Answer:
285.75 amu
Explanation:
CuSO4 mass = 159.609 amu
H2O mass = 18.02 amu
159.609 + 7(18.02) = 285.75 amu
Please answer fast thank you!!!
Answer:
okokokokomokokok
Explanation:
njiuuhhhjkjnn
Energy is transferred from an organism to the physical environment through __________.
A. respiration
B. heat loss
C. photosynthesis
D. consumption
what are three disadvantages of making and using plastic?
2. Which of these items would allow one scientist to reproduce the experiment of another scientist.
A.
B.
a strong hypothesis
a detailed scientific Journal
well-drawn graphs of the data
a complete list of all materials used
C.
D.
Answer:
answer us A I hope it helps u
what is the only thing in nature that can be a solid,liquid,or gas?
A.water
B.hydrogen
C.helium
D.oxygen
pls answer will give brainliest
Answer:
A. Water
Explanation:
Virtually every known substance can be referred to as MATTER, as long as it has weight and occupies space. Matter can exists in three different forms namely: solid, liquid and gaseous states.
However, each state of matter has its own unique property that characterizes it. WATER is the only matter that can exists in the three different states as follows:
- LIQUID - WATER
- SOLID - ICE
- GASEOUS - STEAM OR VAPOUR.
In which numbered position would a Period 4 element that is a metal with three valence electrons be located?
A) Position 13
B) Position 15
C) Position 20
D) Position 31
The position where a Period 4 element that is also a metal with three valence electrons would be located is: B) Position 15.
What is a periodic table?A periodic table can be defined as an organized tabular array of all the chemical elements, which is typically arranged in order of increasing atomic number or number of protons (in rows).
In Chemistry, a periodic table comprises seven (7) rows and eighteen (18) columns. Also, all chemical elements are arranged (grouped) on the periodic table based on their atomic number (number of protons).
In this context, the position where a Period 4 element that is also a metal with three valence electrons would be located is Position 15 on the periodic table.
Read more on periodic table here: https://brainly.com/question/18384230
Enter your answer in the provided box.
A gas initially at 5.48 L, 1.34 atm, and 61 °C undergoes a change so that its final volume and temperature are 1.32 L and 31 °C. What is its final pressure? Assume the number of moles remains unchanged.
atm
Answer:
5.06atm
Explanation:
Using the combined gas law equation;
P1V1/T1 = P2V2/T2
Where;
P1 = initial pressure (atm)
P2 = final pressure (atm)
V1 = initial volume (Litres)
V2 = final volume (Litres)
T1 = initial temperature (K)
T2 = final temperature (K)
According to the information provided in this question;
P1 = 1.34 atm
P2 = ?
V1 = 5.48 L
V2 = 1.32 L
T1 = 61 °C = 61 + 273 = 334K
T2 = 31 °C = 31 + 273 = 304K
Using P1V1/T1 = P2V2/T2
1.34 × 5.48/334 = P2 × 1.32/304
7.34/334 = 1.32P2/304
Cross multiply
334 × 1.32P2 = 304 × 7.34
440.88P2 = 2231.36
P2 = 2231.36/440.88
P2 = 5.06
The final pressure is 5.06atm
Which occurs when a warm fluid cools down?
A) Energy is released into the environment
B) Energy is absorbed from the environment
C) The density of the fluid decreases
D) The mass of the fluid decreases
THE CORRECT ANSWER IS A!
#edge2021 unit review 100%
Answer:
option A is correct answer of this question
hope it helps and your day will be full of happiness
The answer is A ¬ω¬
hope it helps and have good day (yes it's late and yes i do not care I'm doing it for points ×°×)
Calculate the mass of butane needed to produce 58.8 g of carbon dioxide.
Answer:
19.37g
Explanation:
1 mole CH4 gives 4 mole CO2
so 58 g gives 176 g CO2
(58/176)×58.8 g CH4 gives 58.8 g CO2
(P) has two isotopes : P -31 and P - 32 . Let's say that the percent abundance of P - 31 is 75\% and for P-32 it is 25 %. What is the average atomic mass of phosphorus?
Answer: 2.3% :)
............................
Answer: 34%
Explanation:
The molar mass for this compound is 102.1 g/mol.
The molecular formula for this compound is
Why is thermal energy from the sun transferred to Earth through electromagnetic waves, instead of any other type of thermal energy transfer?
A) Electromagnetic waves can carry energy through water
B) Electromagnetic waves can travel through empty space.
C) Electromagnetic waves can move through gases faster than other types of energy transfer.
D) Electromagnetic waves can move more energy than any other type of energy transfer.
THE CORRECT ANSWER IS B.
#edge2021
Answer: B) Electromagnetic waves can travel through empty space.
Explanation:
Conduction: This type of heat transfer happens when there is direct contact between the two object. Example: heating a pan on stove.
Convection: This type of heat transfer happens when there is a movement of fluid (liquid or gas) due to the movement of hot layers to the top and cold layers to the bottom which leads to convection currents. Example: Heating of swimming pool.
Radiation: This type of heat transfer happens when there is direct transfer of energy through empty space.The electromagnetic radiation from the surface of an object which is due to the object's temperature is radiation. Example: Heating of earth's surface.
sugar cannot be separated from sugar solution by filtering explain why?
Answer:
The sugar particles are so small that they have dissolved in the water, and can easily pass through the filter.
Answer:
Sugar can not be separated due it has very fine particles.
Explanation:
When we use to separate sugar with salt they both are dissolved with the water.
What is the meaning of reference point?
Answer:
Reference point, or frame of reference, a system of geometric axes in relation to which measurements of size, position, or motion can be made. Reference point, a geometrical point used to define the location of another point
Explanation:
copper(II) carbonate undergoes thermal decomposition. One of the pro
al decomposition is copper(II)oxide.
State the colour change of the solid seen during the reaction
start colour
end colour
Write a chemical equation for the thermal decomposition of copper(II) carbona
Answer: The green copper (II) carbonate [tex](CuCO_3)[/tex] changes to black copper oxide [tex](CuO)[/tex]
[tex]CuCO_3(s)\stackrel{\Delta }\rightarrow CaO(s)+CO_2(g)[/tex]
Explanation:
Decomposition is defined as the chemical reaction in which a single compound gives two or more simple substances. It requires energy to break the bonds between reactants, thus is an endothermic process.
Thermal decomposition uses heat for decomposition.
The chemical equation for thermal decomposition of copper (II) carbonate is:
[tex]CuCO_3(s)\stackrel{\Delta }\rightarrow CaO(s)+CO_2(g)[/tex]
The green copper (II) carbonate [tex](CuCO_3)[/tex] changes to black copper oxide [tex](CuO)[/tex]
CHEMISTRY HELP PLEASE
how do you determine what unit to put k in (rate law)?
I think the first option
Explanation:
Sorry If I was wrong.
Can someone help me with the rest of the questions pls
Answer:
2. About 138 g of KI will dissolve in 100 g of water at 10°C
3. 34.5 g of KI will dissolve in 25 g of water
4. The solution is not saturated but is unsaturated
Explanation:
From the graph:
1. KI is more soluble than KCl at 10°C because approximately 138g of KI dissolves at 10°C compared to 30 g of KCl per 100 g of water
2. About 138 g of KI will dissolve in 100 g of water at 10°C
3. 138 g of KI dissolves in 100 g of water at 10°C
In 25 g of water which is 1/4 × 100 g of water, 138/4 g = 34.5 g of KI will dissolve
Therefore, 34.5 g of KI will dissolve in 25 g of water
4.At 20 °C, a saturated solution of NaNO₃ will contain about 88 g of NaNO₃ in 100 g of water.
The solution prepared by the chemist contains 45 g of NaNO₃ in 100 g of water at 20 °C. The amount of solute present in the solution is less thanthe solvent can dissolve at that temperature, therefore, the solution is not saturated.
Weathering and erosion can turn metamorphic rock into sediment. Which of the following processes would turn that sediment into sedimentary rock? * 10 points weathering and erosion compaction and cementation heat and pressure melting
Answer:
compaction and cementation
Explanation:
sedimentary rock is layered rock, in order to become sedimentary it most be compacted to form layers and cemented to become hard. This is what i think. Hope i can help :)
Which of the following is an indication of a chemical reaction?
freezing
melting
release of heat
all of the above
Answer:
C
Explanation:
A chemical reaction is usually accompanied by easily observed physical effects, such as the emission of heat and light, the formation of a precipitate, the evolution of gas, or a color change.
How could the age be interpreted in a rock in which the blocking temperature has been reached?
Which of the following statements is
incorrect about heat and
temperature?
Which of the statements below are TRUE, knowing what we know about forces and motion?
Choose ANY that are TRUE.
A. Objects at rest need a force to keep them at rest.
B. A net force causes objects to accelerate.
C. If forces acting on an object are balanced, the object can change its velocity.
D.Inertia means that an object will keep its same state of motion.
Mass and weight are the same thing and are both forces.
Answer:
b
Explanation:
if there is a net force acting on an object, the object will have an acceleration and the objects velocity will change
How many grams of oxygen are required to react with 2.05 g
g
of dihydrogen sulfide?
Answer:
38 g
Explanation:
I think thats the answer in your question
this is when an organism like insects or plants become trapped in amber
thats very nice lol, things stuck in amber are very cool
Explain why carbon dioxide is a gas, water
is a liquid, and salt is solid at room temperature based on how the particles
are held together.
Answer:
Carbon dioxide is a gas because the particles surrounding it are more spread out and free from each other. Water is a liquid because the particles are partially spread out and have a medium space to move around. And due to the room temperature, salt's particles can either be hot and move rapidly, or be cold and not move rapidly.
Explanation:
What is the best way to ask out a girl you really like but your afraid to ask her out
Answer:
I would say try hinting it to her, not in an obvious way but kind of flirt. Make sure to be yourself!
What contribution did Niels Bohr make to atomic theory?
O A. He made a model of the atom called the plum-pudding model.
B. He performed an experiment that determined the charge of the
electron.
C. He made a model of the atom, with electrons circling the nucleus.
D. He discovered that the photoelectric effect was caused by light
shining on metal.
Answer:
C
Explanation
His greatest contribution is the atomic model
You have a 9.51 mol sample of an
unknown element. If the sample has a mass
of 1157.9376 g, what element is this?
Answer:
Antimony
Explanation:
Number of moles = 9.51 mol
Mass= 1157.9376 g
The identity of an element is obtained from it's Molar mass.
This is given by the equation;
Molar mass = Mass / Number of moles
Molar mass = 1157.9376 g / 9.51 mol
Molar mass = 121.76
The only element with molar mass of 121.76 is Antimony
How many atoms are in 0.35 moles of carbon (SHOW WORK)
Answer:
2.108x10²³ atoms
Explanation:
In order to convert from moles (of any substance) to atoms (or molecules), we need to use Avogadro's number: It is the number of units in one mol.
In one mol there are 6.023x10²³ atoms.
0.35 mol * 6.023x10²³ atoms/mol = 2.108x10²³ atoms
Thus, in 0.35 moles of carbon there are 2.108x10²³ atoms.
The upper part of the mantle is
Hard
OR
Soft
Answer: Hard
Explanation:
The upper part of the mantle is hard as it contains thick rock layers. The mantle's upper layer and the crust make up a brittle and rigid rock that's referred to as the Lithosphere.
The upper mantle starts below the Earth crust and then stops at the start of the lower mantle. We should note that the upper mantle results in the movement of the tectonic plates.