Answer:Agas loses kinetic energy to become a liquid and then becomes a solid
i believe i had this before but where is the graph
Explanation:
please mark this answer as brainlest
B. A solid gains kinetic energy to become a liquid and then becomes a gas
Which type of reaction is described by the following equation? Na2O (s) + 2CO2 (g) + H2O (g) produces 2NaHCO3 (s)
Answer:
If the reaction is going from left to right it would be synthesis, if going right to left it would be decomposition.
Explanation:
Na2O (s) + 2CO2 (g) + H2O (g) = 2 NaHCO3 (s)
Left Side
Na = 2
O = 6
C = 2
H = 2
Right Side
Na = 2
O = 6
C = 2
H = 2
Ok so is balanced already, though initial equation in question had an error in regards to the left hand side the ) should have been an O.
Hmm
Na2O (s) + 2CO2 (g) + H2O (g) = 2 NaHCO3 (s)
If it was going from right to left would be decomposition
But going from left to right it would be synthesis
What is the molar mass of CaS
=molar mass( CaS )
= 40.08+32.07
=72.15 g mol-1
Molar mass= atomic weight = (Ca= 40.08 and S= 32.07)Answer:
72.143 g/mol
Explanation:
What is the shape of the H2S molecule?
bent
pyramidal
linear
trigonal planar
Answer:
The answer is bent
Answer:
The molecule is bent
Explanation:
What is the primary difference between a hypothesis and a theory?
Answer: A hypothesis is an explanation for observations. A theory is an explanation for what has been shown many times.
Explanation:
What is the value of log 43? Use the calculator. Round your answer to the nearest tenth.
Answer:
1.6
Explanation:
log 43 = 1.6335
B, 1.6
Explanation: E21
if an experiment produces 5g but should have made 500 g what is the percent yield
explain how redox reactions are the source of electron flow in batteries. how can a dead battery be said to have attained equilibrium?
Answer:
can u help me whith one of my qutions
Explanation:
Which of the following atoms has the largest atomic radius? Provide an explanation
a Hydrogen
b. Sodium
C Lithium
d Rubidium
Answer:
Rubidium 265 pm
Explanation:
As can be seen in the figures below, the atomic radius increases from top to bottom in a group, and decreases from left to right across a period
Hydrogen 53 pm
Lithium 167 pm
Sodium 190 pm
please help quick im on a test and i only got an few mins left
What Is the Reactivity Series? ...
How Do Glow Sticks Glow? ...
How Do You Get Different Coloured Fireworks? ...
What Is an Alloy? ...
Answer:
hey
Explanation:
Answer:
I'm really not sure
Explanation:
So there's the answer
How do cold temperatures extend the amount of time an organ can be
detached from the body before a transplant?
A. Cold temperatures provide the organ
with
oxygen.
B. Cold temperatures increase cell replication in the organ.
C. Cold temperatures slow the rate at which cells die.
D. Cold temperatures increase the amount of oxygen the organ
needs.
Answer:
cold temperatures slow the rate at which the cells die.
Explanation:
the answer is c
The correct answer is option C. Cold temperatures slow the rate at which cells die.
At what temperature do cells die cold?Temperatures between 46 ° C and 60 ° C are associated with irreversible cell damage proportional to exposure time (8, 9). Protein coagulation occurs quickly between 60 ° C and 100 ° C, causing irreversible damage to important cytosol and mitochondrial enzyme-nucleic acid-histone complexes.
Cold temperatures can also slow down cell growth by preventing cell hypertrophy. In extreme situations, Prolonged exposure to freezing temperatures can cause intracellular fluids to begin to freeze, forming crystals that penetrate the membrane and eventually kill the cells.
Perhaps by reducing elasticity and preventing the uptake of lipid substances into the expanding membrane. Tissue swelling at low temperatures causes lesions in the cell membrane and can cause cold wounds.
Learn more about Cells in cold temperatures here: https://brainly.com/question/1657100
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Using the phase diagram for H2O what phase is water in at 1 atm pressure and 50oC? A. It is in the solid phase B. It is at its melting point C. It is in the liquid phase D.It is in the gas phase
Answer:
C. It is in the liquid form.
Explanation:
1 atm is the normal pressure, so the question is really just what is H2O at 50C. The answer to that is liquid.
Also, I don't know why someone deleted my answer. My answer was correct and had a correct solution.
By examining the phase diagram of water it is clear that, at 1 atm pressure and 50 degree Celsius temperature, water exists at liquid state.
What is phase diagram?Phase diagram of a substance graphically represents the state of the substance at different temperature and pressures. Phase diagram helps to understand the point at which the three state of matter coexists and that point is called triple point.
Various physical properties can be determined using the phase diagram of a substance. Melting point, boiling point, freezing point etc. can be identified for the substance from its phase diagram.
Phase diagram of water represents the three states of water that are gas, liquid water and ice. Water freeze at 0°C and boils at 100 °C . at 1 atm pressure and 50 degree Celsius, water exists in liquid state.
To find more on phase diagram, refer here:
https://brainly.com/question/16945664
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An electron na hydrogen atom moves from level to level 4 The electron then drops from level 4 to level 2. Which statement
bese most likely test
The energy absorbed in the first move equals the energy released in the second move
The energy absorbed in the first move is greater than the energy released in the second move
The energy released in the first move equals the energy absorbed in the second move
The energy released in the first move is greater than the energy absorbed in the second move
Answer:
The energy absorbed in the first move is greater than the energy released in the second move.
Explanation:
The greater the level number the greater the energy.
A movement up a level requires energy so energy id absorbed.
Dropping down a level releases energy.
PLEASEEEE HELP MEEE
For the reaction 2H2 + O2 → 2H2O, how many grams of water are produced from 26.0 mol of hydrogen?
Which shows the correct order of steps in the formation of coal?
Layers of dead plants pile up - plant matter is buried by rocks and dirt - dead plants fall in swamp - plant matter is
compressed and is exposed to heat - coal forms
Plant matter is compressed and is exposed to heat - dead plants fall in swamp - layers of dead plants pile up - plant
matter is buried by rocks and dirt - coal forms
Plant matter is buried by rocks and dirt - dead plants fall in swamp - layers of dead plants pile up - plant matter is
compressed and is exposed to heat - coal forms
Dead plants fall in swamp - layers of dead plants pile up - plant matter is buried by rocks and dirt - plant matter is
compressed and is exposed to heat - coal forms
Answer:
it is Dead plants fall in swamp, Layers of dead plants pile up, Plant matter is buried by rocks and dirt, Plant matter is compressed and is exposed to heat, and Coal forms.
if iam right please make this into brainlest
Which is the best summary of the kinetic theory?
A. Potential energy is converted to kinetic energy.
O B. Atomic motion is constant at all temperatures.
C. Atoms and molecules are always in motion.
O D. Energy cannot be created or destroyed.
SUBMI
Answer:
C. Atoms and molecules are always in motion.
It is important for _______ to participate in conservation efforts. a. government b. business c. citizens d. all of the above Please select the best answer from the choices provided A B C D
Answer:
D
Explanation: government
business
citizens
The correct answer is option d all of the above.
What are the conservation efforts?Conservation refers to the preservation and care of these resources for future generations. It entails preserving species variety, DNA, and ecosystems, as well as environmental services like nitrogen cycling.Learn more about conservation efforts are:-
https://brainly.com/question/1406164
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What is thought to be another cause of the large size of our brain compared to chimpanzees?
Answer:
Compared to early humans our brains seemed to have increased in size, and part of the cause may be because of things like Climage change, ecology and social competition
Explanation:
What is the mass of two moles of HNO3?
Answer:
126 grams
Explanation:
What is the mass of two moles of HNO3?
H = 1g/mole = 1+
N = 14g/mole = 3-
O = 16g/mole = 2-
HNO3 = 63g/mole
What do we call each step that makes up a reaction mechanism?
A. reaction step
B. individual step
C. Elementary Step
D. reactant step
Answer:
c elementary
Explanation:
they are formed and then created later
Why is burning fossil fuels negative
Answer:
it causes alot of harm to the earth.
Explanation:
earthquakes
an so on
Which of the following represents a 1.00 M (M = mol/dm3) aqueous solution of glucose (C6H12O6)?
A. 180 g glucose per 1000 cm3 solution
B. 10.0 g glucose per 10.0 cm3 water
C. 90.0 g glucose per 500 cm3 water
D. 0.100 g glucose per cm3 solution
Which is one way that a short-term environmental change will most likely affect organisms within an ecosystem?
O It will lead to larger populations.
O It will lead to speciation.
O It will lead to adaptation.
O It will lead to forced migration.
Answer:
It will lead to forced migration.
Explanation:
Changes in ecosystems affect living organisms. An ecosystem is a self supporting unit in which there is an exchange of materials and energy between the living and non living parts. The living part of an ecosystem is called its biotic component. This includes the organisms that live within the ecosystem. The nonliving parts of the ecosystem such as topography, rainfall etc are called abiotic components of the ecosystem.
A short-term environmental change usually forces organism to leave an ecosystem in their quest for survival. For instance, when short term environmental changes such as a sudden drop in rainfall causes drought, organisms migrate in order to obtain food and water. This is a forced migration.
Answer:
It will lead to forced migration.
Explanation:
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When we move from the bottom to the top of the periodic table:
Electronegativity increases and ionisation energy decreases
Both electronegativity and ionisation energy decreases
Both electronegativity and ionisation energy increases
They remain the same
Answer:
When we move from the bottom to the top of the periodic table:
Both electronegativity and ionisation energy increases.
Explanation:
The ionization energy I is the energy needed to start an electron to a gaseous atom, isolated and in a fundamental state. The electrons are attracted to the nucleus, so it is necessary to provide energy to start them. You should keep in mind that the electrons of the last layer are always lost, because they are the weakest attracted to the nucleus.
In a group, the ionization energy increases upwards because when passing from one element to the bottom, it contains one more layer of electrons. Therefore, the valence layer electrons, being further away from the nucleus, will be less attracted to it and it will cost less energy to pluck them.
On the other hand, electonegativity is defined as the ability of an element to attract electrons that link it to another element.
When descending within the same group, the atomic radius increases and the ionization energy decreases, indicating that the electrons are less attracted to the nucleus and therefore the electronegativity decreases from top to bottom.
For addition and subtraction, round the result to
match the measurement with the fewest decimal
places. For example,
3.4 cm + 4.75 cm = 8.2 cm
because 3.4 cm is only measured to the nearest
0.1 centimeter.
Choose the answer with the correct number of
significant digits.
4.6 cm + 2.35 cm =
v cm
Answer:
7.0
Explanation:
second question is 4.90 third question is 3.0 fourth question is 6.6
Answer:
The first answer is 4.6 cm + 2.35 cm = 7.0 cm
The second answer is 8.45 cm – 3.55 cm = 4.90 cm
The third answer is 1.2 cm × 2.54 cm = 3.0 cm^2
Then the last answer is 6.6 cm^3 ÷ 1.00 cm^2 = 6.6 cm
I hope this helps, Its correct on edge 2020 :)
Where do food molecules for cecropia trees come from?
Answer:
Central and South American forests.
Explanation: https://brainly.in/question/7540305
4) A 4.00 L balloon is filled with 0.297 moles of helium gas with a pressure
of 0.910 atm. Calculate the temperature, in Kelvin, of the gas. (KEEP 3 SIG
FIGS; DO NOT TYPE ANY UNITS)*
Answer: 149
Explanation:
Using the ideal gas equation; PV = nRT
P= Pressure = 0.910 atm, T= Temperature = ?
V= Volume = 4.0L R = Gas constant = 0.08206 L.atm/mol/K
n = number of moles = 0.297
Making 'T' the subject of the formular, we have;
T = P V/ n R = 0.910 x 4 / 0.297 x 0.08206
= 149
Which equation represents neutralization?
6Li(s) + N2(g) → 2Li3N(S)
2Mg(s) + O2(g) → 2MgO(S)
2KOH(aq) + H2SO4(aq) → K2SO4(aq) + 2H2O(l)
Pb(NO3)2(aq) + K2CrO4(aq) → 2KNO3(aq) PbCrO4(s)
Answer:
2KOH(aq) + H2SO4(aq) → K2SO4(aq) + 2H2O(l)
Explanation:
A neutralization reaction refers to any reaction between an acid and a base to form salt and water only. In a neutralization reaction, the key reaction that takes place to produce water is shown ionically below;
H^+(aq) +OH^-(aq) ----> H2O(l)
Looking at all the options provided, our gaze will have to settle on the reaction;
2KOH(aq) + H2SO4(aq) → K2SO4(aq) + 2H2O(l)
We can clearly see that there is an acid that reacts with a base to form a salt and water. The base contains the OH^- ion while the acid contains the hydrogen ion.
This is the only reaction of this sort among the options hence it is the correct answer.
Label the following ph paper color as either strong / weak acid, strong/weak base, or neutral
1. neutral
2.strong base
3.weak acid
4.strong acid
5.weak base
In the reaction Fe2O3 + 3CO a 2Fe + 3CO2, 10 moles of solid iron and 15 moles of carbon dioxide are produced from 5 moles of iron (|||) oxide and 15 moles of carbon monoxide (CO). What is the ratio of carbon monoxide to solid iron
Answer:
Ratio is 3:2
3CO = 2Fe or 1.5 CO = 1 Fe
Explanation:
Fe2O3 + 3CO = 2Fe + 3CO2
Fe2O3 = Iron (|||) oxide
CO = Carbon monoxide
Fe = Solid Iron
CO2 = Carbon dioxide
Excellent is already balanced.
10 Moles Fe and 15 Moles of CO2
5 Moles Fe2O3 + 15 Moles 3CO = 10 Moles Fe + 15 Moles 3CO2
What is the ratio of carbon monoxide to solid iron
Ratio is 3:2 or 1.5 CO = 1 Fe
how does the sun rise and set on the spring and fall equinox
Answer:
Actually, the Sun only rises due east and sets due west on 2 days of the year the spring and fall equinoxes! On other days, the Sun rises either north or south of "due east" and sets north or south of "due west." ... At the fall equinox, the Sun rises due east and sets due west.
Explanation:
Sunrise and Sunset - Stanford Solar Center
