Answer: Non-polar covalent bond
Explanation: If two atoms have no difference between their electronegativity charges, they will form nonpolar covalent bonds. This means that the electrons will be shared with the same intensity.
7: Structures in an organism's cell that carry its hereditary information are called .
Answer:
genes
Explanation:
If a piece of matter changes shape, how does its mass change?
A.It increases.
B.It decreases.
C.It changes randomly.
D.It remains the same.
PLEASE HELP!!
How many liters would 4.56 mol sulfur dioxide occupy at STP?
The volume of Sulfur dioxide-SO₂ at STP : = 102.144 L
Further explanationGiven
4.56 mol Sulfur dioxide-SO₂
Required
The volume
Solution
Conditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure). At STP, Vm is 22.4 liters/mol.
so for 4.56 mol :
= 4.56 x 22.4 L
= 102.144 L
An atom has 25 protons, 30 neutrons, and 25 electrons. What is the charge of the
atom's nucleus?
F +25
G +30
H -25
J -30
What percent of AgNO3 is silver?
Answer:
63.499%
Explanation:
A student wrote a chemical equation as shown.
Fe2O3 + 3H2 → Fe + H2O
What should the student do to balance the equation?
A. Add a coefficient 2 before Fe and a 3 before H2O
B. Add a coefficient 3 before Fe and a 2 before H2O
C. Add a coefficient 4 before Fe and a 5 before H2O
D. Add a coefficient 5 before Fe and a 4 before H2O
Answer:
A
add a coefficient 2 before Fe and a 3 before H2O
Answer:
Option A. Add a coefficient 2 before Fe and a 3 before H2O
Explanation:
Fe₂O₃ + 3H₂ —> Fe + H₂O
The above equation can be balance by as follow:
Fe₂O₃ + 3H₂ —> Fe + H₂O
There are 2 atoms of Fe on the left side and 1 atom on the right side. It can be balance by putting 2 before Fe as shown below:
Fe₂O₃ + 3H₂ —> 2Fe + H₂O
There are 3 atoms of O on the left side and 1 atom on the right side. It can be balance by putting 3 before H₂O as shown below:
Fe₂O₃ + 3H₂ —> 2Fe + 3H₂O
Now the equation is balanced.
Thus, the student should add a coefficient 2 before Fe and a 3 before H2O
Calculate the mass of 140g of Cl2
Answer:
6amu
Explanation:
mass=proton+neutron
mass of cl2=2(16+16)=64amu
what are intermolecular forces
Question 2/5
The definite chemical composition of a mineral refers to
A. the mineral being created in a chemical laboratory
B. the number of elements from the periodic table that make up the mineral
C. the crystalline structure
D. the solid state of the mineral
How many molecules of Mg3N2 (magnesium nitride) are formed when excess Mg (magnesium)
reacts with 24.3 moles of N2 (nitrogen gas)?
3Mg(s) + N2(g) → Mg3N2(s)
Please explain or show how to work it as well!
Explanation:
3Mg(s) + N2(g) = Mg3N2(s)
First check that the equation is balanced. In this case, it is.
Assuming that magnesium is the limiting reactant:
First find the molecular weight using the Periodic Table.We find that the atomic mass of magnesium is approximately
24.3g, so the molecular weight is just 24.3g\mol
2. Next we need the mole to mole ratio. As there are 3
magnesiums for 1 magnesium nitride (shown by the coefficients), the
mole to mole ratio is 1 mol Mg3N2\3 mol Mg.
3. We need the amount of the substance, in grams. Since you have not
stated it in the question, I'll just do 10g AS AN EXAMPLE. Note that
depending on the amount, the LIMITING REAGENT MAY DIFFER.
4. Finally, we need the molecular weight of Mg3N2, which we can easily
calculate to be around 100.9\mol.
5. Putting this all together, we have 10gMg⋅ (mol Mg\24.3gMg)
(1mol Mg3N2\ 3mol Mg) (100.9g Mg3N2\mol Mg3N2)
the units will cancel to leave gMg3N2 (grams of magnesium nitride):
10gMg ⋅ (mol Mg\24.3gMg) (1mol Mg3N2\3mol Mg)
(100.9g Mg3N2\mol Mg3N2)
Doing the calculation yields approximately 13.84g.
Assuming that nitrogen is the limiting reactant:
Similarly, following the above steps but with 10g of nitrogen yields 36.04g
In conclusion, as we produce less amount of Mg3N2 when we assumed that Mg was the limiting reagent, magnesium is the limiting reagent and nitrogen is the excess.
Note: This is in THIS CASE, where we have 10g of both. The answer may vary depending on the amount of each substance.
Answer:
1.46×10^25 molecules
Explanation:
Each mole of N₂ reacts with 3 moles of Mg to form 1 mole of Mg₃N₂. That is, the number of moles of product is equal to the number of moles of nitrogen gas when excess magnesium is present.
There are 6.022×10²³ molecules in each mole of a substance, so the number of molecules of Mg₃N₂ is
(24.3 mol)(6.022×10²³ molecules/mol) = 1.46×10²⁵ molecules
Write 8.76 x 103 in standard
notation
Plzzz hurry!!!
Answer:5.02228
Explanation: My bad I put it in scientific notation not standard. Sorry. Heres the right answer
How many moles are in 845 grams of Zn?
Answer:
12.92
Explanation:
Is acne a physical or chemical change?
Answer:
A... Chemical change?
Explanation:
Im really sorry if this is wrong. Im d u m b
me need answer to da question
Answer:
cells?
Explanation:
How many molecules are in 0.45 moles of aluminum metal ?
Answer:
There are 2.7× 1023atoms in 0.45 mol of Al.
Explanation:
Answer:
do not care
Explanation:
can someone answer this question?
Answer:
what is the question i could help if u gave me the question but i don't see it
Explanation:
Hi could you please help, i have a test today which will determine my grade
Acid solutions contain hydrogen ions.
Aluminium reacts with dilute hydrochloric acid to form a solution containing aluminium ions Complete the balanced ionic equation for this reaction
Explanation:
the answer is in the attachment
PLEASE HELP, THIS IS TIMED!!!!!!!!!!!!!!!!!!!!!!!!!!Convert 22.6g AgNO3 to moles.
a. 0.133 mol
b. 1 mol
C.
0.15 mol
d. 2 mol
Answer:
the answer b because
The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles AgNO3, or 169.8731 grams.
Explanation:
6. It took me 3 hrs to drive to the next city at the speed of 48km/h. How far a way are the cities?s
Answer:
speed = 16 kilometers per hour
= 16 km/h
Explanation:
Mark brainliest plssssss
HELP PLZ!CHEMISTRY.WILL GIVE BRAINLIEST!!!!
may/june 2018 paper 22.
i need explanations and steps for these.
thank you so much!!
1. 12 L = 12 dm³
2. 3.18 g
Further explanationGiven
1. Reaction
K₂CO₃+2HNO₃⇒ 2KNO₃+H₂O+CO₂
69 g K₂CO₃
2. 0.03 mol/L Na₂CO₃
Required
1. volume of CO₂
2. mass Na₂CO₃
Solution
1. mol K₂CO₃(MW=138 g/mol) :
= 69 : 138
= 0.5
mol ratio of K₂CO₃ : CO₂ = 1 : 1, so mol CO₂ = 0.5
Assume at RTP(25 C, 1 atm) 1 mol gas = 24 L, so volume CO₂ :
= 0.5 x 24 L
= 12 L
2. M Na₂CO₃ = 0.03 M
Volume = 1 L
mol Na₂CO₃ :
= M x V
= 0.03 x 1
= 0.03 moles
Mass Na₂CO₃(MW=106 g/mol) :
= mol x MW
= 0.03 x 106
= 3.18 g
Answer:
welcome to 2021 dude
its been a long time since i answered this but here is my new account
Explanation:
Which part of the mantle is still a solid but flows like a thick, heavy liquid?
-lithosphere
-asthenosphere
-core
-crust
i will give brainest
Answer:
Asthenosphere
Explanation:
The asthenosphere is the hot, weak, inner part of the upper mantle. Although it is solid, it can flow like a thick, heavy liquid.
Explain why beryllium is produced when potassium is heated with beryllium
chloride.
You should refer to reactivity in your answer.
Explanation:
The more reactive element replaces less reactive element during chemical reaction.
Since, potassium is more reactive than beryllium. When potassium reacts with beryllium choride, it replaces beryllium and forms potassium chloride and produces beryllium.
Beryllium is produced due to the fact that the more reactive element in the reaction would have to take over the element that is less reactive.
The chemical reaction of Potassium and Beryllium chloride
In this reaction the element that is more reactive is potassium. When the reaction takes place it would take over and replace beryllium due to this quality.
Hence beryllium chloride would become potassium chloride from the resulting reaction.
Read more on chemical reactions here:
https://brainly.com/question/11231920?source=archive
There is some gas in a container at pressure 136 atm. When 142 dm3 gas is released at pressure of 1 atm,then the pressure of the vessel is 131.6 atm. What is the volume of the Tank?
Answer:
228.7[tex]dm^{3}[/tex]
Explanation:
According to Boyle's law
P1V1 = P2V2
where P1& P2 are initial and final pressure
and V1& V2 and initial and final volumes respectively.
Given:
P1 = 136atm, P2 = 131.6atm
V1 = 142[tex]dm^{3}[/tex]; V2 = ?
V2 = [tex]\frac{P1V1}{P2}[/tex] = [tex]\frac{136*142}{131.6}[/tex]
= 146.7[tex]dm^{3}[/tex]
Total volume, V = V1 + V2
=146.7 + 142
= 228.7[tex]dm^{3}[/tex]
Which of the following is NOT a property of metals associated with metallic bonds?
what are the following things
Metals are good conductors and shows some peculiarities such as luster, ductility, malleability,etc. Brittleness is not associated with metals since they are hard. Hence option A is correct.
What is metal?Metals are electropositive elements with good conductivity. Metals are classified into the s block and d block of periodic table. Thus alkali metals, alkaline earth metals and transition metals are the classes of metals.
Metals are rich in free electrons thereby, they capable of conducting electrically and thermally. Other features that metals have , they are hard and not brittle. Metals are malleable and ductile.
Malleability is the property by which it can be pressed into different shapes easily without cracking. Ductility means they can be plastically deformed into thin wires without fracture.
Metals are shining and this property is called lustrous. Hence all the properties such malleability, ductility and luster are features of metals but they are not brittle. Hence option A is correct.
To find more about metals, refer the link below;
https://brainly.com/question/18153051
#SPJ6
Your question is incomplete. But your complete question probably was:
Which of the following is NOT a property of metals associated with metallic bonds?
A Brittleness
B Malleability
C Ductility
D Luster
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
The attractive forces between sodium and chloride ions are called:
a)Bonding Forces
b)Gravity Forces
c)Pulse Forces
d)Interparticle Forces
Probability can be used
Answer:
How likely something is to happen.
What do oxygen and iron make?
Answer:Iron combines with oxygen to produce rust, which is the compound named iron oxide
Explanation:
Describe two examples of something that has potential energy to do something
Answer: the heavy ball of a demolition machine is storing energy when it is held at an elevated position.
Which has potential energy
Explanation:
Answer: hope u dont mind i think ash answer ur question just imagine i had the correct answer woah UwU
Explanation:
explain why fossil fuels are exhaustible natural resources
Answer:
Fossil Fuels are exhaustible natural resources, because they can't be renewed. Once these fuels are used up, there are NONE left! We can change that by reducing the amount we use. It takes millions of years for it to be remade, and we will soon die out before that happens. Thats why fossil fuels are exhaustible. :)
Explanation:
Hope this helps! :)
