Answer:
density equals weigt divided by volume
Explanation:
[tex]density = \frac{m}{v} [/tex]
What are the FOUR major biogeochemical cycles upon which all life depends?
Answer:
Some of the major biogeochemical cycles are as follows: (1) Water Cycle or Hydrologic Cycle (2) Carbon-Cycle (3) Nitrogen Cycle (4) Oxygen Cycle. The producers of an ecosystem take up several basic inorganic nutrients from their non-living environment.
Explanation:
Can someone please help me. Like right now please
Answer:
3rd law
Explanation:
when two objects interact, they apply forces to each other of equal magnitude and opposite direction.
The Texas Hill Country ecosystem supports a variety of organisms. Animals such as owls, coyote, snakes and hawks compete for small animals for food. What might happen if the population of these predators became too large? The predators would share the prey population equally among all of the predator species. The predators would begin to eat plants rather than their usual prey. The predators would have more offspring of great size. The predators would consume the prey population faster than it could be replaced.
Answer:
The predators would consume the prey population faster than it could be replaced.
Explanation:
According to Oxford dictionary; an ecosystem is "a biological community of interacting organisms and their physical environment."
An ecosystem is a self supporting unit that is composed of living and non living parts. The ecosystem should be self sustaining.
In the particular case mentioned in this question, when the predator population becomes so large, they will steadily diminish the prey population faster it can be replaced thereby distorting the balance of the ecosystem.
The reaction of perchloric acid (HClO4) with lithium hydroxide (LiOH) is described by the equation: HClO4 + LiOH → LiClO4 + H2O Suppose 100 mL of perchloric acid is neutralized by exactly 46.9 mL of 0.75 M lithium hydroxide. What is the concentration of the perchloric acid?
Answer:
[HClO₄] = 0.35 M
Explanation:
Neutralization reaction is:
HClO₄ + LiOH → LiClO₄ + H₂O
In this case, we have a titration between a weak acid and a strong base.
In chemistry it is also called an acid base equilibrium.
HClO₄ + H₂O ⇄ ClO₄⁻ + H₃O⁺ Ka
The weak acid is firstly neutralized by the strong base, in order to have a buffer solution before the equivalence point.
When we reach the equivalence point, mmoles of acid = mmoles of base and there is a formula to determine it so:
M acid . Volume of acid = M base . Volume of base
M acid . 100 mL = 0.75 M . 46.9 mL
M acid = (0.75 M . 46.9 mL) / 100 mL → 0.35 M
The measured amount of product obtained from a chemical reaction
is the.
Write a summary of the following Physical and Chemical Properties
Answer:
The physical properties of matter are those characteristics that can be measured without altering the atomic structure, while the chemical properties of matter are those characteristics that result in a change in the atomic structure.
put some ice in a clean glass. examine it every 3 minutes for half oan hour . DIscribe what happens to the ice
Answer:
the ice starts melting and turns into water
Pb(NO3)2(aq)+2KCI(aq)------- PbCl2(s)+2KNO2 (aq). how many grams of PbCl2 solution will react with a 0.46L of a 0.101m KCI solution
Answer:
6.46g of PbCl2 are produced
Explanation:
The PbCl2 will not react, is a product of the reaction. The question must be say how many grams of PbCl2 will be produced
Based on the chemical reaction:
Pb(NO3)2(aq)+2KCI(aq) → PbCl2(s)+2KNO2 (aq)
1 mole of PbCl2 is produced when 2 moles of KCl are reacting.
To solve this question we must find the moles of KCl that will react. With these moles we can find the moles of PbCl2 and the grams produced using its molar mass:
Moles KCl:
0.46L * (0.101moles / L) = 0.04646 moles KCl
Moles PbCl2:
0.04646 moles KCl * (1mol PbCl2 / 2mol KCl) =
0.02323 moles of PbCl2 are produced
Mass -Molar mass PbCl2: 278.106g/mol-
0.02323 moles * (278.106g / mol) =
6.46g of PbCl2 are producedhi so can help me with something
What processes and involved in the creation of sedimentary rock? Please help
Answer:
yuhhhhhhhhhhh
Explanation:
What is Hess's law?
A. Hess's law states that the enthalpy of a reaction changes with
temperature
B. Hess's law states that the enthalpy of a reaction does not depend
on the reaction path.
C. Hess's law states that only changes in enthalpy of a reaction can
be known.
D. Hess's law states that the enthalpy of a reaction depends on the
reaction path
Answer:
B. Hess's law states that the enthalpy of a reaction does not depend
on the reaction path.
Explanation:
How do river systems, watersheds, and divides interact?
Answer:
They all end up in the oceon
Explanation:
Answer:
ok
Explanation:
i think they will all end up in ocean
SEP Analyze Data Which two columns have identical data? What do these two columns suggest about the identity of elements?
Answer:
The two columns which have identical data are the Atomic number and the number of protons column. This indicates that the atomic number is equivalent to the number of protons in an element.
Explanation:
Atomic Number is given as the number of electrons in an element. As the number of electrons is required to be equal to the number of protons, for the element to exist in the neutral state. This indicates that the atomic number of an element can also be considered equal to the number of protons in that element.
Why is there a bond between the ions in potassium chloride
Answer:
Explanation:
When the two atoms are in contact, potassium transfers its outer electron to chlorine which readily accepts it, resulting in both atoms achieving a state of eight outermost electrons. With this electron transfer, the ionic bond in KCl is formed.
Hope this helped!!!
Potassium has just one valence electron and Chlorine has 7 electrons, Chlorine needs just one atom to complete its octet which is provided by Potassium atom for formation of Potassium Chloride (KCl).
What is Chemical Bonding?Chemical bonding is the formation of chemical bonds present between two or more atoms or molecules which give rise to new compound. Bond is formed from electrostatic force present between oppositely charged ions like in ionic bonds or by sharing of electrons like in covalent bonds.
There are two types of Chemical Bonding:
1. Ionic Bonding
It is formed between opposite charged particles like Anion (negatively charged) and Cation (Positively charged) by the strong force of attraction.
For example, KCl formed by the ionic bond formation present between Potassium and Chlorine
2.Chemical Bonding
It is formed between two atoms for completing its octet by sharing of electrons.
For example, [tex]H_2[/tex] formed by sharing the electrons to complete its electronic configuration.
Thus, Potassium has just one valence electron and Chlorine has 7 electrons, Chlorine needs just one atom to complete its octet which is provided by Potassium atom for formation of Potassium Chloride (KCl).
Learn more about Chemical Bonding, here:
https://brainly.com/question/15444131
#SPJ2
structure of periodic table explain
Explanation:
Elements are arranged from left to right and top to bottom in order of increasing atomic number. ... The number of electrons in a period increases as one moves down the periodic table; therefore, as the energy level of the atom increases, the number of energy sub-levels per energy level increases.
How many moles are in 5NO3?
Answer:
200
Explanation:
more molecules thats all i know
which two things cause the orbits of the planets to be the nearby circular
Inertia
gravity
electricity
magnetism
Answer:Gravity and inertia
3. How are natural selection and selective breeding related?
can someone help?
Answer:
In natural selection, organisms adapt to the environment to best suit nature's needs to survive. In selective breeding, it's as if nature were humans and the humans can choose which organisms can survive and die. They do it so they can develop organisms with desirable characteristics.
Cells need a structure to separate their genetic material from the rest of the cell. This structure is the
cell membrane.
vacuole
cytoplasm
nucleus.
Answer: Nucleus
Explanation: It is the nucleus because the nulceus holds the chromosomes of the cell.
can send me the answer plzzz
Answer: In balancing any chemical equations, the number of atoms of each elements on the reactant side is equals to the number of atoms of the elements on the product side.
Explanation:
Balanced Chemical equations are those equations that has the equal number of atoms of elements on both the reactants and the product sides. To ensure that the chemical equations are correctly balanced the following steps should be observed.
--> identify the elements on the reactant side and on the product side
--> identify the number of atoms of each elements.
--> multiply the number of atoms with the number that will give you a coefficient that will make both the reactant and product sides equal.
--> place the new numbers infront of the elements or compounds.
--> A final check is done to know if the equation is balanced.
From the above steps, the balanced equation of the above questions are listed below:
1.) AlBr3 + 3K ---> 3KBr + Al
2.) FeO + PdF2 --> FeF2 + PdO
3.) P4 + 6Br2 --> 4PBr3
4.) 2LiCl + Br2 --> 2LiBr + Cl2
5.) PbBr2 + 2HCl --> 2HBr + PbCl2
6.) 2CoBr3 + 3CaSO4 --> 3CaBr2 + Co2(SO4)3
7.) 2Na3P + 3CaF2 --> 6NaF + Ca3P2
8.) 2Mn + 6HI --> 3H2 + 2MnI3
9.) Li3PO4 + 3NaBr --> Na3PO4 + 3LiBr
10.) CaF2 + Li2SO4 --> CaSO4 + 2LiF
11.) 2HBr + Mg(OH)2 --> MgBr2 + 2H2O
12.) 2LiNO3 + CaBr2 --> Ca(NO3)2 + 2LiBr
13.) AgNO3 + Li --> LiNO3 +Ag
14.) Si(OH)4 + 4NaBr --> SiBr4 + 4NaOH
15.) 2NaCN + CuCO3 --> Na2CO3 + Cu(CN)2
16.) 2NH3 + H2SO4 --> (NH4)2SO4
A scientist prepares 500.0 L of gas at 0.921 atm pressure
and 200.0°C. The scientist transfers the gas into a tank
where it cools to 20.0°C and has a pressure of 30,0 atm.
What is the volume of the gas under these conditions?
I
Answer:
200.0°C.
Explanation:
The resulatant volume of gas under given conditions is 9.49 liters.
What is ideal gas equation?Ideal gas equation gives idea about the behavior of gases at different conditions and it will be represented as:
PV = nRT, where
P = pressure in atm
V = volume in L
n = moles of gas
R = universal gas constant = 0.082 L.atm/K.mol
T = temperature in K
First we calculate the moles of gas by putting the values according to the first condition in the above equation and we have
n = (0.921)(500) / (0.082)(473) = 11.86 moles
Now we calculate the volume of gas by using the above equation and details of the second condition as:
V = (11.86)(0.082)(293) / (30) = 9.49 L
Hence resultant volume of the gas is 9.49L.
To know more about ideal gas equation, visit the below link:
https://brainly.com/question/555495
#SPJ2
explain in 3 complete sentences
Answer:Air in high pressure systems moves in an anticlockwise direction (in the southern hemisphere), while air in low pressure systems moves in a clockwise direction due to the rotation of the Earth. At the surface of the Earth air flows from high pressure systems into low pressure systems.
Explanation:
Warm air rises, creating a low pressure zone; cool air sinks, creating a high pressure zone. Air that moves horizontally between high and low pressure zones makes wind.Smaller pressure systems create localized winds that affect the weather and climate of a local area.
GUYS HELP PLS QUICK LOTS OF POINTS AND BRAINLIEST!
A 0.250 M solution was prepared from 135 mL of a 7.00 solution. What volume of water (in mL) was required for dilution?
Answer:
385
Explanation:
0.250m Converted to 250 mL then 250+135+ the answer
I'm not sure?
A woman needs a kidney transplant. The best candidate to donate a kidney to her is her
es -0)
A)
Co-Worker.
B)
daughter.
09
friend.
D
husband.
Answer: B
Explanation:
How many moles are in 564 grams of copper
Answer:The answer is 63.546.
Explanation: The answer is 63.546. We assume you are converting between grams Copper and mole. You can view more details on each measurement unit: molecular weight of Copper or mol. The molecular formula for Copper is Cu. The SI base unit for amount of substance is the mole. 1 grams Copper is equal to 0.015736631731344 mole
Answer:
5.64 of copper
Explanation:
Given: 564 grams of copper
To find: in copper
Solution: If 1 grams Copper = 0.01 mole,
Then, 564 grams = multiply 564 and 0.01 mole
564 × 0.01 = 5.64
Therefore, there are 5.64 of copper in 564 grams
giving 15 points + brainliest to the correct answer
pic is attached
no scams and links pls
Answer:
1, mass is like how big it appears and weight could be small and be more weight then something with alot of mass
2, sorry i dont know
3, Jupiter you would weigh the most and the least is mars
4, the sun and if it was changed all the plants would eventually collide and go out of order
5, gravity, electricity and magnetism
Explanation:
On an as yet undiscovered planet, the atmo-
sphere is composed of a mixture of 79% argon
and 20% oxygen (volume percentage) along
with trace amounts of other gases, including
CO2, Kr, and Ne. An enterprising student on
that planet wishes to sell the equivalent of he-
lium balloons to small children. Heliun is not
available.
Which of the gases
1) krypton
II) carbon dioxide
III) methane
IV) propane
V) nitrogen
VI) carbon monoxide
would be an acceptable replacement so that
the balloons will float in that atmosphere?
Answer:
7 and carbon dioxide good luck with the answer
Explain how the cardiovascular system helps your body function
Answer:
The blood circulatory system (cardiovascular system) delivers nutrients and oxygen to all cells in the body. It consists of the heart and the blood vessels running through the entire body. The arteries carry blood away from the heart; the veins carry it back to the heart.
Explanation:
You're welcome!
Stay Safe!
Will mark brainly
ASAP thank you if you solve this
______________________________ is the attraction amongst molecules that are dissimilar.
A.) Transpiration
B.) Cohesion
C.) Adhesion
D.) Polarity
Answer:
ily
Explanation:
5. What is the chemical difference between acids and bases? (only answer if you know and don’t comment some link)
Answer:
acid donates protons while base accept protons
Explanation: