Answer:
a
Explanation:
organs are the mouth, esophagus, stomach, small intestine, large intestine, and anus. The liver, pancreas, and gallbladder are the solid organs of the digestive system. The small intestine has three parts.
Hydrologers study the availability of fresh water on the planet.
Answer:
Hydrologists study how water interacts with the earth's crust. For example, they may study how rainfall and snowfall cause erosion, create caves, percolate through soil and rock to become groundwater, or eventually reach the sea.Hydrologists strive to improve water quality and increase our access to water so that we can continue to make use of it in all the ways that are necessary to our lives. A hydrologist measures the stream flow in a tributary to the Coeur d'Alene River. layers of gases surrounding a planet or other celestial body
atoms of which of elements will form covalent bonds in a compound
A. C and O
B. Na and F
C. Co and Fe
D. Li and Al
Kinetic energy is a measure of a particles what?
A: Size
B: Motion
C:Color
D:Weight
what type of reaction is Pb + CuCl2 ---> PbCl2 + Cu
The above reaction is a Single displacement reaction , in which lead (Pb) being more reactive displaces Copper (Cu) from its compound [tex](\mathrm{CuCl_2})[/tex] and forms Lead Chloride [tex](\mathrm{PbCl_2})[/tex].
[tex] \boxed{\mathrm{Pb + CuCl_2 \rightarrow PbCl_2 + Cu}}[/tex]
_____________________________
[tex]\mathrm{ \#TeeNForeveR} \: ☃[/tex]
If I initially have a gas at a pressure of 1260 kPa, a volume of 23 liters, and a temperature of 200 K, and
then I raise the pressure to 1595 kPa and increase the temperature to 300 K, what is the new volume of
the gas?
10OIS
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Yusef is doing an experiment to find out how the amount of sunlight affects the growth of a seedling. He has three identical pots
containing grass seeds he planted at the same time. He puts them in windows that receive different amounts of sunlight each day.
Every day. Yusef looks at the pots and records his observations. What is the independent variable in Yusef's experiment?
OA type of soil
OB type of seedling
Ос.
amount of water
OD
amount of sunlight
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Answer:
asdffafAFSAfdsdf
Explanation:
Two samples of hot unknown metals of equal temperatures are dropped in separate containers of water at 30 degrees Celsius. The final temperature of sample A is 33.5 degrees, and the final temperature of sample B is 31.8 degrees. Which metal sample had the highest specific heat?
Answer:
Sample B has the highest specific heat
Explanation:
Specific heat of a material is defined as the heat necessary to increase in the temperature of 1g of material in 1°C.
The material with the highest specific heat requires more energy to increase its temperature.
In the problem, sample A and B are under the same amount of energy but sample A increases more its temperature. That means sample A has the lowest specific heat and:
Sample B has the highest specific heatWhat color will the
flame turn if we
immerse a steel
wire in a barium
chloride solution and
then heat it? Why does that happen?
Answer:
Clean a platinum or nichrome (a nickel-chromium alloy) wire by dipping it into concentrated hydrochloric acid and then holding it in a hot Bunsen flame. Repeat this until the wire produces no color in the flame.
Describe and show an example of valence electrons. What is a common trend you can remember to help you understand valence electrons?
Explanation:
valency from right to left in a Periodic Table in same period first increases then decreases and from top to bottom it is same for a same group
How many electrons are in an ion of calcium (Ca2+)?
A. 2
B. 18
C. 0
D. 22
Can someone pls pls help me with these questions?!?!
Answer:
13) What common form of energy (not including kinetic or potential) is not included in the “Energy Symbols” key that would normally be present in these examples?
1) Sound Energy
2) Magnetic Energy
14)Look carefully at each of the four systems shown above. Knowing what we have discussed about energy conversions, identify (list) at least three different places where this form of energy (sound) should be “produced”.
1) When you open the water tap, in the turbine and the sound of the light bulb.
2) In the light bulb
3) The sound of the kettle, the turbine and when water is boiling.
4) The movement of the wheel of the bicycle, the turbine and the light bulb.
Identify two ways that temperature plays a role in chemical changes.
Answer:
Increasing the temperature will cause chemical changes to occur faster. Decreasing the temperature, causes the particles to lose energy which causes them to move around less and slower. The less they move, the less collisions occur, and the less reactions occur between the chemicals = slower reaction rate.
Explanation:
Define Malleability.
Ty!!
Answer:
Malleability is a capability of making shaped or extended by hammering.
For example:
making a a ring of gold by hammering and heating gold.
An electric kettle uses electrical energy to boil water. Energy from the electricity is transferred to the water, heating it up. An electric ice maker also uses electrical energy, but it freezes water to form ice. Since energy can’t be created or destroyed, and water loses potential energy when it freezes to form ice, what happens to the energy put into the ice maker and the energy released by the water?
Answer:
Since energy can’t be created or destroyed, and water loses potential energy when it freezes to form ice. The energy remains electrical but then changes to kinetic when Enough energy is released.
Explanation:
Answer:
Explanation:
The overabundance of electrical energy acquired by water during the ice framing process is taken out as likely energy to keep up with the law of energy conservation. The electrical energy given to the ice generator pivots the engine inside the blower (compressor). The coolant available inside the blower is compressed and this pressure is accomplished alongside the creation of heat energy. The heat energy is delivered into the external encompassing air of the ice generator. This prompts a drop in the temperature of the coolant.
This coolant courses inside the ice generator and soaks heat energy (heat stream from the heater to the colder area) from the water as it gets once again to the blower, Thus prompting cooling of water and development of ice.
PLSSS HELP WITH THIS ASAP
Answer:
the property of air shown in the figure describe A.mass
A salt is not composed of:
A. a metallic cation
B. non-metallic anion
C. an anion of a base
D. an anion of an acid
Answer:
B: non metalic anion if you try chemistry up salt is non metalic with metal things...
Explanation:
Does this help?
Describe how nucleic acid basis pair up
The rules of base pairing (or nucleotide pairing) are: A with T: the purine adenine (A) always pairs with the pyrimidine thymine (T) C with G: the pyrimidine cytosine (C) always pairs with the purine guanine (G)
The nucleotides in a base pair are complementary which means their shape allows them to bond together with hydrogen bonds. The A-T pair forms two hydrogen bonds. The C-G pair forms three. The hydrogen bonding between complementary bases holds the two strands of DNA together.
What type of reaction occurs when one element or ion within a compound is exchanged with another element or ion?
combustion
decomposition
single-displacement
double-displacement
Answer:
When an element replaces another in aone element or ion within a compound is exchanged with another element or ion , the reaction is called
single-displacementIodine is prepared both in the laboratory and commercially by adding Cl2(g) to an aqueous solution containing sodium iodide. 2NaI(aq)+Cl2(g)⟶I2(s)+2NaCl(aq) How many grams of sodium iodide, NaI, must be used to produce 87.9 g of iodine, I2?
Answer:
[tex]m_{NaI}=104gNaI[/tex]
Explanation:
Hello there!
In this case, given the balanced chemical reaction, it is possible to evidence that the mole ratio of sodium iodide to iodine is 2:1 and the molar masses are 149.89 and 253.81 g/mol respectively; in such a way, we write the following stoichiometric setup in order to obtain the required grams of sodium iodide:
[tex]m_{NaI}=87.9gI_2*\frac{1molI_2}{253.81gI_2}*\frac{2molNaI}{1molI_2}*\frac{149.89gNaI}{1molNaI} \\\\m_{NaI}=104gNaI[/tex]
Regards!
1.0 moles of an ideal gas are held in a container under 2.0 atm of pressure and 310 K. What must be the volume of this container?
Answer:
12.7 L (3 s.f.)
Explanation:
Since it is an ideal gas, we can apply the ideal gas law:
[tex]\boxed{pV=nRT}[/tex]
☆ where p= pressure
V= volume
n= number of moles
R= ideal gas constant
T= temperature
Substitute all the given information into the formula:
2V= 1(0.08206)(310)
2V= 25.4386
V= 25.4386 ÷2
V= 12.7 L (3 s.f.)
Further explanation:
The ideal gas constant, R, has different values depending on what units are being used. Two examples are listed below:
[tex]• \: 0.08206 \: L \: atm ^{ - 1} \: mol \: K[/tex]
[tex]• \: 8.314 \: J \: {mol}^{ - 1} \: {K}^{ - 1} [/tex]
In the above question, we use the value 0.08206 because the pressure was given in atm and the temperature was given in Kelvin. Thus, the unit used for volume is L.
Answer: 12.7 L
Explanation:
P=2.0atm
V= ???
n=1.0 mol
R= 0.0821
T= 310K
PV=nRT--> (2)V=(1)(0.0821)(310)
V=12.7 L
calculate the ph of the solution [oh-] = 1x 10-11 m
a. 11.0
b. 12.0
c. 2.7
d. 3.0
Answer:
d. 3.0
Explanation:
First we calculate the pOH of the solution, using the following formula:
pOH = -log[OH⁻]pOH = -log[1x10⁻¹¹ M]pOH = 11.0Using the pOH we can calculate the pH of the solution, keeping in mind the relationship between pH and pOH:
pH = 14.0 - pOHpH = 14.0 - 11.0pH = 3.0The answer is option d.
Write the formulas for the following compounds :
Sodium phosphate
Phosphorus triiodide
Explanation:
1.Na3PO4
2.PI3
therefore this is the formula for sodium phosphate and phosphrous triiodide
what is the major role of wind on earth?
Answer: Wind, in climatology, the movement of air relative to the surface of the Earth. Winds play a significant role in determining and controlling climate and weather.
positivities and negativity of computer creativity
answerrr BRAINLIEST PLS FAST
Explanation:
Some of the positive effects are faster communication, an organization of data and information, computerization of tasks, and easier access to the information. Some of the negative effects of computers are human's break their social interact with friends and families, cause back problem, depression, and poor health.Answer:
Creativity is a phenomenon whereby something somehow new and somehow valuable is formed. The created item may be intangible (such as an idea, a scientific theory, a musical composition, or a joke) or a physical object (such as an invention, a printed literary work, or a painting).
Scholarly interest in creativity is found in a number of disciplines, primarily psychology, business studies, and cognitive science, but also education, the humanities, technology, engineering, philosophy (particularly philosophy of science), theology, sociology, linguistics, the arts, economics, and mathematics, covering the relations between creativity and general intelligence, personality type, mental and neural processes, mental health, or artificial intelligence; the potential for fostering creativity through education and training; the fostering of creativity for national economic benefit, and the application of creative resources to improve the effectiveness of teaching and learning.

A picture of a lightbulb is associated with someone having an idea, an example of creativity.
Help help please help help!!
Answer:
I believe the answer is numbers
Cu1+ and O2- what is the formula and what is the name of it
Answer:
copper I oxide
Explanation:
Copper is known to form two oxides; copper I oxide and copper II oxide.
In the question we have the ions; Cu1+ and O2-. Ionic compounds are formed by a combination of ions as typified below;
Cu^+ + O^2- -------> Cu2O
This compound is copper I oxide
How is entropy related to the spontaneity of a reaction? AP3X
Answer:
S>0 contributes to spontaneity.
Explanation:
i just took the test on a pex :)
According to the law of thermodynamics, the relationship between entropy and the spontaneity of a reaction is S > 0.
What is entropy?Entropy is the total amount of energy in a closed system that is present there, but there are no uses for that energy. It is the unused energy for any work.
By the second law of thermodynamics, any spontaneous process results in an increase in the universe's overall entropy. The total of the entropy produced by the spontaneous process and the change in energy brought on by the heat flow is known as the net change in entropy of the system or S.
The reaction will be spontaneous if the delta G is negative. Delta G is the Gibbs free energy. So the entropy S will be greater that the reaction.
The Gibbs free energy equation is:
△G = △H − T△S
Thus, the relation is S > 0.
To learn more about entropy, refer to the link:
https://brainly.com/question/13386678
#SPJ2
Helllpppp I will give you branliest!!! In which cell organelle is DNA found?
Answer:
nucleus
Explanation:
Answer:
Found in the nucleus
Explanation:
I hope this answer is correct and helpful!
1. What is the new volume of a sample of neon if 5.23 L of the gas, which was originally at 214 mmHg, is compressed until the pressure increases to 796 mmHg?
2. When a balloon containing 635 mL of air is taken from sea level (at standard pressure) to a higher altitude, the balloon expands to 829 mL. What is the air pressure at this new altitude (in atm)?
3. A 465 mL sample of gas at 55°C is cooled to standard temperature (0°C). What is its new volume?
4. To what Celsius temperature does 750. mL of gas originally at −12°C need to be heated to bring the volume to 2.10 L?
5. The pressure in a car tire is 217 kPa at 24°C. After being driven on a hot summer day, the pressure in the tire increases to 258 kPa. What is the Celsius temperature of the air in the tire?
6. A gas sample originally at −39°C is heated to standard temperature (0°C), at which point its pressure is measured to be 808 mmHg. What was the original pressure of the gas?
7. A 400. mL sample of gas at 15°C and 113 kPa is heated to 227°C while expanding into a 900. mL container. What is the new pressure of the gas in kPa?
8. 2.50 g of CO2 gas is confined in a rigid cylinder at a pressure of 4.65 atm. If 0.42 g of gas is released from the cylinder, what is the new pressure?
Please help I'm so bad at chemistry
Here are attached photos, I don’t think they ar links, lmk if they don’t work
in the answering section it didn’t show me the full question so I only saw a little of question 5. Hopefully you get the idea of how to identify which equations to use tho! Good luck!
The Lewis diagram for AlF3 is:
:F:
The electron-pair geometry around the Al atom in AlF3 is
There is/are
lone pair(s) around the central atom, so the geometry of AlF3 is
Submit Answer
Retry Entire Group
9 more group attempts remaining
Answer:
25,000 pairs
Explanation: