Explanation:
A displacement reaction is the one wherein the atom or a set of atoms is displaced by another atom in a molecule. For instance, when iron is added to a copper sulphate solution, it displaces the copper metal. A + B-C → A-C + B.
The Scanning Electron Microscope, or SEM, uses beams of_______
residue from bullets or ink from a ransom note.
Electricity
Protons
Neutrons
Electrons
Answer:
Electrons.
Hope it helps.
How can the Swartz process be modified to work for bacteria?
Answer:
https://swartzbiotechnologylab.sites.stanford.edu/research
Explanation:
What is the name of this molecule?
A. Hexane
B. Hexyne
C. 2-pentane
D. Pentane
7. Which of the following is not part of the proper protocol for using acids and bases?
A. Wearing protective clothing while handling
B. Storing acids and bases below 10°C
O C. Storing acids and bases in separate areas
D. Add acid to water, not water to acid
Answer:
D. Add acid to water, not water to acid
What is sulfuric acid? Briefly
Answer:
Sulfuric acid or sulphuric acid, also known as oil of vitriol, is a mineral acid composed of the elements sulfur, oxygen and hydrogen, with the molecular formula H₂SO₄. It is a colorless, odorless and viscous liquid that is miscible with water.
Explanation:
Explanation:
Sulfuric acid is a colourless oily liquid. It is soluble in water with release of heat. It is corrosive to metals and tissue. The major use of sulfuric acid is in the production of fertilizers . Sulfuric acid, sulfuric also spelled sulfuric (H2so4) , also called oil of vitrod. Sulfuric acid is a very important commodity chemical , and a nation's sulfuric acid production is a good indicator of it's industrial strength.
A beggar wrapped himself with a few layers of newspaper on a cold winter night. This helped him to keep himself warm because:
(a) friction between the layers of newspaper produces heat.
(b) air trapped between the layers of newspaper is a bad conductor of heat.
(c) newspaper is a conductor of heat.
(d) newspaper is at a higher temperature than the temperature of the surrounding.
the one who gets its correct will be marked as the brainliest and also be followed by me!!
P.S. have a great Sunday :)
Answer:
(b)The air trapped between the layers of newspaper is a bad conductor of heat.Thus the layers of newspaper helped the beggar to keep himself warm
Hey there!
I believe your answer would be "Air trapped between the layers of newspaper is a bad conductor of heat."
Hope this helps!
Have a great day!
why does beryllium not liberate hydrogen from acid readily
Write electronic configuration of Na and Ca on the basis of subshell.
Na:-
Sodium has 11 electrons so the EC followed by
[tex]\\ \sf\Rrightarrow 1s^22s^22p^63s^1[/tex]
Ca:-
Calcium has 20electrons so the EC followed by
[tex]\\ \sf\Rrightarrow 1s^22s^22p^63s^23p^63d^2[/tex]
The lines of latitude are measured
from a line at the center of the Earth
called the
Answer:
parallels
Explanation:
hope it may help you
What is the systematic name of the following compound?
Li2S
Choose 1 answer:
А
Lithium sulfate
B В
Lithium sulfide
Dilithium sulfate
Dilithium sulfide
Explanation:
Lithium sulfide
if my answer helps you than mark me as brainliest.
What is light energy absorbed by?
Answer:
I think in the light-dependent reactions, energy absorbed by sunlight is stored by two types of energy-carrier molecules: ATP and NADPH. The energy that these molecules carry is stored in a bond that holds a single atom to the molecule. For ATP, it is a phosphate atom, and for NADPH, it is a hydrogen atom.
Hope this help you!:)
1.List three (3) importance of photosynthesis to our ecosystem. a) b) c)
Answer:
It is the number one source of oxygen in the atmosphere. It contributes to the carbon cycle between the earth, the oceans, plants and animals. It contributes to the symbiotic relationship between plants, humans and animals. It directly or indirectly affects most life on Earth
Answer:
three importance are
it helps in fixing and balancing the amount of carbon dioxide and oxygen in the atmosphere
it provides the nutrition to the plant
it helps the. plant in its growth
The density of aluminum is 2.70 g/mL. What is the mass of a 15.9 cm X 11.6 cm X 7.3 cm block of aluminum?
Hi, the answer is 3510g
Step-by-step explanation:-
We know that density of a substance tells us the mass of exactly one unit of volume of given substance. In this question,
Aluminium density = 2.70g/mL
So,
V = L x W x H = 1300 cm³ = 1300 mL
m = D x V = (2.70 / 1300) = 3510g
Technician A says it is OK to have poor safety practices because you can always clean up the mess. Technician B says keeping a high standard of personal hygiene and cleanliness is important so that you get into the habit of washing off harmful materials as soon as possible after contact. Who is correct? Select one: a. Technician A O b. Technician B O C. Both A and B O d. Neither Anor B
How did you figure out the number of neutrons in each atom?
Answer:
To get number of neutrons, you must have the mass number and atomic number of that atom.
[tex]neutrons = mass \: number - atomic \: number \\ [/tex]
atomic number is number of protons
Rain soaks into the soil or runs off into oceans, rivers, and lakes. ___________ which process is this
Answer:
The water falls to the earth as precipitation, such as rain, hail, sleet, and snow. When precipitation reaches the earth's surface, some of it will flow along the surface of the land and enter surface water like lakes, streams, and rivers, as runoff. The rest of it soaks or percolates into the soil, called
what is chemical change ?
[tex]\huge{ \color{violet}{ \boxed{ \color{hotpink}{Answer}}}}[/tex]
➣ Chemical ChangeIt occurs when new materials are formed by a change in the way the atoms are bonded together.Heat, light or electrical energy is often emmitted or absorbed.[tex] \: [/tex]
[tex]\large\tt\:⚘ \: MishiChaeYoon \: ⚘[/tex]
Explain why there was a reaction between zinc metal and a salt solution of copper sulphate please help me
Answer:
When zinc is added to copper sulphate (CUSO4) solution due to more reactivity of zinc, cooper is replaced by the zinc and forms zinc sulphate. During the process, the colour of the solution changes from blue to colourless.
You go to a convenience store to buy candy and find the owner to be rather odd. He allows you to buy pieces in multiples of four, and to buy four, you need $0.23. He only allows you to do this by using 3 pennies and 2 dimes. You have a bunch of pennies and dimes, and instead of counting them, you decide to weigh them. You have 636.3 g of pennies, and each penny weighs 3.03 g. Each dime weighs 2.29 g. Each piece of candy weighs 10.23 g.
Required:
a. How many pennies do you have?
b. How many dimes do you need to buy as much candy as possible?
c. How much should all these dimes weigh?
d. How many pieces of candy could you buy? (number of dimes from part b)
e. How much would this candy weigh?
f. How many pieces of candy could you buy with twice as many dimes?
a. We have 210 pennies
b. We need 140 dimes to buy as much candy as possible.
c. All these dimes should weigh 320.6 g.
d. We can buy 70 pieces of candy.
e. The total weight of the candies will be 2864.4 g
f. Using 3 pennies and 2 dimes as a pack to buy candies we can not buy more pieces of candy because we would need more pennies.
a. To find the number of pennies we need to divide the total mass of pennies ([tex]m_{t_{p}}[/tex]) by the mass of each one of them ([tex]m_{p}[/tex]):
[tex] N = \frac{m_{t_{p}}}{m_{p}} = \frac{636.3 g}{3.03 g} = 210 [/tex]
Hence, we have 210 pennies.
b. We can find the total number of pieces in multiples of four that we can buy with 210 pennies. To buy one piece we need to use 3 pennies and 2 dimes, so the number of total pieces is:
[tex] 3P = 210 [/tex]
Where P is for pennies
[tex] P = \frac{210}{3} = 70 [/tex]
Hence, we can buy a total of 70 pieces in multiples of four candies.
Now, from this total of 70 pieces, we can use the following number of dimes:
[tex] 2D = 70 [/tex]
Where D is for dimes
[tex] D = \frac{70}{2} = 140 [/tex]
Therefore, we need 140 dimes to buy as much candy as possible.
c. The mass of the total amount of dimes ([tex] m_{t_{d}}[/tex]) is:
[tex] m_{t_{d}} = 140*2.29 g = 320.6 g [/tex]
Hence, all these dimes should weigh 320.6 g.
d. We know that we can buy a total of 70 pieces in multiples of four candies (calculated above).
Then, we can buy 70 pieces of candy.
e. Knowing that each piece is a multiple of 4 candies, the weight of the 70 pieces of candy ([tex]m_{c}[/tex]) is:
[tex] m_{c} = 70*4*10.23 g = 2864.4 g [/tex]
f. Since we can buy pieces in multiple of four candies using 3 pennies and 2 dimes if we have now twice as many dimes, we can not buy more pieces of candy because we would need more pennies.
To see another example go here:
https://brainly.com/question/12526075https://brainly.com/question/17173050I hope it helps you!
Tell me the mass number of an atom with 4 protons, 5 neutrons, and 2 electrons.
Answer:
I'm pretty sure your answer will be 9
Answer:
9
Explanation:
Mass number = proton + neutron
= 4 + 5
= 9
The chemical reaction represented as “AB ⇒ A + B” is a ______
Answer:
Below
Explanation:
This would be a decomposition reaction. This occurs when a compound breaks down into 2 + simpler substances. We can see this from AB --> A + B, one compound (AB) breaks down into 2 simple substances ( A and B ).
Hope that helped!
Subject:.
Date:
8 a) vinyl
chloride C₂H₂ is prepared by the reaction of ethyne gas C₂H₂ with hydrochloric
acid, HCl.
Answer:
Yes it is true
Explanation:
vinyl chloride is prepared by c2h2+hcl. Since vinyl chloride is formed after ETHYNE IS MIXED WITH CHLORIDE.
Is this right:) please tell me
Answer:
I think that:
The tendency of an object to resist changes in motion: inertia
Attractive force:gravity
And everything else is right
Explanation:
I am not a physicist
But I passed physics with an A
Which of the following compounds has the lowest percent gold content by mass which one has the highest percent gold content by weight?
a. AuOH
b. Au(OH)3
c. AuCI3
d. AuI3
Answer:D. AuI3
Explanation:
An atom has 30 protons and 30 neutrons. What is its mass number?
Mass number=No of protons+No of neutrons
[tex]\\ \sf\longmapsto Mass\:No=30+30[/tex]
[tex]\\ \sf\longmapsto Mass\:No=60[/tex]
Explanation:
Here,
Protons(p+)=30
Neutrons(N⁰)=30
We know,
Atomic mass(z)=(P+)+(N⁰)
=30+30
=60
Is it me or is this year moving very fast?
Does anyone even remember Easter?
Answer:
I think you are moving fast my friend,but i don't remember Easter.
Answer:
yo fr i dont even remember last year christmas
Explanation:
Which of the following is a result of increasing the temperature of a system that includes a reaction in the forward direction that is exothermic?
a) The equilibrium constant decreases.
b) The concentrations of the products increase.
c) The equilibrium constant increases.
d) The concentrations of the reactants decrease.
Answer:
I believe the answer your looking for is out of A or B
Explanation:
Option B because if the heat increases its essentially causing the concentration to increase by replacing the weak bonds with stronger ones
In increasing the temperature of a system that includes a reaction in the forward direction that is exothermic, the concentration rises as weak bonds are replaced by stronger ones.
What is the temperature of a system?The average kinetic energy of the atoms or molecules in a system is measured by temperature. No heat is transmitted between two objects in thermal equilibrium, according to the zeroth law of thermodynamics.
In conclusion, as the temperature of the system rises, the concentration rises as weak bonds are replaced by stronger ones.
Read more about Temperature
https://brainly.com/question/13439286
will it sink or float?
giving brainlist
Answer:
Air will Float
Ice will Float.
aluminium will sink
Lead. has to sink
Gold will sink
Ethanol it will nor sink or float. it is like neutral.
methanol will Float.
Explanation:
may it helps you.
Mark me brainlist if it helps youQUESTION 8.1 POINT
Which volume is equivalent to 0.01 L?
Select the correct answer below:
O 10 dL
10 CL
10 KL
10 mL
Answer:
10 mL
Explanation:
1 L = 10^3 mL
0.01 L x 10^3 mL = 10 mL
Answer:
0.01 L=10ml
SEE the IMAGE FOR SOLUTION
6.3 gram of HNO3 as mass of nitrate
Moles of HNO 3
= 6.3/63 = 0.1 moles
HNO3 has 1 atom of H , 1 atom of N , 3 atoms of O
No of atoms = moles of molecule × atomicity of atom × avogadro number
No of atoms of H =0.1×1×6.023×10^23
= 6.023×10^22
No of atoms of N =0.1×1×6.023×10^23
= 6.023×10 ^22
No of atoms of O =0.1×3×6.023×10 ^23
= 18.069×10 ^22
