calculate the percentage by mass of oxygen in ammonium nitrate
Answer:
Percent composition of O is 48g80g×100%=60%
Plzzzzz helppppp it’s due already I’ll mark Brainly
The crack shown in the lithosphere was created by the movement of two or more tectonic plates. What is this crack called
Answer:
The lithosphere is made up of pieces of tectonic plates. These plates are constantly changing and move towards the mantle. Non-stop movement of tectonic plates causes stress on the earth's outermost layer i.e,the crust. When these stresses extends it leads to cause cracks called faults.
Explanation:
need help with physical changes
Answer:
I give u three in explanation
Explanation:
Crushing the can, stomping on the can, and squishing the can
12. Draw the lewis structure for the element to help you answer the question *
Answer:hope it helps
Explanation:
What type of energy is caused by positive and negative charges in matter
Answer:
Static electricity is the result of an imbalance between negative and positive charges in an object. These charges can build up on the surface of an object until they find a way to be released or discharged.
Explanation:
2. A chemical formula that shows the actual # and kinds of atoms present in one molecule of a compound is called
O A. ionic formula
O B. empirical formula
O C. molecular formula
PET plastic # 1 is used in water bottles and pop bottles. Why should they be recycled but not be reused?
They should be recycled but not reused because the "repeated use increases the risk of leaching and bacterial growth." Also, recycling PET plastic "results in reduced energy consumption, lower cost, and reduced environmental impact."
Plisss help I’ll give you brainless Waves can be identified in many different ways. Using the diagram below, identify
which property of a wave is shown by the part of the diagram labeled F?
Answer:
Wavelength
Explanation:
What does percent composition tell you about a substance?
O
A. It gives you the molecular formula of the substance,
B. It tells you what the substance is made of
O C. It gives you the total mass of the substance,
OD. It tells you how many moles are in the substance,
Answer:
Percent composition tells you which types of atoms (elements) are present in a molecule and their levels. Percent composition can also tell you about the different elements present in an ionic compound as well.ion:
Answer:
Explanation:hey
What is an orbital? How does it differ from an orbit?
Answer:
An orbit is the simple planar representation of an electron. An orbital refers to the dimensional motion of an electron around the nucleus in a three-dimensional motion. An orbital can simply be defined as space or the region where the electron is likely to be found the most.
Explanation:
Answer:
An orbital on the other hand is simply the probable area where one can expect to find the maximum density of electron presence within an atom. An orbit on the other hand is simply present in a body with a certain mass, while an orbital exists for an electron as well as an atom.
Thus, these are the simple differences between Orbit and Orbitals. It is important to know the major differences, you can check out the differences between Orbit and Orbitals below:
Differences between Orbit and Orbitals
Orbit Orbitals
An orbit is the simple planar representation of an electron. An orbital refers to the dimensional motion of an electron around the nucleus in a three-dimensional motion.
It can be simply defined as the path that gets established in a circular motion by revolving the electron around the nucleus An orbital can simply be defined as the space or the region where the electron is likely to be found the most.
The shape of molecules cannot be explained by an orbit as they are non-directional by nature. The shapes of the molecules can be found out as they are directional by nature.
An orbit that is well-defined goes against the Heisenberg principle. An ideal orbital agrees with the theory of Heisenberg’s Principles.
Thus, these are the major differences between Orbit and Orbitals.
Magnetic Quantum Number tells you what? how many orbitals are in s, p ,d?
what evidence is there of energy release after chemical reaction
Answer:
loss of mass
Explanation:
your welcome :)
What happen when? sodium oxide reacts with HCL
Answer:
Sodium oxide reacts exothermically with cold water to produce sodium hydroxide solution. A concentrated solution of sodium oxide in water will have pH 14. ... For example, it reacts with dilute hydrochloric acid to produce sodium chloride solution.
4 Which form of energy is stored in this
container?
(F) chemical energy
o electrical energy
(I kinetic energy
I sound energy
Answer: (F) chemical energy
Explanation:
Explain why no experiment is a failure.
Answer:
No experiment is a failure, because anytime you mess up, you learn from your mistakes and when you try the experiment again you can fix what you messed up on last time.
2) If I have an unknown quantity (# of moles) of gas at a pressure of 32 atm, a volume of 70 L, and a temperature of 25˚C. How many moles of gas are in the sample?
Answer:
91.5 mol
Explanation:
Volume of gas = 70 L
Temperature = 25°C
Pressure = 32 atm
Moles of gas = ?
Solution:
The given problem will be solve by using general gas equation,
PV = nRT
P= Pressure
V = volume
n = number of moles
R = general gas constant = 0.0821 atm.L/ mol.K
T = temperature in kelvin
Now we will convert the temperature.
25+273.15 = 298.15 K
By putting values,
32 atm × 70 L = n ×0.0821 atm.L /mol.K × 298.15 K
2240 atm.L = n ×24.48 atm.L /mol
n = 2240 atm.L / 24.48 atm.L /mol
n = 91.5 mol
18. How far does Larry move if traveling at 2m/s for 100s?
Answer:
200 m
Explanation:
Given data:
Speed of larry = 2 m/s
Time taken = 100 s
Distance travelled = ?
Solution:
Formula:
d = st
d = distance
s = speed
t = time
by putting values,
d = 2 m/s× 100 s
d = 200 m
Sarah throws a ball to Billy, but it does not go far enough for him to catch it. What must Sarah apply to her next throw in order for it to reach Billy?
Answer:
Power
Explanation:
That’s the answer
5.0g of copper is heated from 20 Celsius to 80 Celsius. How much energy it was used to heat Cu? (Specific heat capacity of Cu is 0.092 cal/g)
Answer:
the energy used to heat Cu is 27.6 Cal
Explanation:
given data
mass m = 5 g
Specific heat capacity of Cu = 0.092 cal/g
temperature T2 = 80 Celsius
temperature T1 = 20 Celsius
solution
we get here energy used to heat Cu that is express as
Q = m × c × ΔT ....................1
so here m = mass and c = specific heat capacity
and ΔT = T2 - T1
so put value in eq 1
Q = 5 × 0.092 × (80 - 20)
Q = 27.6 Cal
so that the energy used to heat Cu is 27.6 Cal
Which statement is true of a food web?
A. Producers have the greatest amount of available energy.
B. Decomposers have the greatest amount of available energy.
C. Primary consumers have the greatest amount of available energy.
D. Secondary consumers have the greatest amount of available energy.
Answer:
A= producers have the greatest amount of available energy
how would you explain that after putting in the same amount of heat, the two materials have different temperatures?
Answer:
one material is probably a conductor of heat, which means it absorbs it much better and faster while the other material isn't a conductor and it's taking time to heat up
Li²O, # of Elements and Atoms
Answer:Lithium atomic orbital and chemical bonding information. There are also tutorials on the first thirty-six elements of the periodic table includes: Li²O
Question 2 (Multiple Choice Worth 2 points)
(01.03 LC)
2
A student is trying to calculate the density of a can. He already knows the mass, but he needs to determine the volume as well. Which of the following formulas can be used to calculate
the volume of the can?
3
O V =
3
1
OVE Tran
3
OV=53
Ov=mrah
Answer:
[tex]\pi[/tex] r² x h
Explanation:
A can is cylindrical in nature. Using the formula of the volume of the can, we can find this unknown volume.
The volume of cylinder is given as:
Volume of a cylinder = Area x height
Volume of a cylinder = [tex]\pi[/tex] r² x h
Therefore density of the can;
Density = [tex]\frac{mass}{volume}[/tex]
what is the mass of of 3.20 X 10^23 particles of Co2?
Answer:
Mass = 23.36 g
Explanation:
Given data:
Number of particles of CO₂ = 3.20 ×10²³
Mass of CO₂ = ?
Solution:
1 mole contain 6.022×`10²³ particles,
3.20 ×10²³ particles × 1 mol / 6.022×`10²³ particles
0.531 mol
Mass of CO₂:
Mass = number of moles × molar mass
Molar mass = 44 g/mol
Mass = 0.531 mol× 44 g/mol
Mass = 23.36 g
16.
Magnesium reacts with hydrochloric acid according to the equation below.
Magnesium bertindak balas dengan asid hidroklorik mengikut persamaan berikut.
Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g)
What is the volume of hydrogen gas produced at room condition if 0.6 g of
magnesium is added to the excess of sulphuric acid?
[Relative atomic mass : Mg = 24 : molar volume = 24 dmº mol' at room condition]
Berapakah isipadu gas hidrogen yang dihasilkan pada keadaan bilik jika 0.6 g
magnesium ditambahkan kepada asid hidroklorik berlebihan."
[Jisim atom relative:Mg = 24 : isipadu molar = 24 dm mol! pada keadaan bilik]
A 0.6 cm
B 6.0 cm
C 60.0 cm
D 600 cm
2H2 + O2 2H2O
How many moles of water can be produced if 8 moles He are used?
a.2
b.4
c.8
d.16
Answer:
c ) 8
Explanation:
Given data:
Number of moles of water produced = ?
Moles of hydrogen react = 8 mol
Solution:
Chemical equation:
2H₂ + O₂ → 2H₂O
Now we will compare the moles of hydrogen and water.
H₂ : H₂O
2 : 2
8 : 8
Thus, 8 moles of water will produced.
Additional Practice Questions
5. If you had a pH of 4.30 in a 5.00 L sample, how many
moles of hydronium do you have?
Moles of hydronium (H₃O⁺) : 2.5 x 10⁻⁴
Further explanationGiven
pH = 4.3
V sample = 5 L
Required
moles of H₃O⁺(hydronium)
Solution
pH = - log [H₃O⁺]
4.3 = - log [H₃O⁺]
[tex]\tt [H_3O^+]=10^{-4.3}~M=10^{-4.3}mol/L[/tex]
Moles of hydronium for 5 L sample :
[tex]\tt 5~L\times 10^{-4.3}mol/L=5.10^{-4.3}moles=2.5\times 10^{-4}~moles[/tex]
What is Mg(HSO3)2????
Answer:
Mg(HSO3)2 is Magnesium bicarbonate.
Answer:
Mg(HSO3)2: Magnesium Hydrogen Sulfite
Explanation:
Which choice best describes a testable hypothesis?
A.) Carrots look better when given more water.
B.) Lilacs are better smelling than roses.
C.) Mountain lions travel over 100 km per day.
D.) The bacterium E. coli is worse than the bacterium S. aureus.
Answer:
A. carrots look better when given more water