Answer:
In a balanced ecosystem, the largest population is the PRIMARY PRODUCERS, and the smallest is the TERTIARY CONSUMERS. In a balanced ecosystem, the largest population is the PRIMARY PRODUCERS, and the smallest is the TERTIARY CONSUMERS. This answer has been confirmed as correct and helpful.
Explanation:
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
(Please Help)
when adding a coefficient to a molecule what must you do to all atoms of that molecule?
A.Only multiple the first atom of the coefficient
B. multiply all of the atoms by the coefficient
C. Add the coefficient and the subscripts together, then divide them all by 2.
Answer:
B
Explanation:
Trust me I've had problems like these
2. Calculate the number of moles of propane you have in 5.78 x1024 molecules of propane = CH
Answer:
Molar mass of C3H8 = C 3 (12.01 g/mol) = 36.03 (g/mol)
H 8 (1.008 g/mol) = 8.064 (g/mol)
44.09 (g/mol)
74.6 g propane x 1 mole propane x 6.022 x 10
23
molecules
44.09 g propane 1 mole propane
= 1.02 x 10
24 molecules propane
Explanation:
6.0x10^26 molecules of sodium hydroxide
Answer:
6E26
Explanation:
I don't understand this problem
?Mg+?N2=?Mg3N2
Answer:
Magnesium nitride, which possesses the chemical formula Mg3N2, is an inorganic compound of magnesium and nitrogen. Moles H2O = 75.0 grams / 18.02 g/mol. This reaction is used to prove that air contains nitrogen gas. Which equation would have the same coefficients in the same order as 2CO2 + 3H20 → C2H6O + 3O2?
Explanation:
Hopefully this helps :)
Brainiest please I need 5 more
Answer:
yeah im only answering so she can get brainliest
Explanation:
___________ mL = 2.2 L
Answer:
2,200 mL I believe it is.
Answer:
2,200 is the answer of your question
Which substance is made up of molecules that can have temporary dipoles?
a. CO2
b. NH3
c. N2
d. H2O
Answer:
Molecules that contain dipoles are called polar molecules and are very abundant in nature. For example, a water molecule (H2O) has a large permanent electric dipole moment.
so it is (D). H2O
Explanation:
Based on the nature of intermolecular forces, the molecule that can have a temporary dipole is nitrogen gas, N2.
What are temporary dipoles?Temporary dipoles are created when electrons revolving around the nucleus, spontaneously come into close proximity resulting in an uneven distribution of electrons, thereby creating a temporary dipole due to unbalanced charges.
Temporary dipoles can initiate weak intermolecular attraction between neighboring molecules such as van der Waal's forces.
Temporary dipoles can occur in non-polar molecules such as nitrogen gas resulting in the ability of nitrogen to be liquefied.
Therefore, the molecule that can have a temporary dipole is nitrogen gas, N2.
Learn more about temporary dipole at: https://brainly.com/question/1454795
Unbend a paper clip such that
you have
a long, straight piece of metal. Bend one of the initially straight sections
back and forth several times. Does it become easier or harder to bend
the paper clip in the same spot? What happens if you keep bending the
paper clip back and forth?
uz RS nyodag
Metals have a crystalline in nature, and a consistent shift in stress causes the structure to alter, causing the metal to stiffen and fracture. This is known as metal fatige. The bending causes that to occur.
What is metal ?A metal is a substance that has a shiny look when freshly processed, polished, or shattered, and conducts electricity and heat rather effectively. Generally speaking, metals are malleable and ductile.
These characteristics are the outcome of the metallic link that exists between the metal's atoms or molecules.
The earth's crust is where most pure metals are found. They are discovered in ores, which are solid materials from which metals and minerals may be extracted. The majority of the planet's iron mass, which makes up over a third of its mass, is located in its core.
Thus, Metals have a crystalline in nature, and a consistent shift in stress causes the structure to alter.
To learn more about metal, follow the link;
https://brainly.com/question/18153051
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___________ is the least reactive metal.
i. Silver
ii. Iron
iii. Gold
iv. Sodium
Predict the shape of the molecule around the
indicated atom.
A. linear
B. trigonal planar
C. tetrahedral
D. bent
In Period 2, as the elements are considered from left to
right, there is a decrease in
A. Nonmetallic character
b metallic character
C atomic mass
D ionization energy
Answer:
it will option B ,hope it helps
Please help!! I'll name you brainliest!!
Answer:
lost is the answer to this question but if I am wrong I am so sorry for that
Calcium is a metal.
Word equations for two reactions of calcium are shown.
calcium + oxygen
→ calcium oxide
calcium + hydrochloric acid → calcium chloride + hydrogen
The equation for the reaction of dilute hydrochloric acid with calcium is
Ca + 2HCl → CaCl2 + H2
Calculate the maximum mass of calcium chloride produced by reacting 8.02 grams of
calcium with excess hydrochloric acid.
relative atomic mass: Ca = 40.1
relative formula mass: CaCl2 = 111.1
Show your working.
Answer:
22.22 g
Explanation:
The balanced reaction equation is;
Ca(s) + 2HCl(aq) → CaCl2(aq) + H2(g)
Number of moles of calcium reacted = 8.02g/40.1g/mol = 0.2 moles of Calcium
From the reaction equation;
1 mole of Ca yields 1 mole of CaCl2
Hence 0.2 moles of Ca also yields 0.2 moles of CaCl2
Mass of calcium chloride produced = number of moles * molar mass
Mass of calcium chloride = 0.2 moles of CaCl2 * 111.1g/mol = 22.22 g
2. Find the molar mass for:
FeCl2 • 5H20
Answer:
Molar mass = 216.8254 (approx.)
Explanation:
Given:
FeCl2 • 5H20
Find:
Molar mass
Computation:
Atomic mass
Fe = 55.845
Cl = 35.453
H = 1.00794
So,
FeCl2 • 5H20
55.845 + 2(35.453) + (2)5(1.00794) + 5(15.999)
55.845 + 70.906 + 10.0794 + 79.995
Molar mass = 216.8254 (approx.)
How many moles are there in 3.9 grams of potassium
Answer:
0.0997 mol K
Explanation:
First of all, the picture and your question do NOT match so I will solve for what you are asking for.
3.9g x 1 mol/39.10 g = 0.0997 mol K
The 39.10 grams is the atomic mass of potassium
PLEASE HELPPPP!!! IM BEING TIMED
Based on Map 1, which statement describes the main cause of the
weather pattern known as the Arizona monsoon?
A)Much of the southwestern United States is desert.
B)Ocean water to the south of Arizona is warm.
C)Winds at this latitude tend to blow from west to east.
D)Land masses heat up more quickly than oceans.
Answer:
B)
Explanation:
This should be the correct answer, lmk if it's not
As in the given image, the weather pattern known as Arizona monsoon is caused by the winds at this latitude tend to blow from west to east. Thus, option C is correct.
What is Arizona monsoon?The Arizona Monsoon is a well-defined meteorological phenomenon that affects the southwest region of North America during the summer. It is scientifically referred to as a meteorological "singularity."
Arizona experiences its strongest wind flow during the winter months from the west or northwest, coming from California and Nevada. The winds change to a southerly or southeasterly direction as the summer months approach.
From the Pacific Ocean and the Gulf of Mexico, moisture moves northward. Statewide moisture conditions are drastically altered as a result of this alteration.
To refer more on Arizona monsoon, search here:
https://brainly.com/question/19580372
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Show how the limiting reactant is determined for 3.80 g of magnesium reacting with 12.5 g of oxygen.
Answer:
Magnesium is the limiting reactant.
Explanation:
The balanced reaction is:
2 Mg + O₂ ⇒ 2 MgO
By stoichiometry of the reaction (that is, the relationship between the amount of reagents and products in a chemical reaction), the following quantities participate in the reaction:
Mg: 2 molesO₂: 1 moleMgO: 2 molesBeing the molar mass:
Mg: 24.31 g/moleO₂: 32 g/moleMgO: 40.31 g/moleThen the following quantities of mass participate in the reaction:
Mg: 2 moles* 24.31 g/mole= 48.62 gO₂: 1 mole* 32 g/mole= 32 gMgO: 2 moles* 40.31 g/mole= 80.62 gThe limiting reagent is one that is consumed first in its entirety, determining the amount of product in the reaction. When the limiting reagent is finished, the chemical reaction will stop.
To determine the limiting reagent, it is possible to use the reaction stoichiometry of the reaction. You can use a simple rule of three as follows: If by stoichiometry of the reaction 32 grams of oxygen react with 48.62 grams of magnesium, 12.5 g of oxygen will act with how much mass of magnesium?
[tex]mass of magnesium=\frac{12.5 g of oxygen*48.62 grams of magnesium}{32 grams of oxygen}[/tex]
mass of magnesium= 18.99 grams
But 18.99 grams of magnesium are not available, 3.80 molesgrams are available. Since you have less mass than you need to react with 12.5 grams of oxygen, magnesium will be the limiting reagent.
Which element is most likely to have an oxidation number of +3?
Α. Ν
B. AI
C. Mg
D. S
Answer:
Option B because aluminum has valence 3±
Hold the slides for observation
how many moles are in 425g of KNO3?
Answer:
The answer is 101.1032
Explanation:
FOR 40 points!!!! I need the whole page finish !!!!!! Pleaseeeeee!!!!!!! I will five u brainlist !!!!!!
Bubbles are released when nitric acid is added to a potassium carbonate solution.
What is the net ion
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 percent composition of a mixture of 5.12g of O and 1.54g of N
Answer:
no lo sé bb 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100
Suppose you weigh the unknown substance on an electronic balance and find it has a mass of 445 grams. Analyzing the products of decomposition, you find that the masses of the elements in the sample are 232 grams of carbon, 58 grams of hydrogen, and 155 grams of oxygen. Finally, through further experimentation, you determine that the molar mass of the compound is 46.07 grams/mole.
Calculate the amount, in moles, of each component element in your substance. Use the periodic table to help you find the necessary molar masses.
____ moles of carbon
____ moles of hydrogen
____ moles of oxygen
Answer:
19.32 = moles of carbon
57.54 = moles of hydrogen
9.69 = moles of oxygen
Explanation:
232 g carbon × 1 mol C / 12.011 g C= 19.32 mol C
58 g hydrogen × 1 mol H / 1.008 g H = 57.54 mol H
155 g oxygen × 1 mol O / 15.999 g O = 9.69 mol O
Whats the correct answer ?
Identify the type of reaction that will occur with these reactants:
Fe(NO3)3(aq)+CaSO4(aq)
- synthesis
- decomposition
- single replacement
- double replacement
Answer:
double replacement (Mutual exchange of ions)
Explanation:
GOOD LUCK FOR THE FUTURE! :)
DUE IN 10 MINUTES PLZZZZ
Part IV: True/False
____ 38. The mass of the nucleus is small compared to the mass of the atom.
____ 39. Alpha particles would be harder to turn than Beta particles.
____ 40. Positive charge was spread all throughout the atom in the Rutherford Model.
____ 41. The Manhattan Project was located in New York for most of its duration.
____ 42. The cathode rays produced by Thomson were identical for all filaments.
____ 43. It is possible to know where an electron is and what path it is on.
____ 44. X-rays are produced when fast moving electrons strike phosphor coatings.
____45. All nuclear changes involve at least two reactants.
Answer:
true false true false true fake
Answer:
38. False
39. True
40. True
41. True
42. False
43. False
44. True
45. True
Explanation:
Note these are just my guesses they might not all be correct but I will do my best.
Hope this helps you at all! Feel free to correct me if I got any of them wrong :)
HELP . which kind of tides causes the highest and lowest tides ?
4 Fe + 6 H₂O + 3 O₂ → 4 Fe(OH)₃
Police found 10 grams of Fe(OH)₃ on the knife. Convert grams of rust (Fe(OH)₃) into grams of iron (Fe) to see if the knife contained enough to murder the butler.
345 g Fe
5.22 g Fe
7.34 g Fe
2.95 g Fe