The units for the mass of aluminium sulphide is g/mol.
What is aluminium sulphide?Aluminium sulphide is a chemical compound with the formula Al2S3 and has the mass of 150.158 g/mol.
What are units?A unit is a standard that are used for making comparisons in measurements.
Unit conversions allow for measurements of a property that have been recorded using different units like centimetres to inches.
Hence, the units for the mass of aluminium sulphide is g/mol.
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how long did it take for a car to travel 20 meters with a speed of 10m/s
Answer:
2 second
Explanation:
yes
According to Newton's Second Law of Motion, if the force acting on ar
object stays the same, but the mass of an object increases, then
acceleration will...
A. increase
B. decrease
C. remain the same
D. completely stop
Answer:
B
Explanation:
Because the mass of an object increases, then the acceleration will decrease
A pH of 1 there are a lot of ______ in a solution. 2.A pH of 14 there are a lot of ______ in a solution.
Answer:
Hydrogen or hydroxonium ions in the solution
Hydroxyl ions in the solution
Explanation:
A pH of 1 shows there is a lot of hydroxonium ions in the solution and a pH of 14 shows there is a lot of hydroxyl ions in the solution.
The pH scale ranges from 1 to 14 As the values tends towards 1, the acidity increases due to concentration of hydroxonium ions in the solution. As the pH tends towards 14, the basicity increases due to the concentration of hydrogen ions in the solution.Why is the Law of Conservation of Mass a law, rather than a theory?
A. It has more scientific evidence supporting it
B. It has both independent and dependent variables
C. It has been tested with the latest laboratory balances, which are very accurate
D. It describes a repeatedly observed relationship, but it does not offer an exclamation
Answer: During a chemical reaction, matter cannot be created nor destroyed, matter can change form through physical and chemical changes, but through any of these changes, matter is conserved; even though the matter may change from one form to another, the same number of atoms exists before and after the change takes place.
Explanation: <3
What’s the difference between a learned behavior in an inherited behavior? Give one example of each
Answer:
short answers:
A learned behavior is a behavior that develops during an animal’s lifetime.
Examples of learned behaviors include tying one’s shoes or solving a math problem.
An inherited behavior is a behavior that an animal is born with.
An example of an inherited behavior is a bird building a nest.
Explanation:
Learned behaviors are those which are gradually developing in us through learning at different ages and it takes time. Inherited behaviour is innate to us which are incorporated with us by birth.
What is learned behaviour?An organism develops a learned behavior as a result of experience. In contrast to learned actions, inherent behaviors are genetically preprogrammed and can be carried out without any prior knowledge or instruction.
Certain behaviors have features that are both acquired and innate. Zebra finches, for instance, have a genetic predisposition to learn a song, but the song they sing is influenced by what they hear from their dads.
Inherited behaviors are inherited from parents to their offsprings. Such as similar nature in sound, angriness, some diseases etc. They are not gathered from any experience and are accompanied by birth.
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calculate the number of atoms in 2.5 mol manganese.
Answer:
1.5 × 10²⁴ atoms Mn
General Formulas and Concepts:
Chemistry - Atomic Structure
Reading a Periodic TableUsing Dimensional AnalysisAvogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.Explanation:
Step 1: Define
2.5 mol Mn
Step 2: Identify Conversions
Avogadro's Number
Step 3: Convert
[tex]2.5 \ mol \ Mn(\frac{6.022 \cdot 10^{23} \ atoms \ Mn}{1 \ mol \ Mn} )[/tex] = 1.5055 × 10²⁴ atoms Mn
Step 4: Check
We are given 2 sig figs. Follow sig fig rules and round.
1.5055 × 10²⁴ atoms Mn ≈ 1.5 × 10²⁴ atoms Mn
1-calculate the mass of 4 moles of Na
2-what is the mass of 0.3 moles of water H2o H:1 O:16
3-compute the number of moles found in 10g of ethanol C2H5OH C:12 O:16
please help me as fast you can
1. 92 g
2. 5.4 g
3. 0.217 moles
Further explanationThe mole is the number of particles(molecules, atoms, ions) contained in a substance
1 mol = 6.02.10²³ particles
Can be formulated
N=n x No
N = number of particles
n = mol
No = Avogadro's = 6.02.10²³
Moles can also be determined from the amount of substance mass and its molar mass
[tex]\tt n=\dfrac{m}{MW}[/tex]
1. the mass of 4 moles of Na(MW= 23 g/mol)
[tex]\tt mass=mol\times MW\\\\mass=4\times 23\\\\mass=92~g[/tex]
2. the mass of 0.3 moles of water(MW=18 g/mol)
[tex]\tt mass=mol\times MW\\\\mass=0.3\times 18\\\\mass=5.4~g[/tex]
3. the number of moles found in 10g of ethanol C2H5OH(MW=46 g/mol) :
[tex]\tt mol=\dfrac{10}{46}\\\\mol=0.217[/tex]
What is the name of CF7
Answer:
Formula mass in daltons of the chemical component.
The OH-ion concentration of a blood sample is
2.5 x 10-7M. What is the pH of the blood?
a. 6.60
b.0.99
c.740
d.1
Answer:
She okeyy
Explanation:
Example 740 are the think free ofıce pH of the blood 740 blood sample iş takipte kal ❣️
A chemist has 3.55x1022 molecules of nitrogen monoxide. How
many moles of nitrogen monoxide does the chemist have?
Answer:
0.059 molesExplanation:
To find the number of moles in a substance given it's number of entities we use the formula
[tex]n = \frac{N}{L} \\[/tex]
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
[tex]n = \frac{3.55 \times {10}^{22} }{6.02 \times {10}^{23} } \\ = 0.05897...[/tex]
We have the final answer as
0.059 molesHope this helps you
Which of the following best describes a metallic bond?
Answer:the attraction between positive metal ions and interlocking electrons
Explanation: because I got it right
Write one equation each for the decomposition reactions where energy is supplied in the form of (a) electricity and
Answer:
Electrolysis of water
Explanation:
The electrolysis of water is a decomposition reaction in which electricity is used to break down a compound into simpler molecules.
Decomposition of water is carried out in the Hofman Voltameter.
This process is achieved by passing current through an acidified water.
The expression is given as:
2H₂O → 2H₂ + O₂
· For the reaction Cl2 + 2KBr → 2KCI + Brz, how many moles of potassium chloride are produced from 119 g of potassium bromide?
Answer: l
2
+
2
K
B
r
→
2
K
C
l
+
B
r
2
Given:
300
g
of
C
l
2
300
g
of
K
B
r
(a) Mass of
C
l
2
= 300g
Molecular mass of
C
l
2
= 2(35.45) = 70.906 g
/
m
o
l
No.of moles of
C
l
2
=
m
a
s
s
/
m
o
l
a
r
m
a
s
s
=
300
/
70.906
=
4.23
moles
Mass of
K
B
r
=
300
g
Molar mass of
K
B
r
=
39
+
79.9
=
118.9
g
/
m
o
l
No.of moles of
K
B
r
=
300
/
118.9
=
2.52
moles
Now,
Consider the equation:
C
l
2
+
2
K
B
r
→
2
K
C
l
+
B
r
2
1
mole of
C
l
2
= 2 moles of
K
C
l
4.23
moles of
C
l
2
= 2x4.23=
8.46
moles
2
moles of
K
B
r
= 2 moles of
K
C
l
2.52
moles of
K
B
r
=
2.52
moles
Now convert moles to mass,
Mass of
K
C
l
produced by
C
l
2
=
8.46
×
70.906
=
599.8
g
Mass of
K
C
l
produced by potassium bromide =
2.52
×
74.5
=
187.74
g
As
K
B
r
is producing lesser moles of product so,
K
B
r
is limiting reactant and produced potassium chloride=
187
Explanation:
Taking into account the reaction stoichiometry, 1 mol of KCl is formed from 119 grams of KBr.
Reaction stoichiometryIn first place, the balanced reaction is:
Cl₂ + 2 KBr → 2 KCI + Br₂
By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:
Cl₂: 1 mole KBr: 2 molesKCI: 2 molesBr₂: 1 moleThe molar mass of the compounds is:
Cl₂: 70.9 g/moleKBr: 119 g/moleKCI: 74.55 g/moleBr₂: 159.8 g/moleThen, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:
Cl₂: 1 mole ×70.9 g/mole= 70.9 gramsKBr: 2 moles ×119 g/mole= 238 gramsKCI: 2 moles ×74.55 g/mole= 149.1 gramsBr₂: 1 mole ×159.8 g/mole= 159.8 gramsMoles of potassium chloride producedThe following rule of three can be applied: if by reaction stoichiometry 238 grams of KBr form 2 moles of KCl, 119 grams of KBr form how many moles of KCl?
[tex]moles of KCl=\frac{119 grams of KBrx2 moles of KCl}{238 grams of KBr}[/tex]
moles of KCl= 1 mole
Then, 1 mol of KCl is formed from 119 grams of KBr.
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What is the charge of phosphate in AlPO4?
The charge of phosphate : 3-
Further explanationOxidation is an increase in oxidation number, while reduction is a reduction in oxidation number.
The formula for determining Oxidation Numbers in general:
1. Single element atomic oxidation number = 0.
Group IA (Li, Na, K, Rb, Cs, and Fr): +1
Group IIA (Be, Mg, Ca, Sr and Ba): +2
Group IIIA(Al, B) : +3
H in compound = +1, except metal hydride compounds (Hydrogen which binds to groups IA or IIA) oxidation number H = -1, for example, LiH, MgH₂, etc.
2. Oxidation number O in compound = -2, except OF2 = + 2 and in peroxide (Na₂O₂, BaO₂) = -1 and superoxide, for example KO₂ = -1/2.
3 The oxidation number in an uncharged compound = 0,
Total oxidation number in ion = ion charge, Example NO₃⁻ = -1
Compound AlPO₄ :
The oxidation number in an uncharged compound = 0
Since the charge of Al as group 3A (or group 13) is +3, while the AlPO₄ compound is a polyatomic compound (consisting of polyatomic ions PO₄ and Al), the PO₄ charge:
charge Al + charge PO₄ = 0
+ 3 + charge PO₄ = 0
charge PO₄ = -3
Explain why, in a balanced chemical equation C + O2 CO2, we know that 1 gram of C will not react exactly with 1 gram of O2.
Answer:
See the answer below
Explanation:
From the equation, 1 mole of C requires 1 mole of O2 for a balanced reaction.
1 g of C will not exactly react with 1 g of O2 because the 1 g of each of the reactants contain different amounts of the substance.
The amount (in moles) of a substance is the mass of that substance divided by the molar mass.
Hence, 1 g of C will contain 1/12 moles of the substance while 1 g of O2 will contain 1/32 moles of the substance.
Solid Silicon can be reacted with Nitrogen gas at a high temperature to form silicon nitride (Si3N4).
1.20 moles of Silicon are added to 1.00 moles of Nitrogen gas.
(5 Points) Balance the equation and indicate the phases.
Si (___) + N2 (___) → Si3N4 (___)
(5 Points) What is the limiting reactant? You must show your work.
Write the names of the following covalent compounds: no2
Answer:
nitrogen dioxide
Explanation:
this was on my chemistry test
What type of chemical reaction has only one product?
Answer:
synthesis reactions
Explanation:
Just as synthesis reactions can only form one product, decomposition reactions can only start with one reactant
calculate the percentage of iron in iron (III) sulphate
Answer:
28.01 percent
Explanation:
Iron (III) sulphate, [tex]Fe_2(SO_4)_3[/tex], has 2 atoms of Fe.
One atom of Fe has a molar weight of 56. Hence, 2 atoms of Fe would have a total molar weight of 56 x 2 = 112 g/mol
Molar weight of [tex]Fe_2(SO_4)_3[/tex] = 399.88 g/mol
Percentage Fe in [tex]Fe_2(SO_4)_3[/tex] = 112/399.88 x 100%
= 28.01%
The percentage of iron is iron (III) sulphate is, therefore, 28.01 percent.
If a 200 kg person stands next to a 100 kg person. Which person would have a larger gravitational attraction?
Answer:
200 kg
Explanation:
the 200 kg person is heavier due to gravity's force the 100 kg person has less force than the other person
Answer:
massive one that is 200kg
Explanation:
Since the gravitational force is directly proportional to the mass of both interacting objects, more massive objects will attract each other with a greater gravitational force. So as the mass of either object increases, the force of gravitational attraction between them also increases.
two students noted that the acceleration of a car was =40 k/m squared . the fiesta student , "that can't be right . you can't have a negativo acceleration ."second student said , "that can't be right , you can't have seconds squared .
what would you say to each student to help them More better understand how acceleration Is described
PLEASE ANSWER ASAP,FOR MY SCIENCE TEST
Answer:
First one: Yes, It can be negative.
Explanation:
First one: The reason you can have negative acceleration is that acceleration can slow down, or decelerate, causing the negative acceleration.
The name for the ionic compound CoHPO4
Answer:
Dicalcium phosphate. (I'm sure meant for the "o" to be an "a" for Calcium).
Explanation:
I hope this helps! :D Have a nice night!
mass in grams of 3.32 mol k
Answer:
129.8 grams
Explanation:
Im a bit confused of what your are asking but if your are asking the mass in grams of K (Potassium) it is very easy dont worry
You multiply mols x Molecular weight.
So
3.32x 39.1= 129.8 grams
CHOOSE ONE AND I WILK GIEV YOU BRAINLIEST AND DONT GUESS PLEASE!!!..
Answer:
c
Explanation:
the first plants to grow after a fire are called?
Answer:
Ephemerals
Explanation:
The first plants to move into the new bare ground after a wildfire are wildflowers or “weeds.” These fast-germinating, leafy herbaceous plants are also known as “forbs” or “ephemerals.” They quickly germinate, grow and produce a new crop of seeds.
Answer:
ephemeral
Explanation:
What is the name of cells that have the ability to develop into different
kinds of cells?
Answer:
stem cells
Explanation:
hope it helps
What happens when a wave hits an object?
the wave is reflected
the wave continues on
the wave is interfered with
the wave stops
Answer:
the wave is reflected. it starts heading towards the other direction
Explanation:
Balance all the equations
1)Ferric chloride + Ammonium hydroxide Ferric hydroxide + Ammonium chloride
2) Aluminum + Hydrochloric acid Aluminium chloride + Hydrogen gas
Answer:
Balancing Chemical Equations
Balance the equations below:
1) __1__ N2 + __3__ H2 > _2__ NH3
2) __2__ KClO3 >⮴ __2__ KCl + __3__ O2
3) __2__ NaCl + __1__ F2 ⮴ __2__ NaF + __1__ Cl2
4) __2__ H2 + __1__ O2 ⮴ __2__ H2O
5) __1__ Pb(OH)2 + __2__ HCl ⮴ __2__ H2O + __1__ PbCl2
6)__2__ AlBr3 + __3__ K2SO4 ⮴ __6__ KBr + __1__ Al2(SO4)3
7) __1__ CH4 + __2__ O2 ⮴ __1__ CO2 + __2__ H2O
8) _1___ C3H8 + _5___ O2 ⮴ __3__ CO2 + __4__ H2O
9) __2__ C8H18 + __25__ O2 ⮴ __16__ CO2 + __18__ H2O
10) __1__ FeCl3 + __3__ NaOH ⮴ __1__ Fe(OH)3 + __3__NaCl
11) __4__ P + __5__O2 ⮴ __2__P2O5
12) __2__ Na + __2__ H2O ⮴ __2__ NaOH + __1__H2
13) __2__ Ag2O ⮴ __4__ Ag + __1__O2
14) __1__ S8 + __12__O2 ⮴ __8__ SO3
15) _6___ CO2 + _6___ H2O ⮴ __1__ C6H12O6 + __6__O2
16) ___1_ K + __1__ MgBr ⮴ __1__ KBr + __1__ Mg
17) __2__ HCl + __1__ CaCO3 ⮴ __1__ CaCl2 + __1__H2O + __1__ CO2
18) __1__ HNO3 + __1__ NaHCO3 ⮴ __1__ NaNO3 + __1__ H2O + _1___ CO2
19) _2___ H2O + __1__ O2 ⮴ __2__ H2O2
20) __2__ NaBr + __1__ CaF2 ⮴ __2__ NaF + __1__ CaBr2
Explanation:
(20 POINTS) I NEED IT TODAY!
Base your answer on the information below and on your knowledge of chemistry.
Two very stable compounds, Freon-12 and Freon-14, are used as liquid refrigerants. A Freon-12 molecule consists of one carbon atom, two chlorine atoms, and two fluorine atoms. A Freon-14 molecule consists of one carbon atom and four fluorine atoms.
To which class of organic compounds do Freon-12 and Freon-14 belong?