Answer:
2.57 moles of carbon
Explanation:
1 mole = 6.023x10^23 (this is called avogadro's number)
1/6.023x10^23
1.55x10^24 = 1.55x10^24/6.023x10^23 = 2.57 moles
this means, 1.55x10^24 atom contains 2.57 moles of carbon
Which sentences describe decomposers in a food chain?
They are the final link in the energy flow in a food chain or a food web. They are fungi and animals that feed on dead organic matter. Plants
produce food or energy from raw materials. Plants are also known as autotrophs because they can produce organic compounds from inorganic
chemicals. Bacteria, fungi, worms, and snails recycle the garbage of dead matter and give back nutrients into the ecosystem.
Answer:
hey are the final link in the energy flow in a food chain or a food web. They are fungi and animals that feed on dead organic mattet.
Explanaticuz im naruto uzamaki
Take your time please.
Answer:
1.) Eyewash station --> D
2.) Absorbent material --> G
3.) Fire extinguisher --> F
4.) Safety Shower --> E
5.) Biohazard container --> J
6.) Broken glass container --> I
7.) Safety goggles --> C
8.) Lab apron --> H
9.) asbestos gloves --> A
10.) Latex gloves --> B
Explanation:
In an equipped laboratory, alot of safety equipments are made available and kept in area that it could be easily accessed in the laboratory. Safety or protective equipments are those materials that helps protect a laboratory personnel while at work on the lab.
These equipments include:
--> Eyewash station: This is an equipment used in the laboratory during emergency to rinse chemical from the eye. Therefore option D is correct.
--> Absorbent material: They are used to contain small spills in the laboratory. Therefore option G is correct.
--> Fire extinguisher: This equipment is used to put out small fires. Therefore F is correct.
--> Safety Shower: This is used to rinse away chemical from clothes and on skin during emergency. Therefore option E is correct.
--> Biohazard container: This container is used to safely dispose bacteria culture, blood and other living tissues. Therefore option J is correct.
--> Broken glass container: This is used to dispose cracked, chipped or broken bottle in the laboratory. Therefore option I is correct.
--> Safety goggles: This helps to protect the eye from chemical and broken glasses. Therefore option C is correct.
--> Lab apron: This is worn by the laboratory personnel to help protect the skin from chemical and biohazards. Therefore option H is correct.
--> Asbestos gloves: these are heat resistant gloves used to protect the hands from heat. Therefore option A is correct.
--> Latex gloves: these are equally worn by the laboratory personnel to protect the hands from chemicals and biohazards
[tex]Answer :—✔[/tex]
THE OTHER PERSON GAVE THE CORRECT ANSWER3- Write the chemical formula of Alanine and find to which food category it belongs.
Answer:
C3H7NO2
Explanation:
The chemical formula of Alanine is C3H7NO2 and it belongs to almost all food category because it is present in one food of each food category such as dairy products, meat, nuts, soy, and whole grains etc. Alanine is a nonessential amino acid means that it does not directly obtained from the diet but it can be produced by the body using raw materials present in the food.
Which characteristic is a property of water
21.Total mass of reactants always equals the total mass of the products true or false
Answer:
True
Explanation:
because its the law of conservation of mass
If it takes 75.0 mL of 1.5 M HNO3 solution to completely neutralize 125 mL of Ca(OH)2, what is the concentration of the Ca(OH)2 solution?
Answer:
0.45 M
Explanation:
The reaction that takes place is:
2HNO₃ + Ca(OH)₂ → Ca(NO₃)₂ + 2H₂OFirst we calculate how many HNO₃ moles reacted, using the given concentration and volume:
75.0 mL * 1.5 M = 112.5 mmol HNO₃Then we convert HNO₃ moles into Ca(OH)₂ moles, using the stoichiometric coefficients:
112.5 mmol HNO₃ * [tex]\frac{1mmolCa(OH)_2}{2mmolHNO_3}[/tex] = 56.25 mmol Ca(OH)₂Finally we calculate the concentration of the Ca(OH)₂ solution:
56.25 mmol Ca(OH)₂ / 125 mL = 0.45 M1. What is the relationship between a DNA molecule, a gene and a protein?
Explanation:
for example, one gene will code for the protein insulin, which is important role in helping your body to control the amount of sugar in your blood. Genes are the basic unit of genetics. Human beings have 20,000 to 25,000 genes.
How could a solid result from the mixing of two liquids?
Answer:
Combining the two clear colorless liquids is a chemical change because a different solid substance is formed. Tell students that a precipitate is an insoluble solid that forms when two solutions are combined and react chemically. Insoluble means that the solid will not dissolve.
Explanation:
do you think hunter-gatherers are still around today? what makes you think that?
Answer:
yes
Explanation:
some cultures in Tanzania are still follow the old ways
You add 0.300 moles of an acid to enough water to get a total of 0.500 liters of solution. Your molar concentration is?
how many lone pairs are on the central atom in GeH4?
most bones are connected at Joints by
Answer:
Los huesos se mantienen unidos a otros huesos a través de unas largas tiras fibrosas llamadas ligamentos. El cartílago, una sustancia flexible y elástica que contienen las articulaciones, sujeta los huesos y los protege en los puntos donde varios huesos friccionan entre sí.
50 POINTS!! PLZ HELP! SCIENCE QUESTION!
Answer:
C im pretty sure
Explanation:
Because it is facing the opposite direction with opposite colors.
The elements least likely to form bonds are found in which group?
15
16
ОО
17
18
Answer:
Group 18
Explanation:
As the earth heats up, the atmosphere is warmed by this longer-wave energy
Answer:
Hello
Once in the Earth's atmosphere, clouds and the surface absorb the solar energy. The ground heats up and re-emits energy as longwave radiation in the form of infrared rays.
Explanation:
thanks
As the earth heats up, the atmosphere is warmed by long-wave infrared radiation. Thermal energy is released by the earth.
What is the atmosphere?An atmosphere surrounding the earth and the place where all living and non-living things live together. The atmosphere keeps all objects safe and cover-up, and it also gives a covering from the outer rays and gases that can be harmful to biotic and abiotic factors.
The sun's rays come to the earth and increase the temperature of the earth, these rays reflect back to the atmosphere but are trapped, and this increase the warmth of the earth.
These rays are long wave infrared radiation and thermal energy is the energy that is heat energy and produces warmth
Thus, the atmosphere is warmed by long-wave infrared radiation.
To learn more about the earth, refer to the below link:
https://brainly.com/question/2653647
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Why is the law of conservation of mass law and not a theory?
Answer:
In physics and chemistry, the law of conservation of mass or principle of mass conservation states that for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as the system's mass cannot change, so quantity can neither be added nor be removed.
Explanation:
That is what I think on the subject
A law is more specific, such as this particular description of matter, whereas a theory can be more general and often includes more of a why. Atomic Theory explains why the law of conservation of matter exists; in chemical reactions, atoms simply rearrange and have the same mass before and after.
What is a theory?A theory is a well-thought-out elaboration for natural-world anecdotes that has been built using the methodological approach and incorporates many facts and hypotheses.
A scientific law, in overall, is a description of an observed phenomenon. It does not explain why or what causes the phenomenon.
A scientific theory is an explanation for a concept. It is a common misconception that with enough research, theories can become laws.
A law is more precise, such as this detailed definition of matter, whereas a theory is more general and frequently includes more of a why.
Atomic Theory explains why the law of conservation of matter exists; atoms simply rearrange and have the same mass before and after chemical reactions.
Thus, that's why, the law of conservation of mass law and not a theory.
For more details regarding law of conservation of mass, visit:
https://brainly.com/question/13383562
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PLEASE HELP! How does one determine how much of a molecule is produced in a reaction?
A. The mass of the products is determined by adding the mass of the
reactants.
B. Oxidation states are used to calculate the number of product
molecules.
C. The coefficients and molar masses are used to calculate amounts
of molecules.
D. The molar masses of the molecules tell how many grams of
product will form.
In the reaction, 2H2(g) + O2(g)
which the reactants appear is:
2H2O(1), the phase of matter in
a) solid.
b) liquid.
c) gas.
d) plasma.
Answer:
b liquid
Explanation:
2H
2
(g)+O
2
(g)⟶2H
2
O(l) is the correction reaction as during formation of water both hydrogen and oxygen are in gaseous form and produces water in liquid form.
chemical energy comes from...
1. chemical change
2. physical change
Answer:
1
Explanation:
Physical change does not cause chemical energy.
How much Oxygen would be required to react with 101 g of Methane?
A.101 g
B.202 g
C.303 g
D.404 g
Answer:
404g
Explanation:
Which the following classes of compound is an example of acarbonyl compound
Answer:
b) carboxylic acid
Explanation:
Why is ocean water near the equator warmer than ocean water at the poles?
O A. The sun's rays strike the water more directly near the equator.
O B. Deep sea vents pump steam into the conveyor belt near the
equator.
O C. The water is denser and saltier near the equator, so it holds more
heat.
D. Due to Earth's rotation, gyres near the equator flow clockwise.
SUBM
What is the molarity of a solution that contains 2.14 moles (CH3)2SO in 2.00 L solution?
1.07 M
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightChemistry
Atomic Structure
Molarity = moles of solute / liters of solutionExplanation:Step 1: Define
[Given] 2.14 moles (CH₃)₂SO
[Given] 2.00 L
[Solve] Molarity
Step 2: Solve
Substitute in variables [Molarity]: x M = 2.14 moles (CH₃)₂SO / 2.00 L solution[Molarity] Divide: x = 1.07 MDuring the intrusion of the Palisades Sill, contact metamorphism changed sandstone and shale into?
a) diorite
b) marble
c) limestone
d) hornfels
Answer:
i believe it's c but I'm not one hundred percent sure
Explanation:
Fill in the blanks to complete each statement about the heating of Earth's surface
Earth takes in thermal energy from the Sun in a process called blank.
Sunlight strikes Earth's surface at different angles. This angle is called the angle of blank
Answer: Absorption and insolation
Explanation:
Answer:
what the person above said
4 NH3 +5 02 +4NO + 6H2O
When 70.25 grams of NH3 react, how many moles of H20 are produced?
Answer:
6.19 mol H₂O
Explanation:
4 NH₃ + 5O₂ → 4NO + 6H₂OFirst, we convert 70.25 grams of NH₃ into moles, using its molar mass:
70.25 g ÷ 17 g/mol = 4.13 mol NH₃Then we convert 4.13 moles of NH₃ into moles of H₂O, using the stoichiometric coefficients of the balanced reaction:
4.13 mol NH₃ * [tex]\frac{6molH_2O}{4molNH_3}[/tex] = 6.19 mol H₂OFormula for diphosphorus decoxide ? And explain
Answer:
It can be represented using the chemical formula P 20 5.It has a molecular weight of 141.945 grams per mole and its density is about 2.39 G/cm 3.It can also be termed as Diphosphorus Pentoxide, Phosphorus(V) Oxide,
Phosphoric Anhydride, Tetraphosphorus Decaoxide, Tetraphosphorus Decoxide.
102.5 MHz (typical frequency for FM radio broadcasting) in joules
Answer:
6.80×10¯²⁶ J
Explanation:
From the question given above, the following data were obtained:
Frequency (f) = 102.5 MHz
Energy (E) =?
Next, we shall convert 102.5 MHz to Hz. This can be obtained as follow:
1 MHz = 10⁶ Hz
Therefore,
102.5 MHz = 102.5 MHz × 10⁶ Hz / 1 MHz
102.5 MHz = 1.025×10⁸ Hz
Finally, we shall determine the energy. This can be obtained as follow:
Frequency (f) = 1.025×10⁸ Hz
Planck's constant (h) = 6.63×10¯³⁴ Js
Energy (E) =?
E = hf
E = 1.025×10⁸ × 6.63×10¯³⁴
E = 6.80×10¯²⁶ J
An earthquake creates a type of wave that shakes the ground. If a large earthquake occurs in Greece, how can the waves be felt across the sea in Italy?
A.
Waves can be transformed into strong winds that travel across the sea.
B.
Waves do not travel through water, but they can crash the sea into land far away.
C.
Waves can cause a series of earthquakes around the world.
D.
Waves can travel through different media including solid land and water.
A student performed a similar experiment we have done, with Ag and O to produce silver oxide.
Mass of crucible and lid: 29.307 g
Mass of crucible, lid, and silver: 30.958 g
Mass of crucible, lid, and silver oxide: 31.080 g
Use the above data to calculate the moles of the metal used in this experiment. your answer must include correct significant figures and unit.
Answer:
0.0153 mol
Explanation:
Mass of crucible and lid: 29.307 g
Mass of crucible, lid, and silver: 30.958 g
Number of moles = Mass /Molar mass
Mass of Silver = Mass of crucible, lid, and silver - Mass of crucible and lid
Mass of siilver = 30.958 g - 29.307 g
Mass of silver = 1.651 g
Molar mass of silver = 107.868 g/mol
Number of moles = 1.651 g / 107.868 g/mol
Number of moles = 0.0153 mol