The molarity of 8 grams of an aqueous solution of sodium hydroxide in 2 liters of solution is what?
Answer: 0.125
Explanation:
8g divided by 39.997. Then divide that answer by 2.
Answer:
0.1 M
Explanation:
Express the answer to each of the following calculations with the correct number of
significant figures.
a) 3.42 + 8.132
b) 4.9 + 3.822
c) 17.8 + 12.115 d) 4.55 + 3.45
e) 1.966 + 3.4422
f) 3.882 – 2.1
g) 4.894 - 2.03
h) 15.6600 - 12.838
i) 11.22 - 8.8
j)133-20
Answer:
a)11.552
b)8.722
c)29.915
d)8
e)5.4082
f)1.782
g)2.864
h)2.822
i)2.42
j)113
The correct number of significant figures are a.5 b.4 c.5 d.1 e.5 f.4 g.4 h.5 i.3 j.3 for all the calculations.
what are significant figures?Significant figures or digits are the minimum numbers from zero to nine which are used for the report of results that are uncertain and decimal is not a significant figue and starting zeros too.
the total number of significant figures are,
a) 3.42 + 8.132 =11.732 = 5 significant figures.
b) 4.9 + 3.822 = 8.722 = 4 significant figures.
c) 17.8 + 12.115 = 29.915 = 5 significant figures.
d) 4.55 + 3.45 = 8 = 1 significant figures.
e) 1.966 + 3.4422 = 5.4082 = 5 significant figures.
f) 3.882 – 2.1 = 1.722 = 4 significant figures.
g) 4.894 - 2.03 = 2.866 = 4 significant figures.
h) 15.6600 - 12.838 = 2.8262 = 5 significant figures.
i) 11.22 - 8.8 = 2.42 = 3 significant figures.
j)133-20 = 113 = 3 significant figures
Therefore, The correct number of significant figures are a.5 b.4 c.5 d.1 e.5 f.4 g.4 h.5 i.3 j.3 for all the calculations.
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Which item has the most thermal energy?
Convert the following number into scientific notation: 88,000,000.
A 8.8 x 10⁶
B. 88 x 10⁴
C 8.8 x10⁷
D. 8.8 x 10-⁷
what element can scratch a diomand?
Answer:
another diamond ....theres nothing else that can that I know of.
How can environmental pollution occur when using cosmetics that contain environmental pollution?
Can the normal usual cosmetics products make nature harmed and affect climate changes as well?
Answer:
When cosmetics companies use chemicals to make their products, they could dump their waste into rivers and oceans, causing water pollution to occur. The wildlife that lives in these habitats will probably die from them, causing some species to die out and become extinct.
Explanation:
Also, greenhouse gases could be released into the atmosphere, which would cause global warming.
Plants use sunlight as energy to convert carbon dioxide and water into glucose and oxygen. Which best describes the
reaction?
O The law of conservation of mass indicates the same amount of carbon will be found in the reactants as in the
products.
O The law of conservation of energy indicates the same amount of carbon will be found in the reactants as in the
products,
The law of conservation of mass indicates the same amount of glucose will be found in the reactants as in the
products.
The law of conservation of energy indicates the same amount of glucose will be found in the reactants as in the
products.
Answer:
A
Explanation:
Question:
Plants use sunlight as energy to convert carbon dioxide and water into glucose and oxygen. Which best describes the reaction?
Options:
The law of conservation of mass indicates the same amount of carbon will be found in the reactants as in the products. The law of conservation of energy indicates the same amount of carbon will be found in the reactants as in the products. The law of conservation of mass indicates the same amount of glucose will be found in the reactants as in the products. The law of conservation of energy indicates the same amount of glucose will be found in the reactants as in the products.Answer:
A.) The law of conservation of mass indicates the same amount of carbon will be found in the reactants as in the products.
Explanation:
I just did the test on edge 2020 and got it right!
electron configuration of P
how is dissolving different from melting
Answer:
Melting: one substance is involved and the liquid and solid are the same material.
To melt something heat is essential.
Dissolving: involves two materials;the resulting solution is a mixture of two substances.
The dissolved substance is still present in the solution even though it cannot be seen.
Explanation:
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in the universe what can mass be defined as
Answer: Mass is both a property of a physical body and a measure of its resistance to ... Inertial mass is the mass of an object measured by its resistance to acceleration. ... back to the fact that we have not really defined what a force is. ... Then we can measure the mass of any other object in the universe ...
If a car has a force of 490 N forward and encounters a backwards force of
180 N, what will the net force be?
State the Periodic Law. Why is it so important in the study of chemistry?
Answer:
Summary. To summarize, the periodic table is important because it is organized to provide a great deal of information about elements and how they relate to one another in one easy-to-use reference. The table can be used to predict the properties of elements, even those that have not yet been discovered.
What do you think is the difference between a scientific theory and law?
Answer:
A scientific theory predicts why something might happen and when more information goes into the theory it can better predict. But a law is something that no matter what will always be true.
Explanation:
My atomic number is 32. I am a-
Answer:
please mark brainliest!
Explanation:
Germanium is a chemical element with the symbol Ge and atomic number 32. It is a lustrous, hard-brittle, grayish-white metalloid in the carbon group, chemically similar to its group neighbours silicon and tin.
what happens when you add metal to carbonate
what does it mean when you hear science is tentative?
Answer/Explanation:
Tentative means that something is uncertain. So if some aspect of science is described as "tentative" it probably means that there is some evidence to support a hypothesis, but there is more work to be done to be sure about the statements being made.
You may also see these reports described as "preliminary", as they are acknowledging the work is not complete
how do birds fly in the south
Answer:
with there wings
Explanation:
birds have wings that flap up and down when they fly and this process repeats over and over
Each B atom is adjacent to 2 A atoms and 2 B atoms. What is the B-C-B angle ?
Answer:
120 degrees
Explanation:
The molecule has trigonal bipyramidal geometry. The angle between B molecules is 120 degrees. The angle between A and B molecules is 90 degrees.
The bond angle of B-C-B is equal to 120° as the given geometry of the molecule is trigonal bipyramidal.
What is the trigonal bipyramidal geometry?The trigonal bipyramid formation in chemistry is a molecular geometry in which one atom is at the center and 5 more atoms are at the corners molecular structure.
The bond angles of this geometry surrounding the central atom are not identical because there is no geometrical arrangement with five terminal atoms in equivalent positions. For example, this molecular geometry is PF₅, PCl₅ in the gas phase.
In PCl₅, the P atom shares a plane with three Cl atoms at 120° angles to each other in equatorial positions, and two more Cl atoms above and below the plane or at axial positions. An axial atom has three neighboring equatorial atoms at a 90° bond angle.
In the given figure, the B-C-B is present at the equatorial plane of the molecule. The angle between the bonds at the equatorial plane is 120°. Therefore, the angle of B-C-B is equal to 120°.
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Which of the following objects would require the use of a large-scale model A. An atom B. A car engine C. A frog's heart D. The Mississippi River
Answer:
A. An atom
Explanation:
A large scale model is one that is bigger than the object itself. These are needed to visualise structures and behaviours that we cannot normally see. A large scale model is needed for small objects, such as an atom. Larger objects do not need even bigger models
two types of tests you could perform to determine if a substance was a metal or nonmetal.
The easiest easy to find about metal is through the periodic table. Most of the ele,mtns are metals and the only exception is hydrogen which is nonmetal as it's in its gaseous state.
Hence about 75% of the elements are metals. Many metals ending has ium. Like lithium, titanium and non metals have endings with gen such as oxygen, hydrogen, and argon. Metals are ductile can be drawn into wire form. Metals have a luster that is they reflect Metals are good conductors of heat and electricity. Thus these are some of the methods to test.Learn more about the tests you could perform to determine if a substance was a metal or nonmetal.
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i neeeed helllllpppppsss
Answer:
1.0 g/cm3
Explanation:
yeah that's the density of water
Answer:
a 1 g/cm3
Explanation:
per google- A common unit of measurement for water's density is agram per milliliter (1 g/ml) or 1 gram per cubic centimeter (1 g/cm3)
Which is a compound?
A. smog
B. sea water
C. air
D. magnesium
E. salt
Answer:
The answer is D) Magnesium
Explanation:
Because smog is a mixture
sea water is a mixture
air is an element
And salt solvent
It can only be D
Barium phosphide Ba3P2 BaP Ba3PO4
Answer:
It A(Ba3P2)
Explanation:
I took the test
Answer:
It A(Ba3P2)
Explanation:
PLS HELP NOW!!
1. List the functions of the respiratory system. - [Answer]
2. Describe the path that a molecule of oxygen takes as it moves from the air into the alveoli. - (Answer)
3. Explain what happens to carbon dioxide in the blood that flows through the capillaries in the alveoli. - [Answer]
4. Why does air rush into your body when you inhale? - (Answer]
5. When there is a lot of dust in the air, people often cough and sneeze Fynliniul
Answer:
1:Gas Exchange – oxygen and carbon dioxide.
Breathing – movement of air.
Sound Production.
Olfactory Assistance – sense of smell.
Protection – from dust and microbes entering body through mucus production, cilia, and coughing.
Explanation:
I think I'm allergic to garlic powder. Tonight I am making pasta and will not use garlic powder this time. If I get itchy or not is what kind of variable?
Answer:
Explanation:
A garlic allergy is rare. If you're allergic to garlic, you can be allergic to cooked or raw garlic, or to all forms. A garlic allergy is caused when your body's immune system mistakenly identifies garlic as being harmful and produces antibodies in an attempt to fight it off. Does this help?
Answer
Dependent
Explanation:
You will react depending on the presence of garlic powder
To make a saturated solution, 30 g of sodium chloride is dissolved in 100 g of
water at 293 K. Find its concentration at this temperature.
Answer:
30%
Explanation:
As the formula for finding concentration
= (mass of solute/mass of solution)×100
= (30/100)×100
= 0.3×100
= 30%
The concentration is 30%.
How to find concentration?As the formula for finding concentration
= (mass of solute/mass of solution)×100
= (30/100)×100
= 0.3×100
= 30%
What is a concentration?
The amount of a substance, such as salt, is in a positive amount of tissue or liquid, along with blood. A substance turns into more concentrated whilst much less water is present.
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6.(a) State any two ways by which water gets polluted.
(b) Name the components present in water gas.
What is an ORGANELLE And put a sentence that supports it
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[tex]\boxed{-See\;Below-}[/tex]
___________________________________________________________
An organelle is any of a number of organized or specialized structures within a living cell.
|
Sentence \/
"There must be at least 100 organelles in this living cell!"
____________________________________________________________
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Which is one precaution to take when working with heat and fire?
Do not use during experiments.
Keep flammables away.
Avoid touching face and eyes.
Do not mix chemicals unless told to do so.
