gas formed, creating bubbles
Which experiment best shows evidence of energy being released in a chemical reaction? Heat and light are given off when paper is burned
Which experiment likely resulted in the formation of a precipitate? Two solutions are mixed together and a yellow solid forms
The BEST evidence for a chemical reaction is the formation of a new substance.
Explanation:
2. When heat and light are being given off, energy is being released. Paper burning is a chemical reaction b/c when paper is burnt, it is a new substance and the act can't be undone.
3. When a yellow solid forms, that solid is the participate.
4. You will for sure have a chemical reaction if a new substance is created.
5. Copper wire changed physically b/c the copper wire can be returned to its original condition in all of these situations and no new substance was formed. Steel Wool changed chemically b/c it can't be returned to its original state under any condition and new substances were formed every time.
6. New substances formed indicate a chemical reaction. A color change also is an indication of a chemical reaction.
7. When a substance can't be turned into its original position or a new substance is produced, a chemical reaction occurred.
