Answer:
stiring
Explanation:
Because in the process of stiring components mix together not separate.
hope u got it
What is the nuclear charge of an atom of Silver?
A) +79
B) +47
C) +108
D) +61
Answer:
47 is your correct ans, which is b
Convert the following into correct scientific notation:
(a) 496.3 x 10^2
(b) 7876.1 x 10^-7
(c) 0.089 x 10^-9
Answer:
4.963x 10²
7.8761x 10³
8.9 x 10⁻²
Explanation:
Scientific notation is the way to express the large value in short form.
The number in scientific notation have two parts.
. The digits (decimal point will place after first digit)
× 10 ( the power which put the decimal point where it should be)
for example the number 6324.4 in scientific notation will be written as = 6.3244 × 10³
a) 496.3 x 10²
4.963x 10²
b) 7876.1 x 10⁻⁷
7.8761x 10³
c) 0.089 x 10⁻⁹
8.9 x 10⁻²
1.Which is the largest atom in Group 1?
2.Which is the smallest atom in Group 15
3.Which is the smallest atom in period 5?
4.Which is the largest atom in Period 4?
____ describes the quantity of solute that
can dissolve in a given amount of solvent at a
given temperature.
A. Viscosity
B. Solubility
C. Fluidity
D. Permeability
Answer:
B
Explanation:
a sample contains 4.0x10^25 molecules of hydrogen peroxide (H2O2) how many hydrogen atoms would be in the sample?
nitrogen and phosphorus would form what kind of bond
Answer:
The size of a phosphorus atom also interferes with its ability to form double bonds to other elements, such as oxygen, nitrogen, and sulfur. As a result, phosphorus tends to form compounds that contain two P-O single bonds where nitrogen would form an N=O. double bond.
Explanation:
Which properties of plastics are useful in transporting food and drink?
Answer:
mark me brainlist plzzzzzzzzzzzzzz
Explanation:
Answer: In plastic, particles are very much tightly packed ,so food and drink kept in it do not get spoiled easily and its contact with environment gets cut off. So it is useful in transporting food and drink.
China's net exports are represented by a positive integer. Explain what this tells you about imports and exports of China.
A.China's exports exceed imports by 120 billion c.
B.China's total exports are 120 billion dollars.
C. China's total imports are 120 billion dollars.
D. China's imports exceed exports by 120 billion dollars.
Please select the best answer from the choices provided.
A. A
B. B
C. C
D. D
Answer: the answer would be A
Explanation:
Answer:
A
Explanation:
A 3.74-L cylinder contains 4.17 g of methane, CH4, at a pressure of 3020 mmHg. What is the temperature of the gas
Answer:
T = 694 K
Explanation:
Given the following data:
V= 3.74 L
mass = m = 4.17 g
P = 3020 mmHg x 1 atm/760 mmHg= 3.97 atm
We use the ideal gases equation to calculate the temperature (T):
PV= nRT ⇒ T= PV/nR
We calculate n (number of moles of methane gas) by dividing the mass into the molar mass of methane (CH₄):
molar mass(CH₄) = MM = (1 x 12 g/mol)+ (4 x 1 g/mol) = 16 g/mol
n = m/MM= 4.17 g/(16 g/mol)= 0.261 mol
Finally, we calculate T:
T= PV/nR = (3.97 atm x 3.74 L)/(0.261 mol x 0.082 L.atm/K.mol) = 694 K
please answer it I really need this answer to pass thank you
Answer:B
Explanation:
The picture shows to containers filled with a gas, both initially at room temperature
AAA
Ice
Heat
Which statement is correct? (5 points)
The gas particles in both containers have the same average kinetic energy because they have equal number of particles
The gas particles in both containers have the same average kinetic energy because they have the same volume
The average kinetic energy of the gas particles is greater in container A because it has a lower temperature
The average kinetic energy of the gas particles is greater in container 8 because its particles move faster
Od
Answer:
D. The average kinetic energy of the gas particles is greater in container B because its particles move faster.
Explanation:
Option D is the correct statement. From the excerpt, it can be seen that container B is being heated. The heat that is applied to container B will make the temperature of the gas to increase, thereby increasing the average kinetic energy. This will cause the gas molecules to mover faster and with force hitting the walls of the gas container. At this time, pressure should increase. Also, the volume of the gas increases just as the temperature of the gas also increases.
Answer:
D. The average kinetic energy of the gas particles is greater in container B because its particles move faster.
Explanation:
Which of the following situations would cause light to refract?
When light passes from one medium to the other of different density, the light ray will bend. This is called refraction. Light moving from air to water cause refraction. Hence, option d is correct.
What is refraction ?Refraction is a phenomenon in which a light ray bent in its direction when passing from one medium to the other where the mediums have different densities.
The measure of bending of light in a medium is called refractive index of that medium. It depends on the density as well as velocity of light through the medium.
For example, when light passes from air to water or air to glass it bends. We can clearly observe the bending in the light ray at the boundary of the two mediums. Hence, option D is correct.
Find more on refraction:
https://brainly.com/question/29692290
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The options of your question were as follows:
A. traveling through a vacuum B. passing from one glass block to another C. moving through the air D. moving from air to water.
Help please!
Describe Bohr’s model of the hydrogen atom
Explanation:
Bohr's model of the hydrogen atom is based on three postulates: (1) an electron moves around the nucleus in a circular orbit, (2) an electron's angular momentum in the orbit is quantized, and (3) the change in an electron's energy
An open pot of water is heated on the stove. As the water boils, the molecules____________?
Answer:
the molecules . . . separate and eventually evaporate into gas.
Explanation:
The ____ are new substances that are created following a chemical reaction. *
A:chemical reactions
B:products
C:reactants
D:coefficients
Answer:
b
Explanation:
When the pressure of a gas doubles, the new volume
Answer:
yes it does
Explanation:
Mercury completes one orbit around the Sun in 68 days.
a. True
b. False
Answer:
true :PP
Explanation:
GIVING BRAILIEST FOR ANSWER
Answer:
B
Explanation:
Answer:
c is the answer
Explanation:
One of the most common iron oxides is iron (III) oxide, known as rust. The chemical formula for rust is Fe2O3. Rust is formed when iron reacts with oxygen in moist air. The following chemical equation represents the reaction: 4Fe + 3O2 → 2Fe2O3.
How can you change a objects state of matter
Answer:
Changing states of matter occur when matter loses or absorbs energy. When a substance absorbs energy the atoms and molecules move more rapidly and this increased kinetic energy pushes particles far enough, that they change form. This energy is usually heat or thermal energy.
Explanation:
A mixture of helium, nitrogen, and oxygen has a total pressure of 756 mmHg. The partial pressures of helium and nitrogen are 229 mmHg and 205 mmHg, respectively. What is the partial pressure of oxygen in the mixture?
Answer:
322 mmHg
Explanation:
Step 1: Given data
Total pressure of the gaseous mixture (P): 756 mmHgPartial pressure of helium (pHe): 229 mmHgPartial pressure of nitrogen (pN₂): 205 mmHgStep 2: Calculate the partial pressure of oxygen (pO₂)
The total pressure of the gaseous mixture is equal to the sum of the partial pressures of the individual gases.
P = pHe + pN₂ + pO₂
pO₂ = P - pHe - pN₂
pO₂ = 756 mmHg - 229 mmHg - 205 mmHg
pO₂ = 322 mmHg
The compound with the molecular formula C4H10 is called
Answer:
butane
Explanation:
I hope this helps!
Answer:
Butane
...............
g (True/false)Sodium borohydride, NaBH4, is a reducing reagent which converts carbonyl to carboxylic acids
Answer:
False
Explanation:
Sodium borohydride, NaBH4 is a reducing agent. The conversion of a carbonyl to carboxylic acids is an oxidation reaction.
Sodium borohydride, NaBH4 does not perform an oxidation reaction, it is only used for reduction reactions. Hence the statement in the question is false.
Zinc and hydrochloric acid react to form zinc chloride and hydrogen gas according to
the equation shown
Zn + 2HCI – ZnCI, + H
If 2.0 mol of Zn is mixed with 3.0 mol
of HCl, which reactant will be limiting?
neither Zn nor HCI
both Zn and HCI
Zn
HCI
Explanation:
Mole ratio of Zn to HCl = 1 : 2.
If we use all 2.0mol of Zn, we would need 2.0 * 2 = 4.0mol of HCl. However we only have 3.0mol of HCl.
Therefore HCl is limiting.
4.A 100 L sample of gas is at a pressure of 80 kPa and a temperature of 200 K. What volume does the same
sample of gas occupy at STP?
Answer:
V₂ = 107.84 L
Explanation:
Given data:
Initial volume = 100 L
Initial pressure = 80 KPa (80/101 =0.79 atm)
Initial temperature = 200 K
Final temperature =273 K
Final volume = ?
Final pressure = 1 atm
Formula:
P₁V₁/T₁ = P₂V₂/T₂
P₁ = Initial pressure
V₁ = Initial volume
T₁ = Initial temperature
P₂ = Final pressure
V₂ = Final volume
T₂ = Final temperature
Solution:
V₂ = P₁V₁T₂ /T₁P₂
V₂ = 0.79 atm × 100 L × 273 K / 200 K × 1 atm
V₂ =21567 atm.L.K /200 K.atm
V₂ = 107.84 L
Please match word and definition < electrons and electric current move easily 1. electric current < Prevents electrons from moving 2. insulator flow of an electrical charge in a circuit 3. electric circuit 4. conductor provides a path for electrons to flow
Answer:
1st box:4
2nd box:2
3rd box:3
4th box:1
Explanation:
I am not 100% sure on this, but i am pretty confident that this is the answer! BUT If this is somehow wrong, please tell me so i can comment a better answer! :)
Due to property of conduction, conductor allows electrons and electric current to move easily,insulators prevent electric current from moving, electric current is the flow of an electrical charge in a circuit and electric circuit provides a path for electrons to flow.
What is conduction?Conduction is defined as a process as a means of which heat is transferred from the hotter end of the body to it's cooler end.Heat flows spontaneously from a body which is hot to a body which is cold.
In the process of conduction,heat flow is within the body and through itself.In solids the conduction of heat is due to the vibrations and collisions of molecules while in liquids and gases it is due to the random motion of the molecules .
When conduction takes place, heat is usually transferred from one molecule to another as they are in direct contact with each other.There are 2 types of conduction:1) steady state conduction 2) transient conduction.According to the type of energy conduction is of three types:
1) heat conduction
2) electrical conduction
3)sound conduction
Learn more about conduction,here:
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what is the smallest division on 4 balance
Answer:0.1g
Explanation:
Answer: The smallest scale division is a tenth of a centimeter or 1 mm.
Explanation: I got this from a website but I hope it helps!
What is bonding all about in chemistry?
Answer:
It is like about a attraction between atoms, molecules, and more.
During a chemical reaction, heat is absorbed. What kind of reaction occurred?
A) An endothermic reaction
B) An exothermic reaction
Answer:
Endothermic and exothermic reactions are chemical reactions that absorb and release heat, respectively. A good example of an endothermic reaction is photosynthesis. Combustion is an example of an exothermic reaction. The categorization of a reaction as endo- or exothermic depends on the net heat transfer.
Explanation:
Answer:
An endothermic reaction
Explanation:
The heat is being absorbed so it's and endothermic reaction
which of the following shows correctly an ion pair and ionic compound the two ions from
Answer:
what are the choices?
Explanation:
What is Scientific definition of a compound?