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.
How many liters are in 3.00 moles of Ar
Distance and mass are factors that affect the force of
Answer:
Gravity is a fundamental underlying force in the universe. The amount of gravity that something possesses is proportional to its mass and the distance between it and another object.
Explanation:
Hope it helped, brainliest???
What is the percent composition of C3H8?
Answer: Hydrogen - 18.286%( mass present)
Carbon - 81.714%(mass present)
Explanation:
Mass percentage does not have any unit as numerator and denominator contains the same unit. Therefore, the percent composition of C and H in C[tex]_3[/tex]H[tex]_8[/tex] is 81.8% and 18% respectively.
What is percentage by mass?Mass percentage represents the the percentage of each element that is making a particular compound.
Mathematically,
Percentage of mass = (component’s mass ÷ total mass) x 100%
Atomic weight of different element of calcium phosphate
C= 12g/mol , H=1g/mol
Total mass of Carbon element in C[tex]_3[/tex]H[tex]_8[/tex] = 12 × 3 = 36
Total mass of hydrogen atom in C[tex]_3[/tex]H[tex]_8[/tex] = 1 × 8 = 8
Total molar mass of C[tex]_3[/tex]H[tex]_8[/tex] =36 + 8 =44 g/mole
Percentage of carbon in C[tex]_3[/tex]H[tex]_8[/tex] =36/44× 100 =81.8%
Percentage of hydrogen in C[tex]_3[/tex]H[tex]_8[/tex] =(8÷44)×=18%
Therefore, the percent composition of C and H in C[tex]_3[/tex]H[tex]_8[/tex] is 81.8% and 18% respectively.
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If the electronnegavity difference between elements A and X is 0.8, the bond in AX will most likely be what?
Answer:
Polar covalent bond
Explanation:
When the electronegativity difference between two elements A and X is 0.8, the bond AX formed will most likely be a polar covalent bond.
A polar covalent bond is one whose electronegativity difference is between 0.5 and 2.1.
In such a bond type, we have heteronuclear species with one of the species having a higher electronegativity value.
When electronegativity difference is less than 0.5, a non-polar covalent bond forms. If the value is greater than 2.1, an ionic bond will form.ALL I ask is you answer correctly I'm having a bad day ! :(
Jimmy Fallon was playing with acids and bases and was trying to determine how many grams of Copper (I) Hydroxide he would need to create 48.76 grams of Copper (I) Phosphate when reacting it with Phosphoric Acid.
Answer:
i have no clue whats going on here but imma act like i do.....
Explanation:
___ organisms only need one cycle of cell division to create offspring
Answer:
asexual organisms because they
self reproduce by fissure division instead of meiosis
calculate the mass of a sample of cobalt containing 3.31x10^22 atoms
Answer:
Mass = 3.24 g
Explanation:
Given data:
Number of atoms of cobalt = 3.31 × 10²² atoms
Mass of cobalt atoms = ?
Solution:
We will calculate the number of moles of cobalt by using Avogadro number.
1 mole contain 6.022× 10²³ atoms
3.31 × 10²² atoms × 1 mol / 6.022× 10²³ atoms
0.549 mol × 10⁻¹
0.0549 mol
Mass of cobalt:
Mass = number of moles × molar mass
Mass = 0.0549 mol × 58.93 g/mol
Mass = 3.24 g
does anyone have the 2020 paper for chemistry
Answer:
Erm.......... can you clarify what "paper", you just said "paper" there's a lot.
Explanation:
Hi does anyone have the data table answers for the Charles Law Lab Report from Edge?
Answer:
Last Column is:
Explanation:
98 , 7.8 , 371 and 0.98
Which object has the greatest inertia
Answer:
D
Explanation:
lighter objects have higher inertia
Finn is investigating how energy affects objects. He adds energy to an object as shown.
Will the energy he has added cause the object to move?
no, because the light energy from the battery will change its mass
no, because heat energy from the battery will change its temperature
yes, because the battery’s mechanical energy will make the motor run
yes, because the battery’s electrical energy will make its wheels turn
Answer:
Yes because
Explanation:
Answer:yes because the battery's electrical energy will make the wheels turn.
What causes surface water to move
Answer:
C - Wind
Explanation:
its C or wind because global wind systems control the surface water
Answer:
Wind
Explanation:
surface water from oceans move from the wind I assume it is the same for all bodies of water
What does x mean- like person x person?
Answer:
× = and
Explanation:
person and person
2.At 35°C, a small sample of methane gas (CH4) has a volume of 1.5 liters. The temperature of the methane gas is slowly cooled to 17°C. What is the new volume of the methane sample?
Answer:
V₂ = 1.41 L
Explanation:
Given data:
Initial temperature = 35°C (35 +273.15 K = 308.15 K)
Initial volume = 1.5 L
Final temperature = 17°C (17+273.15 K = 290.15 K)
Final volume = ?
Solution:
The given problem will be solve through the Charles Law.
According to this law, The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure.
Mathematical expression:
V₁/T₁ = V₂/T₂
V₁ = Initial volume
T₁ = Initial temperature
V₂ = Final volume
T₂ = Final temperature
Now we will put the values in formula.
V₁/T₁ = V₂/T₂
V₂ = V₁T₂/T₁
V₂ = 1.5 L × 290.15 K / 308.15 k
V₂ = 435.23 L.K / 308.15 k
V₂ = 1.41 L
What Elements that have an atomic number less than 37 and atomic mass greater than 78.4u?
Answer:
krypton
bromine
selenium
Which is a statement of the second law of thermodynamics?
O A. Entropy tends to increase in a system.
O B. Molecular motion stops at absolute zero.
O C. The net reaction rate is zero at equilibrium.
O D. Energy cannot be created or destroyed.
Answer:
A: Entropy tends to increase in a system
Which is a statement of the second law of thermodynamics?
O A. Entropy tends to increase in a system.
O B. Molecular motion stops at absolute zero.
O C. The net reaction rate is zero at equilibrium.
O D. Energy cannot be created or destroyed.
ITS A
How many different elements are involved in the chemical reaction shown
Ca+2H2O>ca(OH)2+H2
Explanation:
1.ca
2.H
3.O
.................
TIME REMAINING 52:03 Considering the activity series given below for metals and nonmetals, which reaction will occur?
Al > Mn > Zn > Cr > Fe > Cd > Co > Ni > Sn > Pb > H > Sb > Bi > Cu > Ag > Pd >Hg > Pt F > Cl > Br > I
2NaBr + I2 Right arrow. 2NaI + Br2
2Fe + Al2O3 Right arrow. 2Al + Fe2O3
2AgNO3 + Ni Right arrow. Ni(NO3)2 + 2Ag
Pb + Zn(C2H3O2)2 Right arrow. Zn + Pb(C2H3O2)2
Answer:
2NaBr + I2 Right arrow. 2NaI + Br2
2AgNO3 + Ni Right arrow. Ni(NO3)2 + 2Ag
Explanation:
The activity or electrochemical series is an arrangement of elements according to their order
of reactivity.
If we look at the reactions, one thing that we must note is that the reactions that can occur are those in which an element that is higher in the series displaces another element that is lower in the series.
Br is higher in the electrochemical series than I so it can displace it. Ni is higher than Ag in the electrochemical series hence it can displace it.
Answer: c
Explanation: Edge2021
what is the pOH of a solution if the concentration of hydronium ionsis 8.9x10-9
pOH of a solution = 5.95
Further explanationGiven
The concentration of hydronium ions : 8.9 x 10⁻⁹
Required
pOH
Solution
pOH = - log[OH]
[H₃O⁺]= 8.9 x 10⁻⁹
pH = - log[H₃O⁺]
pH = 9 - log 8.9
pH = 8.05
pH + pOH = 14
pOH = 14-pH
pOH= 14-8.05
pOH = 5.95
formulas for volume
Shape Formula Variables
Cube V=s3 s is the length of the side.
Right Rectangular Prism V=LWH L is the length, W is the width and H is the height.
Prism or Cylinder V=Ah A is the area of the base, h is the height.
Which statement below is not part of the cell theory? a. All living things have many cells b All living things are made of one or more cells c cells are the basic unit of structure and function in living things d All cells come from other cells
Answer:
c
Explanation:
I know it's c because I have done the test
An element whose atoms have the electron configuration 2-8-18-1 is
А
a transition element
B
a noble gas
an alkali metal
D
an alkaline earth metal
Answer:
A transition element atomic number 29 copper Cu
Explanation:
Step 2: measure the area of the top of the syringe
I am unsure if this is correct, but this might be the whole section:
The top of the syringe is a circle. You need to compute its area for use in later computations of pressure values. Start by using a ruler to measure the diameter. Estimate to the nearest 0.01 cm. Answer: 3.60 cmDivide by two to find the radius. Maintain significant figures. Answer: 1.80 cmSubstitute the radius into the formula A = πr² to find the area of the top of the syringe. Maintain significant figures. Answer: 10.2 cm²model and Schrodinger's atom model?
Explanation:
the model assumes that the electron is a wave and tries to describe the regions in space orb orbitals where most likely to be found
What is not a mass of 1 mole of a substance?
Explanation:
been defined in such a way. It is defined as the numbers of particles in 12 g of 12C. If it were 24 g instead of 12 g, then the weight of 1 mole of substance would equal 2 times the atomic/molecular mass in grams.
How many grams are equal to 413 kg in scientific notation
Answer:
[tex]4.13[/tex] x [tex]10^{2}[/tex] = 413 kg
Explanation:
4.13 x 10 = 41.3 then we multiply 41.3 by 10 agian = 41.3 x 10 = 413
so, we multiplied ten two times that = [tex]10^{2}[/tex]
= 4.13 x [tex]10^{2}[/tex]= 413 kg
Given that 1 kilogram = 1000grams, the value of 413 kilograms in grams, using scientific notation is 4.13 × 10⁵g.
How many grams are equal to 413 kg in scientific notation?Note that;
1 kilogram = 1000grams
Given that;
Mass in kilograms = 413kgMass in grams = ?Since, 1 kilogram = 1000grams
413 kilograms = ( 413 × 1000 )grams
413 kilograms = ( 413000 )grams
413 kilograms = 4.13 × 10⁵ g
Given that 1 kilogram = 1000grams, the value of 413 kilograms in grams, using scientific notation is 4.13 × 10⁵g.
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what is ionizable hydrogen and why we say it replaceable hydrogen
Answer:
only hydrogen atoms that are part of a highly polar covalent bond are ionizable. The hydrogen atom is attracted to the lone pair of electrons in a water molecule when HCl is dissolved in water. The result is that the H−Cl bond breaks, with both bonding electrons remaining with the Cl, forming a chloride ion.
Explanation:
Answer:
In an acid molecule, hydrogen atoms may be substituted by metal atoms.
Explanation:
It is ionizable only to hydrogen atoms that are part of a strongly polar covalent bond. As HCl is dissolved in water, the hydrogen atom is drawn to the lone pair of electrons in a water molecule. The effect is that the H-Cl bond splits, with the Cl remaining with both bonding electrons, forming a chloride ion.
A marble rolls off horizontally from the edge of table top 1.50 m above the floor. it strikes the floor 2.0 m from the base of the table. (a) how long does it take the marble to reach the floor? (b) What is its initial speed?
please help me masters(;´༎ຶٹ༎ຶ`)
a. t=0.553 s
b. vox(horizontal speed) = 3.62 m/s
Further explanationGiven
h = 1.5 m
x = 2 m
Required
a. time
b. vo=initial speed
Solution
Free fall motion
a. h = 1/2 gt²(vertical motion=h=voyt+1/2gt²⇒voy = 0)
[tex]\tt t=\sqrt{\dfrac{2h}{g} }[/tex]
t = √2h/g
t = √2.1.5/9.8
t=0.553 s
b. x=vox.t(horizontal motion)
[tex]\tt x=v_{ox}\times t[/tex]
vox=x/t
vox=2/0.553
vox=3.62 m/s
The molar mass of NaCl is 58.44 g/mol. What is the molarity of a solution that
contains 120 g of NaCl in 0.750 L of solution?
0.649 M
3.00 M
2.74 M
2.05 M
what physical properties can be used to separate heterogeneous mixture's?