Answer:
The ionisation energy increases.
Explanation:
This is because the force of attraction between the electrons and the positive nucleus will increase
piece of copper iron silver and gold are dropped into a solution of iron sulphate the piece that will get a coating of a copper is known as
Pieces of copper, silver and gold are dropped into a solution of iron sulphate. The piece that will get a coating of copper is. ... Therefore, none of the three metals can displace iron from its salt solution. Hence, we observe that no reaction takes place and none of the pieces get coated.
Answer:
If it were a piece of iron dropped into a copper sulfate solution, precipitated copper would coat the iron
A teacher gives students four liquids commonly found in the kitchen - vinegar, apple juice, dish detergent, and milk -
and pH indicator strips, which measure acidity. The teacher asks the students to put the liquids in order from most
acidic to most basic.
What type of investigation could the students conduct to determine the correct order for the liquids? |
The type of liquid is the
The pH is the
Answer:
I think pH strips wouldn't be enough to arrange them in the recquired order what u need is a universal indicator
Explanation:
With the use of universal indicator u can be able to arrange them
Answer:
Comparative, independent, dependent
Explanation:
You're comparing which has the most ph, and the ph is dependent on the liquid leaving the liquids to be independent.
Mendeleev's periodic table of elements was created in 1901.
O A. True
O B. False
Explanation:APΕX
A sample of wood with a mass of 30 g has its
temperature changed from 10° to 45° C. In the
process, it releases 90 J of heat. What is its specific
heat?
Answer:
0.086J/g°C
Explanation:
The following data were obtained from the question:
Mass (M) = 30g
Initial temperature (T1) = 10°C
Final temperature (T2) = 45°C
Change in temperature (ΔT) = T2 – T1 = 45°C – 10°C = 35°C
Heat (Q) released = 90J
Specific heat capacity (C) of wood =..?
We can obtain the specific heat capacity of the wood as follow:
Q = MCΔT
90 = 30 x C x 35
Divide both side by 30 x 35
C = 90/(30 x 35)
C = 0.086J/g°C.
Therefore, the specific heat capacity of the wood is 0.086J/g°C.
pls pls help me 20 minutes left pls help
Answer:
seed and spores
Explanation:
I wish I'm correct
hope this helps
If I'm wrong SORRY
Classify the changes involved in the following processes as physical or chemical changes: (a) Photosynthesis (b) Dissolving sugar in water (c) Burning of coal (d) Melting of wax (e) Beating aluminium to make aluminium foil (f) Digestion of food
Explanation:
a. chemical change
b. Physical change.
c. chemical change.
d. chemical change
e. Physical change.
f. chemical change.
does the volume of a liquid change
Answer:
Yes it does change
Explanation:
Temperature __________ as the average kinetic energy of a gas increases. stays the same decreases increases
Answer:
increases
Explanation:
Temperature is essentially the measure of average kinetic energy, so the higher the average kinetic energy, the higher the temperature.
¿ que uso e damos ala tecnología en nuestra vida diaria ? ¿que impacto tendría el no contar con la tecnología? ¿cuales son las nuevas tecnologías? ayúdenme por favor
Answer:
We in daily life use technology to pay virtually through virtual wallets, work at home, purchase packages to travel abroad, many businesses handle virtual advertising, that is why it is called the new "market window" to social networks or internet pages, university universities playful methods through virtual campuses or virtual classes.
The serious impact is very great since many of the activities of daily life change, and they will return to being as before the technology affected in our lives, reversing customs and technological generations.
The new technologies are: computer science, engineering, arquetectonica, scientific, industrial, commercial ... Where a fourth industrial revolution arises where many processes that were carried out by humans today would be automated by computers or technological devices that improve market efficiency, of consumption and industrialization.
Explanation:
In addition, new technologies are those that are based on electronic devices that are based on social communication, the development of social networks and technology based on global communications.
In general, atmospheric pressure is greatest near Earth's surface and ____ as you move upward away from sea level.
(decreaes
(doubles
(stays the same
(increaes
Answer my question please
Answer:
Explanation:F
Sulfur dioxide is released when fossil fuels burn. What does sulfur dioxide cause? ASAP PLZ
Answer:
acid rain
Explanation:
When sulfur dioxide combines with water and air, it forms sulfuric acid, which is the main component of acid rain. Acid rain can: cause deforestation.
When an electron moves from a lower to a higher energy level, the electron _____.
A. moves closer to the nucleus
B. absorbs a continuously variable amount of energy
C. always doubles its energy
D. absorbs a quantum of energy
Answer:
When an electron moves from a lower energy level to a higher energy level, energy is absorbed by the atom. So B.
Explanation:
When an electron moves from a higher to a lower energy level, energy is released (often as light).
When an electron moves from a lower to a higher energy level, the electron absorbs a quantum of energy (Option D).
When an electron moves from a lower to a higher energy level, the electron:
A. moves closer to the nucleus. FALSE. It moves farther from the nucleus since lower energy levels are closer to it.
B. absorbs a continuously variable amount of energy. FALSE. According to the quantum theory, it absorbs a discrete (not continuously variable) amount of energy.
C. always doubles its energy. FALSE. The increase in the energy depends on the energy of the quantum absorbed.
D. absorbs a quantum of energy. TRUE. This is stated by the quantum theory.
When an electron moves from a lower to a higher energy level, the electron absorbs a quantum of energy (Option D).
You can learn more about energy levels here: https://brainly.com/question/3473333?referrer=searchResults
What is the pH of a 0.45 M solution of hydrochloric acid
pH = 0.35
Explanation: hope this helps
Answer: 0.35
Explanation:
Exponatial notation is used for a/ writing very small numbers b/writing very large numbers c/avoid tedious work d/all above
Answer:
The correct answer is option d/ "all above".
Explanation:
Exponential notation is a way of expressing mathematical equations by simplifying numbers that could be very small or very large. The number included within the exponential notation (the exponent) describe how many times the number included in the base is multiplied. If the exponent is an integer the number is very large, while if the exponent is a ratio the number is very small. This avoids the tedious work of writing the complete number that results from the exponential multiplication.
Which symbol can be used to indicate the pressure at which a chemical reaction is carried out?
25°C
2 atm
Pt
Answer:
2 atm
Explanation:
Different symbols have different meanings in chemistry. For example, the symbol Δ = adding energy to the reactants.
To identify whether the reactants combine with a specific pressure, we have to use the symbol atm, in such a case 2 atm.
Hope that helps!
A very good example of soft water is A. Distilled water B. Sea water C. Underground water D. Polluted water
Answer:
The answer is option A.
Distilled water
Since all the chemicals that will cause hardness in the water has been removed.
Hope this helps.
What is the correct order of processes in the accretion of planetesimals?
Masses of matter form around dust grain, masses of matter collide, and atoms and molecules are added to dust grain.
Masses of matter collide, masses of matter form around dust grain, and atoms and molecules are added to dust grain.
Atoms and molecules are added to dust grain, masses of matter form around dust grain, and masses of matter collide.
Masses of matter collide, atoms and molecules are added to dust grain, and masses of matter form around dust grain.
Answer:
Atoms and molecules are added to dust grain, masses of matter form around dust grain, and masses of matter collide.
Explanation:
Planetesimals are the foundation or fundamentals of planet formation. The mode of the formation is called accretion. In this process, dust grains or particles mixes with atoms and molecules to form a massive mass which later coalesce or collide to form planets.
The size of the planet formed is determined by the amount of masses of matter that collide.
Answer:
c
Explanation:
Se mezclaron 2 soluciones de dicromato de potasio : 250 ml de una molaridad de 1.24m y 380ml de otra 0.65N. Determina la molaridad de la solución restante
Answer:
0.56M es la concentración de la solución restante
Explanation:
La molaridad de una solución es una unidad de concentración definida como la relación entre las moles de soluto (En este caso, dicromato de potasio) y el volumen de la solución.
Sabiendo que para el ion dicromato:
6M = 1N
La normalidad del ion dicromato se obtiene dividiendo entre 6 su molaridad.
Moles de dicromato en las dos soluciones son:
1. 0.250L × (1.24mol / L) = 0.310 moles de dicromato
2. 0.380L × (0.65eq / L) × (1eq / 6mol) = 0.042 moles de dicromato
Así, las moles totales de dicromato de potasio son:
0.310moles + 0.042 moles = 0.352 moles de dicromato
En un volumen de 250mL + 380mL = 630mL = 0.630L
La molaridad de la solución es:
0.352 moles / 0.630L =
0.56M es la concentración de la solución restanteWhat happens to an ocean current when it hits a continent? a. It changes direction. c. It moves toward the equator. b. It moves toward the poles. d. It speeds up.
Answer: I think it is D
Explanation:
Answer:
D
Explanation:
i took the test
Which statement is true of a reversible reaction at equilibrium?
А.
The concentration of reactants is less than the concentration of products.
B.
The concentration of reactants and the concentration of products are equal.
с.
The concentration of reactants is greater than the concentration of products.
D.
The concentration of reactants and the concentration of products are constant.
Ε.
The concentration of reactants is decreasing and the concentration of products is increasing,
Answer:
D.
The concentration of reactants and the concentration of products are constant.
Explanation:
pls mark as brainliest
What is the complete ionic equation for the reaction between Na 2 SO 4 and CaCl 2 ?
Answer:
Na2SO4 + CaCl2 → 2Na+ SO4 2- + Ca2+ 2Cl-
Hope this helps.
Answer:
2Na+(aq)+SO42-(aq)+Ca2+(aq)+2Cl-(aq)->CaSO4(s)+2Na+(aq)+2Cl-(aq)
Explanation:
Which of the following has the shortest bond lenght Options A). H2 B).N2 C).O2 D).F2
Answer:
B. N2
Explanation:
The triple bonds pull the atoms closer together, and since N2 is the only molecule with the triple bond, it is the shortest bond length.
Mass is measured against a standard using a
Answer:
balance
Explanation:
What Mass Of CH4 formed When 8.3 moles Of CO React With Hydrogen according to this equation 2CO react with 2H2 give As CH4 react With CO2
Answer:
66.4g
Explanation:
CO:CH4
2:1
CH4 moles= 8.3 ÷ 2
= 4.15 moles
CH4 = 12+ 4(1)= 16g
1 mole of CH4-------> 16g
4.15moles
(4.15x16)÷1
=66.4g
If 0.360 J of heat is added to 0.7402 g of water, how much will the temperature increase?
Answer:
You are not supposed t9 be cheating
Explanation:
Answer:
ΔT = 0.116 °C
Explanation:
Using Formula
Q = mc ΔT
Where Q = 0.360, c = 4.184 and m = 0.7402
ΔT = Q/mc
ΔT = 0.360/ (4.184)(0.7402)
ΔT = 0.360 / 3.097
ΔT = 0.116 °C
So, The change in Temperature/Increase in Temperature is 0.116 °C
Write the name of CH3 ----CH2 ---- CH3
Answer:
PROPANE AN ORGANIC HYDROCARBON
Explanation:
Answer:
ORGANIC HYDROCARBON
Explanation:
kk
Select the correct choice there's only one answer.
Answer:
Option C is the correct option.The Valence electrons in S
Explanation:
Sulphur has highest effective nuclear charge as in a period there is increase in effective nuclear charge from left to right.Sulphur is in the end in a period leaving Mg and Al in left side.
Hope this helps....
Good luck on your assignment...
BeWhat direction do you predict the addition of a base to the solution containing bromophenol blue will drive the equilibrium? Explain your prediction in terms of le chatelier principle
Answer:
Explanation:
Le Chatlier's principle expresses that when a system in equilibrium is irritated by outside changes, the system reacts by altering the equilibrium concentrations of its segments to such an extent that the annoyance is invalidated and accomplishes an equilibrium state at this bothered condition, with equilibrium concentrations not quite the same as in the past.
Bromothymol blue is a phenolic suflone that demonstrations a weak acid in aqueous media. Being a weak acid, it doesn't ionize totally and builds up a harmony with its related and separated structure.
From Le Chatlier's guideline, it very well may be found out that when a strong acid is included, the last's finished separation, without foundation of equilibrium causes a spike in the proton concentration in the medium. This expansion in proton concentration is the outer bother and the framework will react by shifting to one side, consequently protonating more dianions of bromothymol with an end goal to invalidate the proton concentration increment.
Thus, when a base is included, it devours the protons in the medium to shape water. In this way, the concentration of protons in the medium declines. To repay this change, the equilibrium reacts by shifting to the privilege i.e., it makes a greater amount of the unbiased pointer separate into the dianion and protons, hence endeavors to invalidate the bother.
Lithium bromide is a(n) ___________.
A. ionic compound
B. covalent compound
C. empirical fomula
D. molecular formula
Answer:
Ionic compound
Explanation:
Lithium gives away an electron and Bromine takes an electron
Hope this helps! :)
