Answer:
luster
Explanation:
Answer:
malleability
ductility
heat conduction
current conduction
luster
Explanation:
got it right on edg 2022
1
The process of a solid turning into a liquid is called
Answer:
Melting
Explanation:
Once heat is added it will turn to a liquid
Melting is the process of turning solid to liquid.
A 328-g sample of water absorbs 5.78 × 103 J of heat. Calculate the change in temperature for the water. If the water is initially at 25.0 °C, what is its final temperature?
Answer:
The change in temperature for the water is 4.21 C and its final temperature is 29.21 C
Explanation:
Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.
There is a direct proportional relationship between heat and temperature. The constant of proportionality depends on the substance that constitutes the body as on its mass, and is the product of the specific heat by the mass of the body. So, the equation that allows calculating heat exchanges is:
Q = c * m * ΔT
where Q is the heat exchanged by a body of mass m, made up of a specific heat substance c and where ΔT is the temperature variation.
In this case, you know:
Q= 5.78*10³ J c= 4.186 [tex]\frac{J}{g*C}[/tex] m= 328 g ΔT= Tfinal-TinitialReplacing:
5.78*10³ J= 4.186 [tex]\frac{J}{g*C}[/tex] *328 g* ΔT
Solving:
ΔT= [tex]\frac{5.78*10^{3} J }{4.186\frac{J}{g*C}*328 g}[/tex]
ΔT= 4.21 C
Being ΔT= Tfinal - Tinitial and Tinitial=25 C, then:
4.21 C= Tfinal - 25 C
4.21 C + 25 C= Tfinal
29.21 C= Tfinal
The change in temperature for the water is 4.21 C and its final temperature is 29.21 C
True or False gases have indefinite shapes because gas molecules are constantly
changing their positions.
Answer:
True
Explanation:
Gases don't have any shape or form, so they could not be definite.
What is an ion atom?
aside from silica gel and alumina what other stationary phase can you use in chromatography
Answer:
Paper
Explanation:
In chromatographic separation, two different phases are important; a stationary phase and a mobile phase.
The stationary phase is the phase that does not move. Substances are separated based on how fast or slowly they move in the stationary phase.
The mobile phase is usually the solvent(or mixture of solvents) that carries the solutes through the stationary phase.
The stationary phase is usually composed of a porous material. Paper is a porous material. The mobile phase is trapped between the cellulose fibers of the paper and separation is achieved.
Brainliest and more points if you do all 3
H3COH3 lewis dot structure
Answer:
The Lewis structure of CH3OCH3 is dimethyl ether, the simplest ether in existence
Explanation:
i need help with this asap pls help if you can. pls, don't take the points if you don't know.
hope this is correct / it helps
According to the rate law, how do concentrations affect rate?
O A. The rate increases as concentrations decrease.
OB. The rate is independent of concentrations.
O C. It is impossible to tell how the rate is affected.
O D. The rate increases as concentrations increase.
Answer:
Explanation:
d
I need help with this question ASAP this should have 2 answers
Answer:
The correct answer is B. and C. according to me!
Answer:
A. and C.
no explanation...
what information is needed to determine the amount of moles in 1.6g of HCL?
Answer:
Molar mass and Mass
Explanation:
The relationship between mass and number of moles is given as;
Number of moles = Mass / Molar mass
Mass = 1.6 g
Molar mass of HCl = ( 1 + 35.5 ) = 36.5 g/mol
Number of moles = 1.6 g / 36.5 g/mol
Number of moles = 0.0438 mol
Is this a balanced equation? 4NH3+ 5O2 – 4NO + 5H20
Answer:
The reaction is not balanced.
Explanation:
The reaction expression is given as:
4NH₃ + 5O₂ → 4NO + 5H₂O
In a balanced reaction equation, the number of atoms on both sides of the expression is the same.
Now let us investigate;
Elements N H O
Reactants 4 12 10
Products 4 10 9
We see that the number of H and O on both sides of the expression is not the same. The reaction is not balanced.
What happens when Na forms an ionic bond?
O it gains one electron and becomes a -1 anion
it loses one electron and becomes a +1 cation
It loses 2 electrons and becomes a + 2 cation
It shares electrons with the other atom in the bond
Look at picture
ASAP please will mark as brainlist don’t got much time
Answer:
in this also 1st option is correct because na is also a metal and metal gains electron...
Which is one factor that describes a Mediterranean climate?
has many trees
is found in inland areas
has cool and rainy winters
has little to no precipitation
PLEASE I WILL MARK BRAILIEST AND GIVE 30 PTS
Answer:
dry
polar
highlands
temperate marine
temperate continental
Explanation:
i need help please asap
Answer:
Bonding in chemistry is known as chemical bonding which means the interaction or attraction between molecules.
Chemical bonds are of different type such as ionic, covalent, hydrogen, and metallic. Ionic bonds are formed by the transfer of valence electron from one atom to other and there is unequal distribution of electrons between two or more atoms. Ionic bonds forms two oppositely charges ions positively charged (loses electron) or negatively charged (gains electron).
Covalent bond are the strong chemical bonds that form due to equal sharing of electron pairs between atoms. They form a stable element and have stable attraction or repulsive forces.
СН2OH - CHOH - СН2ОН
what is the reactant of 2Fe2O3 = 4Fe + 3O2
It depends on the direction of the arrow.
If the arrow goes like this ---> the reactant would be 2Fe2O3
If the arrow goes like this <--- the reactants would be 4Fe + 3O2
aluminum reacts with 42g of iron(ii) sulfate. How many grams of iron are formed?
Answer:
15.44 gm
Explanation:
Hope it is helpful....
- a) write the formula unit of calcium fluoride.
b) A certain mass m of calcium fluoride contains 1.2*1023 anions. Deduce the mass (m). NA= 6.02*1023
Answer:
hope this image is helpful for you
which two types of rock could form after other rock melts into liquid magma
a. sedimentary
b. metamorphic
c. extrusive igneous
d. intrusive igneous
Answer:
a, b
Explanation:
look at rock cycle charts, I knew this since 2nd grade
Answer:
its c and d
Explanation:
I took the test got 100%
Write the word and balanced chemical equations for the reaction between:
Potassium hydroxide + hydrochloric acid
Answer:
Potassium hydroxide + Hydrochloric acid → Potassium chloride + Water.
potassium hydroxide + hydrochloric acid = neutralisation
WHOEVER ANSWERS A GOOD ANSWER I WILL GIVE BRAINLIEST!
What would happen to the rate of evaporation if you moved all the containers outdoors into direct sunlight?
Answer:
Molecules contained in a liquid evaporate from the surface area. This means that the larger the surface area, the faster the rate of evaporation. ... This means all the other factors that affect the rate of evaporation are identical. Leave the containers for one hour.
Explanation:
Answer:
Evaporation would accelerate.
Explanation:
Direct sunlight increases the thermal energy on the containers, increasing evaporation.
Which statement is completely accurate?
Atoms of the same element can have different numbers of neutrons.
Atoms of the same element can have neutrons but exist without protons.
Atoms of the same element always have different numbers of neutrons.
Atoms of the same element always have different atomic weights.
Answer:The same chemical element can have a different number of neutrons and still be the same element. We refer to the atoms of the same element with different numbers of neutrons as "isotopes"
Explanation:
If 220 grams of C3H8 react with 20 grams of O2, how much CO2 can be formed?
Answer:
Explanation:
please help which one is it
Answer:
17 g
Explanation:
what must happen first before a change of state can occur (change in mass, change in position, change in volume, or change in energy)
Answer:
Change in energy.
Explanation:
An energy change is required to shift one state to another or do any of the other listed.
SHOW WORK
What volume of concentrated nitric acid (15.8 M) is needed to prepare 4.0 L of a 2.0 M solution?
Which of these characteristics will produce the most water dense water
Answer:
High salinity, low temperature.
Explanation:
A lot of salt is left behind. This leads to water with very high salinity
The salinity of the water increases as more salt is dissolved in it. High temperature, density and salinity produce the most dense water.
What is salinity of water ?Salinity influences the physical properties of water, such as density and heat capacity, together with temperature and pressure.
When two water samples of the same volume are compared, the water sample with the higher salinity will have more mass and be more dense.
The ocean's salinity is raised by both sea ice production and ocean water evaporation. However, processes that reduce salinity, such as the ongoing inflow of fresh water from rivers, precipitation of rain and snow, and melting of ice, constantly balance out these "salinity rising" causes.
Thus, salinity ,density and high temperature produce the water dense.
To learn more about salinity of water refer the link below;
https://brainly.com/question/3096437
#SPJ2
A teacher wants to perform demonstration that illustrates both chemical and physical changes. Which would be the best demonstration that she could use? A) bending a piece of aluminum B) breaking a matchstick C) dissolving sugar in water D) burning a candle
Answer:
D) burning a candle
A demonstration that contains both physical and chemical changes will be BURNING OF A CANDLE.
This is because when a candle is lighted up, on the top of it (where we see flame) the oxygen and other gases present around will be chemically changed (burned up)
When the wax in the top of the candle will get melted due to the heat of the fire a physical change takes places.
What is always true of a strong base?
A. It does not dissociate at all in solution.
B. None of the original base remains in solution.
C. It partially dissociates into ions in water.
D. It forms a very concentrated solution when dissolved in water.
Explanation:
None of the original base remains in solution.
Answer:
C
Explanation: