Chemistry High School

For each of the following unbalanced equations indicate how many moles of the second reactant would be required to react exalt with 0.275 mole of the first reactant. Balance the equation.Co(s) + P4 (s) Co3P2 (s)

Answers

Answer 1

Answer:

0.183 mol

Explanation:

so balenced equation is 6Co+4P=2(Co3P2)

so so the ratio is 6:4

so .275/6*4

=0.183 mol I think

Answer 2

The Answer will be:  0.183 mol

 so that the balanced equation is 6Co+4P=2(Co3P2) When the ratio is 6:4

       so that .275/6*4

      =0.183 mol.

When According to the A balanced chemical is equation has been equal numbers of atoms that are for each element they are involved in the reaction and its represented on the reactant and its product sides.Also that This is a better requirement that makes the equation must be satisfied and also that to be consistent with the law of conservation of the matter. then It may occur that it is confirmed by simply summing the numbers of atoms and also molecules on it either side of the arrow and it's comparing these sums to ensure that they are equal.  

( 1 CO 2  molecule  ×  2 O atoms CO 2 molecule) + ( 2 H 2 O molecule  × 1 O atom H 2 Molecule  ) = 4 O atoms

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For Each Of The Following Unbalanced Equations Indicate How Many Moles Of The Second Reactant Would

Related Questions

The period of time needed for a radioisotope to lose one-half of its activity is known as that isotopes

Answers

Explanation:

The radioactive scattering technique is called radioactive degradation. For each radioactive isotope, the natural radioactive cycle is special and is determined by a period of time termed a half-life. One half-life was its time needed to experience radioactivity for half of both the radioactive nuclei.

What temperature kelvin would .97mol of gas be to occupy 26L at 751.2mmHg?

Answers

Answer: 322.56 Kelvin

Explanation:

Use the Ideal Gas Law

[tex]PV=nRT[/tex]

R is the gas constant

T is the temperature in Kelvins

P is the pressure in atmospheres

V is the volume in liters

n is the number of moles of gas

First, the mm of mercury need to be converted to atmospheres using the conversion factor 1atm = 760 torr.

[tex]751.2mmHg (torr) =0.988atm[/tex]

Now plug everything in

[tex](0.988)(26)=(0.97)(0.0821)T\\T=322.56K[/tex]

Your sick puppy is diagnosed with roundworms. They grow inside of the puppy. What type of symbiotic relationship do the puppy and the roundworms have?

A. Cooperative
B. Commensalism
C. Mutualism
D. parasitism

Answers

D. Parasitism , the roundworm benefits from the relationship, but the puppy is harmed

Which group in the food chain uses the energy of the sun to create its own food A consumers B predators C producers D prey

Answers

Answer:

C producers

Explanation:

All food chains start with energy from the sun. This energy is captured by plants. Thus the living part of a food chain always starts with plant life and ends with an animal. Plants are called producers because they are able to use light energy from the sun to produce food (sugar) from carbon dioxide and water.

please I'm not really sure.

Answers

Answer:

a pea!

Explanation:

Answer:

A pea

Explanation:

We already know a electron is smaller than a proton.

Calculate the pH if the pOH = 7.4
Round your answer to two decimal places.

Answers

i need points

Explanation:

pOH and pH add to 14.

Therefore 14 - pOH will give you the answer.

14 - 7.4 = 6.6

The pH is 6.6

Give the number of protons, electrons and neutrons in one atom of Carbon.

Answers

Answer:

6 protons, 6 neutrons, and 6 electrons.

Explanation:

Carbon has six neutrons
Carbon has six protons
Carbon has six elections
Hope that helped :D

fill in the blank
______ is a way to describe matter with numbers and units.

Answers

Measurements hope that helps :)

Measurement is a way to describe matter with numbers and units.

Measurement is a fundamental process used to describe and quantify various aspects of matter. It involves assigning numerical values to physical quantities and expressing them using appropriate units of measurement.

In scientific and everyday contexts, measurements provide a standardized and consistent way to communicate information about the properties, dimensions, quantities, and characteristics of objects, substances, or phenomena. By using measurements, we can describe the size, length, mass, volume, temperature, time, and many other attributes of matter.

The process of measurement typically involves two components: a numerical value and a unit. The numerical value represents the magnitude or quantity being measured, while the unit provides the reference or scale by which that quantity is expressed. Units help provide meaning, context, and comparability to measurements.

Hence, measurement provides a quantitative and objective way to describe matter, allowing us to understand and interact with the physical world in a systematic and meaningful manner.

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#SPJ 4

3) What are the three types of sedimentary rocks?

Answers

Answer:

clastic, organic, and chemical

What is specific heat?

Answers

The specific heat is the amount of heat per unit mass required to raise the temperature by one degree Celsius.

Specific heat is the amount, like the other brainly answer said, of heat per unit mass required.

I NEED HELP WIT QUESTION THREE

Answers

Answer: 2.00

Explanation:

2 rounded to the nearest hundredth is 2.00

your welcome :)

answers for all three:

1. 4.00

2. 16.04

3. 2.00

if a piece of aluminum has a density of 2.7g/cm^3. the mass of 5.2g,what is the volume

Answers

Answer:

Gold has a density of 19.3 grams per cubic centimeter, that is, 19.3 g/cm3 or 19.3 g cm-3. Aluminium has a density of 2.7 grams per cubic centimeter, that is, 2.7 g/cm3 or 2.7 g cm-3.

Explanation:

Answer:2.7 g cm-3.

Explanation:Gold has a density of 19.3 grams per cubic centimeter, that is, 19.3 g/cm3 or 19.3 g cm-3. Aluminium has a density of 2.7 grams per cubic centimeter, that is, 2.7 g/cm3 or 2.7 g cm-3.

What is the ratio of the effusion rate of the helium to methane? (round to hundreds)

Answers

Answer:

2.00

Explanation:

From Graham's law; the rate of effusion is inversely proportional to the square root of the relative molecular mass.

Let the rate of effusion of Helium be R1

Let the rate of effusion of Methane be R2

Let the molecular mass of Helium be M1

Let the molecular mass of Methane be M2

Hence;

R1/R2 = √M2/M1

R1/R2 = √16.0294/4.0026

R1/R2 = 2.00

PLS HELPPPP OMG PLSPLSPLSPLSPLS

Answers

Answer:

D 44.8 L liters of hydrogen gas

When elements bond, what is the part of the atom doing the bonding?

Answers

Answer:

the  valance electrons

Explanation:

The amount of space is ___ and a common unit is ___.

A. mass, gram
B. volume, gram
C. mass, mL
D. volume, mL

Answers

Answer:

c

Explanation:

C mass, mL step by step

how many moles are in 5g of Na2CO3?
a) 0.047
b) 1
c) 2
d)21.2​

Answers

Answer:

0.047

Explanation:

Data : 5g , Na2CO3

Formula:

Molecular mass of Na2Co3 = no.of atomic mass x no. of atom

moles = mass÷ molecular mass

molecular mass = 2(23)+1(12)+3(16)

=106amu

moles = 5÷106

= 0.047 Ans:

What is the freezing point of solution that has 185.25 grams of Ca(OH)2 (formula mass = 74.1) dissolved in 2,500 grams of water at standard pressure?

Answers

Answer:

The freezing point depression ∆T = KF·m where KF is the molal freezing point depression constant and m is the molality of the solute. Rearrangement gives: mol solute = (m) x (kg solvent) where kg of solvent is the mass of the solvent (lauric acid) in the mixture. This gives the moles of the solute.

Explanation:

Does this help at all??

In 2011, fires in Bastrop County, Texas were the most damaging wildfires in Texas history. The fire spread through the pine trees and scorched nearly 5,700 acres of Bastrop State Park. The majority of the Houston toad’s habitat was lost, and the Lost Pines Forest was greatly affected. As ecological succession began, which of these most likely appeared in the Bastrop forest area first?
A.Shrubs and trees
B. Newly developed topsoil
C.Weeds and grasses
D.Lichens on fallen trees

Answers

C . Weed and grasses

Explanation : because it grew over time

The most likely appeared in the Bastrop forest area first is to be considered as the C.Weeds and grasses.

What is ecology?

It is the study that represents the relationships between a living organism that involved the human, and the physical environment.

It is at the individual, population, community, ecosystem, etc.

Hence, the option c is correct.

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Plants respond to different kinds of stimuli. A plant's roots searching for water are an
example of what kind of response?
A. thigmotropism
B. phototropism
C. hydrotropism
D. gravitropism

Answers

C. Hydrotropism is your answer!

Answer:

Explanation:

Hydrotropism

1. Which of the following
equalities is false?
A. 1 kilogram = 100 meters
B. 50 milliliters = 5 centiliters
C. 3 grams = 0.003 milligrams
D. 70 hectometers = 7,000 decimeters

Answers

The correct answer is C
The false
one is C.

Electrotonic configuration of potassium 19K ion equal the Electrotonic configuration of

1) ⁸0

2) ¹¹Na

3) ¹⁸Ar

4) ¹⁷C1​

Answers

3) 18ᴀʀ
Hope this helps!!!!!

When a comet enters the solar system, it curves toward the sun. Which statement describes why the sun does not move when a comet is nearby?

Answers

Answer:

Explanation:

When a comet enters the solar system it curves towards the Sun due to the Sun's gravitational pull. Every celestial object in the universe has a gravitational pull whose force is dependent on the object's mass. The larger the object is the more gravitational pull it will have. The Sun is the largest object in our Solar system and therefore has the most gravitational pull. This is why the comet curves toward the Sun, but the opposite does not happen because the comet's gravitational pull is not strong enough to pull the Sun.                  

!! brainliest answer !! please help it's due tonight :)

Answers

Answer:

3. D

28. also known as Freon 12

Explanation:

A student is making lemonade. He added 5 g of lemonade mix to a container of water. The student then weighed the container with the lemonade. The total weight was 23 g. The empty container weighed 8 g after all the lemonade was gone. How much did the water weigh? O A. 38 B. 108 C. 158 OD. 18 g RESET Arianna Thomas, ID#* *87 Growth: Science 6+ GA 2016 Question # 11​

Answers

23-8=15. Then you subtract the weight of the lemonade mixture (5) from the amount of combined weight (15) in order to get your answer (10). Hope this helps!

What is the atomic mass of an atom that contains 28 protons, 28 electrons, and 30 neutrons?
86
28
58
56

Answers

you add (only) the protons and neutrons, so the answer here is 58

please answer fast! Which of the following statements are false?
A: In a chemical change, atoms are rearranged to make new compounds.
B: The same element is present before and after a chemical change.
C: A physical change does not produce an entirely new substance.
D: A chemical property can be observed without changing the identity of the substance.



Answers

I believe it is C.

Hope this helps!

how does the law of conservation of mass applies to all chemical reactions?

Answers

Answer:

the mass of any one element at the beginning of a reaction will equal the mass of that element at the end of the reaction. If we account for all reactants and products in a chemical reaction, the total mass will be the same at any point in time in any closed system.

Explanation:

The law of conservation is Matter cannot be created or destroyed in chemical reactions so it means exactly that

How many moles of nitrogen are in 1 mole of Al(NO3)3?
O A. 4 moles of nitrogen
O B. 1 mole of nitrogen
C. 3 moles of nitrogen
O D. 7 moles of nitrogen

Answers

Answer:

c i think

Explanation:

How can you increase reaction rate in the forward direction? Chose all that
apply

Answers

Answer:

Sorry my task time about to run out : (

Explanation:

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