Answer:
wait what?
Explanation:
Answer:
PLS EXPLAINNNNNNNNNNNNN
Give an example of an amorphous solid.... PLS HELP ON THIS
Explain why the elements in group 7 have 7
valence electrons.
Answer:
The periodic table was made that way by the scientists who created it
Explanation:
to make things easier for the users.
Need help ASAP!!!!
Which of the following represents a chemical change?
A. Rocks being smoothed by rapid water movement
B. The pink color of a rose
C. Iron's attraction to a magnet
D. Decomposition of stone due to acid rain
Answer:
D.
Explanation:
Decompostion of stone due to acid rain
Answer:
D
Explanation: the rest are either traits or physical changes
D is a chemical reaction
Help only if you know the answer
Answer:
velocity
Explanation:
Which expressions are equal to 675? 700 – 25 O 700 – 75 O 600 + 75 O 634 + 31 500 275
Answer:
30
Explanation:
Answer:
The first one, The third one.
700-25, 600+75!
Explanation:
Please help I will mark brainliest!!!
Answer:
In the order goin left to right:
kinetic energy, grav pot. energy, deceleration, speed, acceleration, potential
Explanation:
Using the amount of each element you calculated in part A, calculate the ratios of the elements to each other to determine the empirical formula.
Select the correct answer from each drop-down menu to complete the empirical formula.
Answer:
C2H6O1
Explanation:
Divide the number of moles of each element by the smallest number of moles, which is 9.69 moles.
Divide the number of moles of carbon by 9.69:
19.3 mol/ 9.69 mol ≈ 2.
Divide the number of moles of hydrogen by 9.69:
57.5 mol/ 9.60 mol ≈ 6.
Divide the number of moles of oxygen by 9.69:
9.69 mol/ 9.69 mol = 1.
So, the empirical formula of the unknown compound is C2H6O.
The correct tool for measuring mass is ...
A. electronic balance.
B. ruler.
C. water displacement.
D. graduated cylinder.
Answer:
electronic balance
it should be electronic balance
What charge would you expect for an formed by P?
O +2
0-2
O +3
O-3 Look at picture
ASAP please will mark as brainlist don’t got much time
Help please and thank you
Crest
hope that helps^^
please answer fast! Which of the following statements are false?
A: In a chemical change, atoms are rearranged to make new compounds.
B: The same element is present before and after a chemical change.
C: A physical change does not produce an entirely new substance.
D: A chemical property can be observed without changing the identity of the substance.
I believe it is C.
Hope this helps!
What is the molar mass for dinitrogen trioxide, N₂O₃?
(note molar mass of N =14 g/mol and O =16 g/mol
A chemical reaction in which an uncombined element replaces an element that is part of a compound is called a
Answer:
A chemical reaction in which an uncombined element replaces an element that is part of a compound is called a simple substitution reaction or simple displacement reaction.
Explanation:
A simple substitution reaction or simple displacement reaction, called single-displacement reaction, is a reaction in which an element of a compound is substituted by another element involved in the reaction. The starting materials are always pure elements and an aqueous compound. And a new pure aqueous compound and a different pure element are generated as products. The general form of a simple substitution reaction is:
AB + C → A +BC
where C and A are pure elements; C replaces A within compound AB to form a new co, placed CB and elementary A.
So, in a Single replacement reaction an uncombined element replaces an element.
A chemical reaction in which an uncombined element replaces an element that is part of a compound is called a simple substitution reaction or simple displacement reaction.
I am a metal that has 3 valence electrons and 123 neutrons
Answer:
The answer is Boron
Explanation:
If the concentration of sugar in water is determined to be 45 g/100 ml and 135 g of sugar was used to make the solution how much water was used?
Answer:
300g of water was used to make the solution
Explanation:
In the sugar solution, there are dissolved 45g of sugar in 100mL of water. The conversion factor is 45g Sugar = 100mL water. That means when 135g of sugar are used the amount of water is:
135g sugar * (100mL water / 45g sugar) =
300g of water was used to make the solutionMacoy Inda
ns: Read and analyze each item carefully and choose and encircle the letter of the correct answ
Tven.
Which of the following is NOT a special product?
12x + 5)(2x - 5)
B. (m + 3) (m + 3)
(m. 5)(
m5)
D. (x-2)(x-2)(x-2)
What is the product of squaring the binomial (5x + 4)??
А. ЛОх2 + 16
B. 25x2 + 16
C. 25x2 + 40x + 16
D. 25x2 + 20x + 16
One of the factors of x2 + 2x – 15 is (x + 5). What is the other factor?
Arx+3)
B. (x-3)
C/(x-5)
D. (x + 5)
Which of the following gives a product of 9y2 – 16?
A. (3y + 4) (3y + 4)
B/(3y + 4) (3y - 4)
C. (3y-2)(3y - 8)
D. (3y + 2)(3y + 8)
Which of following is the product of (n-3) (n - 3)(n-3)?
. n3 – 27
B.n
3-9n2 + 27n + 27
C. n3 + 27
D. n3 + 9n2-27n - 27
Find the missing terms: (x + _) (x + _) = x2 + 18% + 81.
B. -9,-9
D. 9,9
C.) 4,4
The area of the square is t? – 18t + 81 square units. Which expression represents the ler
-4, -4
Answer:
? the question isn't clear
Explanation:
Select all the element(s) from the periodic table shown that will form an ionic compound with a metal M and a nonmetal X and a formula unit of M3X2
Answer:
Sulfate- SO4^2-Sulfite- SO3^2-Permanganate- MnO4Carbonate- CO3^2Explanation:
CARRY ON LEARNING.
The elements in the periodic table that can form an ionic compound with a metal M and a nonmetal X with a formula unit of M3X2 are elements of group 2 and group 15.
The elements of group 2 are metals that have a valency of 2 while the elements of group 15 are nonmetals that have a valency of 3. This means that a compound formed between elements of group 2 and group 15 will be ionic with the formula unit M3X2.
The elements of group 2 are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra) while the elements of group 15 are nitrogen (N), phosphorus (P), arsenic (As), antimony (Sb) and bismuth (Bi).
These elements listed above can combine with each other to form ionic compounds of formula unit M3X2. A typical example of this is Mg3N2.
Learn more: https://brainly.com/question/17274608
Electrotonic configuration of potassium 19K ion equal the Electrotonic configuration of
1) ⁸0
2) ¹¹Na
3) ¹⁸Ar
4) ¹⁷C1
Individual solute particles are broken apart from the solid by these particles. * a Solution b Insoluble c Solvent d Compounds
Answer:
Individual solute particles are broken apart from the solid by the;
c. Solvent
Explanation:
A solution is the homogeneous mixture that is made up of two or more substances formed by dissolving a substance which can be a solid, liquid or gas in another substance known as the solvent which normally the larger part of the fraction of the solution than the solute and can also be a solid, liquid or a gas
In a solution the solvent particles serves to brake of and disperser parts of a solid solute to form a more or less homogeneous mixture
Therefore, the solute particles are broken by the solvent particles in a solution
What does the word photosynthesis mean?
PIC IS BELOW!
What can describe the form of precipitation
Do you have a picture/answer choices?
Some forms of precipitation are rain, sleet, snow, and hail, if that's what you were asking for.
What happens when Mg forms an ionic bond?
o it gains one electron and becomes a -1 anion
o it loses one electron and becomes a +1 cation
o It loses 2 electrons and becomes a +2 cation
It shares electrons with the other atom in the bond
Look at picture
ASAP please will mark as brainlist don’t got much time
Answer:
it gains one electron and become a -2 anion...
it is the right answer..
above answer is right explanation
Why is Pepe the frog sad?!?!?!
Answer:
pepe needs kisses.
Explanation:
you want to kiss pepe. you want to soooo bad.
Answer:
his dad left to get milk and his mother commited toaster bath
Explanation:
Which type of data relies on the senses or things you can't measure
Answer:
Nominal data
Explanation:
This is a type of data in which its set of values don't have a nominal arrangement.
For example, the color of a football jersey can be deemed as a nominal data type as we can’t distinguish one color from others. Like It is impossible to declare that ‘Pink' is greater than ‘Yellow'.
Develop a hypothesis to explain why bubbles exhaled by scuba divers underwater expand as they float up to the surface of the ocean.
Answer:The bubbles exhaled by a scuba diver grow as they approach the surface of the ocean. The pressure exerted by the weight of the water decreases with depth, so the volume of the bubbles increases as they rise.
Explanation:
Which statement best helps to explain the observation that NH3(1) boils at -28°C, whereas PH: (1) boils at -126°C?
A
The dispersion forces in NH3 are weaker than the dispersion forces in PH3.
B
The dispersion forces in NH3 are stronger than the dipole-dipole forces in PHz.
С
NH3 has hydrogen bonding that is stronger than the dipole-dipole forces in PH3
D
NH3 has hydrogen bonding that is weaker than the dipole-dipole forces in PH3.
Answer:
C.
Explanation:
Which type of weathering occurred to form the Malham Pavement
Answer:
carbonation
Explanation:Please dont delete my answer again cause its correct, I had the same question on my test so I know its righ!!!!
Which of the following models a single replacement reaction?
What happens to glucose in the body of a healthy person put steps
Answer:
the stomach and small intestine absorb the glucose and then release it into the bloodstream once in the bloodstream glucose can be used immediately for energy
Which star type has the shortest life span?
1. Massive blue stars
2. Supermassive blue giants
3. Medium orange stars
4. Low mass white stars