Answer:
homeostasis•the maintenance of a stable internal environment
Hope this helps :)
The sodium atom loses an electron to form a sodium Ion (Na+). Which statement is correct with respect to its atomic radius?
O A. The sodium ion has a larger radius than the atom.
OB.
The sodium lon has a smaller radius than the atom.
OC.
The sodium ion and the sodium atom radil are the same size.
OD
The sodium ion has twice the radius of the sodium atom.
Answer:
sodium ion has smaller radius than a atom.
Explanation:
Plz answer these questions :
Answer: 2) see below
3) 2AgCl → 2Ag + Cl₂
Explanation:
2)
Step 1: Crushing & Grinding CuFeS₂(s)→ CuFeS₂(s)
Step 2: Froth Flotation CuFeS₂(s)----> CuFeS₂ (l)
Step 3: Roasting 2CuFeS₂(l) + 3O₂(g) → 2FeO(s) + 2CuS(s) + 2SO₂(g)
Step 4: Converting matte to blister Cu₂S(l) + O₂(g) → 2Cu(l) + SO₂(g)
Step 5: Anode Casting Cu(l) → Cu(s)
Step 6: Electrolytic Refining Cu(s) → Cu(s)
Anode: Cu(s) → Cu₂ + (aq) + 2e-
Cathode: Cu2 + (aq) + 2e- → Cu(s)
see diagram below for illustration of steps
3) When silver chloride (solid) is exposed to sunlight, it decomposes into silver (solid) and chlorine (gas).
The equation is written as: [tex]2AgCl_{(s)}\xrightarrow{\text{sunlight}}}2Ag_{(s)}+Cl_{2(g)}[/tex]
Red dye can be made from a mixture of yellow dye and magenta (a deep purplish red) dye. How could you determine if a particular red dye is made from a single dye or from a mixture of yellow and magenta dyes?
Answer:
When preforming the experiment the red dye will separate if it had other dyes included in it
Explanation:
Paper chromatography is a good way of separating coloured substances mixed together in a solution. During chromatography, the solvent soaks up the paper past the spot of the mixture and the different substances move upwards too. They move different distances depending on what kind of substance they are, what the solvent is and how far the solvent itself travels.
Which part of an atom is mostly empty space? nucleus proton cloud electron cloud neutron
Answer:
its C
Explanation:
Cloud electron is a part of an atom is mostly empty space. Hence option D is correct.
What is atom?It is the smallest unit of matter that possess the properties of the chemical element. It can’t be an independently, they form ions and molecules they both are combine and form large numbers of matters.
Every solid, liquid, gas, and plasma are composed of neutral or ionized atoms.
Atoms are basically three types: Neutrons, protons and electrons. In atoms there are two regions:
The nucleus (with protons and neutrons)Positive chargeElectron clouds: Most of the volume of an atom.
The region where the electrons can be found (mostly empty space). Cloud electron is a part of an atom is mostly empty space. Hence option D is correct.
Learn more about atoms, here:
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a. 165 lbs = ?? g
b. 12.01 cm = ?? m
Answer:
a) 74842.7 g
b) 0.1201 m
Explanation:
1 pound is 453.592 g
165 pound = 74842.7 g
12.01 / 100 = 0.1201 m
PLEASE HELP
You have four water samples at different temperatures. In which sample are the molecules vibrating at the fastest speed?
O A. water at 37°C
O
B. water at 99°C
C. water at 99°F
OD. water at 299K
2. Briefly describe how the law of conservation of mass was developed.
Answer:
History of the Law of the Conservation of Mass
The ancient Greeks first proposed the idea that the total amount of matter in the universe is constant.This law states that, despite chemical reactions or physical transformations, mass is conserved that is, it cannot be created or destroyed within an isolated system.
Explanation:
A neutral atom has an equal number of positive and negative charges. If a neutral fluorine atom has 9 protons and 10 neutrons, how many electrons will it have?
Answer:
9 electrons.
Explanation:
Number of electrons = number of protons
= 9.
PLZ HELP!! ILL MARK BRAINLIEST!! What claim do ghost hunters make about energy-detecting devices? They can determine how many spirits are in one location. They can produce sounds that may be confused with ghosts. They can sense the presence of spiritual energy. They can distinguish good spirits from evil spirits.
Answer:
[See Below]
Explanation:
I mean they say all those things , but if it has to do with just the device I'm guessing it'd most likely be They can sense the presence of spiritual energy since they claim it's the device they are using to tell them if there is something there they can't see.
Answer:
The Awnser is C (pls give me brainliest if this awnser is correct)
Explanation:
Consider the development of atomic theory. The last piece of the atomic puzzle was the discovery of
A)
electrons in orbitals.
B)
the neutron in the nucleus.
C)
a dense, centrally located nucleus.
D)
the location of the electron cannot be determined.
Answer:
The answer will be B
Explanation:
Answer:
B.the neutron in the nucleus
Explanation:
Write the number in scientific nation form
Answer:
its already in scientific notation form however its ordinary or real form is -0.005682
Explanation:
scientific notation
when a number is expressed with some power of 10 multiplied by a number between 1 to 10 is called scientific notation
What is the solution for x in the equation? -3x + 7x − 8 = 34 + 9x − 2
Answer:-8
Explanation:
edmentum
The solution for the given linear equation can be solved by simplifying the equation. The value of x is obtained as - 8.
What is linear equations?Linear equations are the equations which shows a linearity with a second expression which is similar to the first but having different mathematical operations and signs.
By solving linear equations we can solve for the unknown value of x. The value of x can be obtained by taking the whole expression to one side and which is having a constant value.
Given, - 3x + 7x - 8 = 34 + 9x -2.
= 4x - 8 = 32 + 9x
= 4x - 8 - 9x = 32
-5x = 40
x = - 40/5 = - 8.
Hence, solution of the given equation is -8.
To find more on linear equations, refer here:
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Calculate the cell potential, Ecell, of a concentration cell containing a 0.1 M solution of Zn2 and a 1.0 M solution of Zn2
Answer:
The cell potential is 0.0296V
Explanation:
Please see the attachment below
which should I choose?
Answer:
liquid
Explanation:
thank me
Is one unlit match an example of a physical or chemical change, or a physical or chemical property?
I believe it’s physical property because there is no chemical reaction to an unlit match♀️
A sample of iron shot is added to a graduated cylinder containing 47.5 mL of water. The water level rises to the 51.1 mL mark. The density of iron is 7.87 g/mL. From this information, calculate the mass of the sample. *
Answer:
The mass of iron shot is 28.3 grams.
Explanation:
Given that the initial volume of water is 47.5 mL and final volume of water containing iron shot is 51.1mL. First, you have to find the volume of iron shot by subtracting :
[tex]47.5 + iron \: shot = 51.1[/tex]
[tex]iron \: shot = 51.1 - 47.5[/tex]
[tex]iron \: shot = 3.6ml[/tex]
Next, we have to apply density formula, D = mass/volume :
[tex]d = \frac{m}{v} [/tex]
[tex]let \: d = 7.87,v = 3.6[/tex]
[tex]7.87 = \frac{m}{3.6} [/tex]
[tex]m = 7.87 \times 3.6[/tex]
[tex]m = 28.3g \: (3sf)[/tex]
You want to place a piece of glass tubing into a ruber stopper after the tubing has been fire polished and cooled. This is best done by
Answer:
All of the above
Explanation:
This is correct
Which of the following is a compound?
Select the correct answer below:
Water
Sodium
Chlorine
Oxygen
water
explanation:
water consists one oxygen atoms and two hidrogen of atom.
compound: have two or more atom
Hope this helps :)
A student wants to see how temperature affects the
production of gases when yeast and water are mixed. She
mixes them at different temperatures in clean soda
bottles. She then places a balloon over the top of each
bottle.
Which statement best describes the use of the balloons in this experiment?
Answer:
To monitor Pressure increase
Explanation:
the more pressure, the higher the production of the gas, which can be recorded, more pressure meaning higher production. Then vary the temperature.
Answer: Logical, Because it allows the student to catch any invisible gases given off. I hope this helps
Explanation:
What is the formula for 2-methylnonane
Answer:
C10H22
sorry if im wrong
HIFT|d/c/ 113 r 12
a b/c 9.416666667
ard Deviation SD (MODE 2
Data: 20X5, 30X4, 40, 10X6
ALPHA SC SC1
20 ALPHA 5 DATA 3
[1] 6][ALPHA
SHIFT
3 a b/d 40
9r5r 12
10 aim
160 mt at
and
helium
5. sample 07
25 degree
occupies
volume
volume of
it occupy 17
the
IS
will
dear
pressure
degree celsius. What
eased
to
8 atm
at
constant
temperature?
Answer:
hey guys are doing. . I have been in business for a new job and I will be a great time , and I will be a good timeExplanation:
for me, but the best. . the first one. . the first one
10. This is a neutral atom. What is this element
Answer:
I guess carbon
Explanation:
HELP!!! What two volume units have the same value?
Answer:
1milliliter=1cubic centimeter
Answer:
volume and density I'm pretty sure
10g sugar is dissolved in 90g water.The density of the solution is 1.09g/ml.Calculate mass/volume percentage concentration of the solution.
What is the mass number of an atom with 17 protons, 17 electrons, and 20 neutrons?
at 100c the vapour pressure of a solution of 6.5g of solute in 100g of water is 732mm if kb is 0.52 k/m the boiling point of solution will be
Answer:101.105⁰c
Explanation:
Which of the following are common behaviors of scientists? a.doing background research b. testing ideas with experiments c. analyzing data from tests d. reporting results to others e. all of the above
Answer:
Explanation: It is B. all above
A chemistry student must write down in her lab notebook the concentration of a solution of sodium hydroxide. The concentration of a solution equals the mass of what's dissolved divided by the total volume of the solution. Here's how the student prepared the solution: The label on the graduated cylinder says: empty weight: She put some solid sodium hydroxide into the graduated cylinder and weighed it. With the sodium hydroxide added, the cylinder weighed . She added water to the graduated cylinder and dissolved the sodium hydroxide completely. Then she read the total volume of the solution from the markings on the graduated cylinder. The total volume of the solution was . What concentration should the student write down in her lab notebook? Be sure your answer has the correct number of significant digits.
Answer:
1.099 gmL¯¹ ≈ 1.1 gmL¯¹
Explanation:
From the question given above, the following were obtained:
Mass of empty cylinder = 9.5 g
Mass Cylinder + NaOH = 31.92 g
Volume of solution = 20.4 mL
Concentration of solution =?
Next, we shall determine the mass of sodium hydroxide, NaOH. This can be obtained as as illustrated below:
Mass of empty cylinder = 9.5 g
Mass Cylinder + NaOH = 31.92 g
Mass of NaOH =?
Mass of NaOH = (Mass Cylinder + NaOH) – (Mass of empty cylinder)
Mass of NaOH = 31.92 – 9.5
Mass of NaOH = 22.42 g
Finally, we shall determine concentration of the solution as follow:
Mass of NaOH = 22.42 g
Volume of solution = 20.4 mL
Concentration of solution =?
Concentration = mass /volume
Concentration of solution = 22.42 / 20.4
Concentration of solution = 1.099 gmL¯¹ ≈ 1.1 gmL¯¹
Therefore, the concentration of the solution is 1.1 gmL¯¹
Currents shape rivers over long periods of time.
Please select the best answer from the choices provided
True
False
Answer:
True
Explanation:
Most rivers begins life as a tiny stream running down a mountain slope..... small streams meet and join together, growing larger and larger until the flow can be called river. On its way down, the water shapes the landscape by wearing away rocks and carving out a network of valley.
Is the following statement a fact,, opinion, or theory? Why?
Scrambled eggs are better for breakfast than cereal. I can stay full longer if I eat eggs.
Answer:
i think opinion cause you could be saying in my opinion, scrambled eggs are better for breakfast than cereal.