Will the composition of water molecules vary depending on their source?

Answers

Answer 1

Answer:

It does not matter where the sample of water came from or how it was prepared. Its composition, like that of every other compound, is fixed.


Related Questions

What makes this inauguration different from the past?

Answers

Answer:

there's just a lot of drama around grumpy trumpy's StOlEN eLecTiOn which are all just fake claims. all his hardcore followers are brainwashed into believing anything he says, so people (especially people who are inside the capitol) fear that trump's followers might incite violence AGAIN even after they broke into the Capitol on the 6th.

That's why they have the National Guard and thousands of people to keep the building secure during Biden's Inauguration.

hope this helps!


How many atoms are in .938 moles of CO2?

Answers

Answer: 1.695x10^24 atoms

Explanation: 0.938 moles CO2 = 0.938xavogadro number molecules CO2, so number of atoms = 3x0.938x6.02214076x10^23 = 1.695x10^24

Which of these is not a property of minerals?

A) Clevage
B) Fracture
C) Color
D) Smell

Answers

The answer is D - smell.

A patient is prescribed 100mg/day of antibiotic for 2 weeks. The antibiotic is available in vials that contain 20mg/vial of the drug. How many vials are necessary for the entire treatment?

Answers

i have no idea, but i’m pretty sure you gotta divide

what is the empirical formula for a compound that is 40% S, and 59.9% O?​

Answers

Answer:

O3S

Sulfur Trioxide

Explanation:

How would a long period without sunlight affect the food web?

It would cause consumers to consume more food.

It would have no effect on the food web.

It would stop decomposers from breaking down matter.

It would stop producers from producing food.

Answers

Answer: it would stop producers from producing food.

Explanation: why? Without the action of the producers to turn sunlight into food, the producers would die, and consumers that rely on them would lose their food source and die too.

Answer:

It would stop producers from producing food

Explanation:

Producers would die, and if producers died, consumers would die too.

Hope this helps

Why is there no sound in outer space? PLEASE HELP IF YOU WANT BRAINLEIST AND A LIKE ON URE COMMENT!


A. The speed of sound is too slow for space.


B. There is no medium in which it can travel.


C. There are too many other noises.


D. There is only echolocation in space.

Answers

Answer:

B

Explanation:

What is the molecular formula for a compound with a molar mass of 42.08g/mol and an empirical formula of ch2

Answers

Answer:

[tex]C_3H_6[/tex]

Explanation:

Hello!

In this case, since the empirical formula is the smallest representation of the molecular formula, it is known that the times in which the empirical formula is into the molecular formula is a whole number and is computed by dividing the molar mass of the molecular formula by that of the empirical formula as shown below:

[tex]\frac{42.08g/mol}{12.01+1.01x2}= \frac{42.08g/mol}{14.03g/mol}=3[/tex]

Thus, the molecular formula times the empirical formula by 3 to obtain:

[tex]C_3H_6[/tex]

Regards!

I need a answer ASAP

Answers

Answer:

3.2 millions years old

Explanation:

i hope it helps :)

what element is in group 13, period 4

Answers

Answer:

Gallium

Explanation:

Answer:

Gallium

Explanation:

What is a molecule contains the genetic instructions for the development and functioning of all living organisms found in the nucleus of a cell

Answers

DNA (short for deoxyribonucleic acid)

Give the IUPAC name for each compound.

Answers

Answer:

a. 1-fluoro-3,3,4-trimethyl-pentane.

b. 1-iodo-3-ethyl-2-methyl-hexane.

c. 1,3-dichloro-5-dimethyl-hexane.

d. 1-bromo-3-methyl-cyclopentane.

Explanation:

Hello!

In this case, according to the IUPAC rules for the listed alkyl halides, we first need to name the halogens (considering periodic order) then alkyl radicals and finally the parent chain; thus, the names are given below:

a. 1-fluoro-3,3,4-trimethyl-pentane.

b. 1-iodo-3-ethyl-2-methyl-hexane.

c. 1,3-dichloro-5-dimethyl-hexane.

d. 1-bromo-3-methyl-cyclopentane.

e. 5-chloro-1-bromo-1,1,5-trimethyl-pentane (radicals are not clear).

Best regards!

If one force on an object is 5 N upward and the other is 10 N downward what is the objects motion?

Answers

5 Newton’s down, because you subtract the 10-5 since their opposing forces so you would get 5 units downward as your net force

To solve this we must be knowing each and every concept related to force. Therefore, the  objects motion will be towards downward with a force of 5 N.

What is force?

A force is an outside entity that has the power to alter a body's state of rest or motion. It has a direction and a magnitude. The point where forces are applied is determined by the the force's direction as well as the application of the force.

Newton and dyne units are used to measure the force exerted on an item. When using the centimeter kilogram second system of units, force is measured in dynes (CGS unit). In the common international system of units, it is denoted by the letter Newton (N) (SI unit).

upward force=5 N

downward force= 10 N

total force acting on body=downward force-upward force

                                          = 10 N - 5 N

                                          =5 N downward force

The  objects motion will be towards downward with a force of 5 N.

Therefore, the  objects motion will be towards downward with a force of 5 N.

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determine the molar mass for ammonia (NH3) in g/mol.

Answers

Answer:

17.031 g/mol

Explanation:

PLEASE HELP FREE BRAINLIEST DUE AT 1:40 PM EST
A block with a volume of 20 cm3 has a density of 5 g/cm3. The block is cut into two pieces. One piece has a volume of 15 cm3, and the other piece has a volume of 5 cm3. What are the densities of the two pieces?

Answers

Answer:

wouldnt they still have the same density?

Explanation:

for example, the density of iron is 7.874 g/cm^3 no matter how big the piece is. I hope this helps.

The gas in the discharge cell of a laser contains (in mole percent) 11% CO2, 5.3% N2, and 84% He. (a) What is the molar mass of this mixture

Answers

Answer:

[tex]MM_{mixture}=9.68g/mol[/tex]

Explanation:

Hello!

In this case, since the molar mass of gaseous mixtures can be determined via a weighted average containing the molar mass of each gas and the mole fraction (mole percent divided by 100) as shown below:

[tex]MM_{mixture}=x_{CO_2}M_{CO_2}+x_{N_2}M_{N_2}+x_{He}M_{He}[/tex]

Now, we plug in to obtain:

[tex]MM_{mixture}=0.11*44g/mol+0.053*28+0.84*4\\\\MM_{mixture}=9.68g/mol[/tex]

Best regards!

g Determine the oxidation state for each of the elements below. ... The oxidation state of ... phosphorus ... in ... phosphorous tribromide PBr3 ... is ... . The oxidation state of nitrogen in nitrogen gas N2 is . The oxidation state of arsenic in arsenic acid H3AsO4 is .

Answers

Answer:

- P in PBr3 is +3.

- N in N2 is 0.

- As in H3AsO4 is +5.

Explanation:

Hello!

In this case, since the determination of the oxidation states is performed by using the well-known charge balances, we can proceed as shown below:

- P in PBr3: Here, bromide ions have an oxidation state of -1, so we follow:

[tex]P^xBr_3^-\\\\x-3=0\\\\x=+3[/tex]

Thus, the oxidation state is +3.

- N in N2: Here, since nitrogen is bonding with nitrogen and it is neutral, we infer its oxidation state is 0.

- As in H3AsO4: Here, oxygen is -2 and hydrogen +1, so we follow:

[tex]H_3^+As^xO_4^{-2}\\\\3+x-8=0\\\\x=8-3\\\\x=5[/tex]

Thus, the oxidation state is +5.

Best regards!

What element corresponds to period 5, group 2

Answers

Answer:

Strontium is the second element placed in the 5th period

Hope this will help you if not so advance sorry :)


Write ashort note on the
first battle of
of panipat​

Answers

Answer:

The First Battle of Panipat was fought between the invading forces of Babur and the Lodi Empire, which took place on 21 April 1526 in North India. It marked the beginning of the Mughal Empire. This was one of the earliest battles involving gunpowderfirearms and field artillery.

For you to write an essay on  Panipat first bring into view

Introduction body conclusion

Then write a brief story using this format.

How to write a short note on the first battle of Panipat?

In writing this essay, you must consider the structure and content of the essay or short note

For structure kick off with

Introduction body conclusion

In conclusion, for the content of the short note you can consider this,

Panipat fought its first battle on 21 April 1526 in the North of India, This battle was fought between the invading powers of Babur and the Lodi Empire.

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What carpet Burns in a deficiency of O2 a mixture of CO and CO2 forms.Carbon Burns in excess O2 to form only CO2 and CO Burns in excess O2 to form only CO2. Calculate ΔH for C(graphite +1/2O2) →CO(g).

Answers

Answer:

Explanation:

From the combustion of carbon, the reactions occurring in limited oxygen conditions are:

[tex]C(graphite) + \dfrac{1}{2}O_{2(g)} \to CO_{(g)}[/tex]  

[tex]C(graphite) + O_{2(g)} \to CO_{2(g)}[/tex]  

If it occurs in excess, then any leftover CO changes to CO2. i.e.

[tex]C(graphite) + O_{2(g)} \to CO_{2(g)}[/tex]   ---- (1)

[tex]CO_{(g)} + \dfrac{1}{2}O_{(g)} \to CO_{2(g)}[/tex]          ----- (2)

From (1), the enthalpy change is:

[tex]\Delta H_{rxn1} = \Delta H^0_{fCO_2(g)} - ( \Delta H^0_{f C(graphite)}+ \Delta H^0_{fCO_2(g)}[/tex]

[tex]\Delta H_{rxn1} =-393.5 \ kJ/mol -(0+0)[/tex]

[tex]\Delta H_{rxn1} =-393.5 \ kJ/mol[/tex]

From (2), the enthalpy change is:

[tex]\Delta_{rxn2} = \Delta H^0_{fCO_2(g)} - ( \Delta H^0_{fCO(g)} + \dfrac{1}{2} \Delta H^0_{fO_2(g)})[/tex]

[tex]\Delta_{rxn2} = -393.5 \ kJ/mol -(-110.5 + \dfrac{1}{2}(0))[/tex]

[tex]\Delta_{rxn2} = -283.0 \ kJ/mol[/tex]

Subtracting (2) from (1), we get:

[tex]C(graphite) + O_{2(g)} \to CO_{2(g)} \ \ \ \Delta H_{rxn} = -393.5 \ kJ/mol}[/tex]

[tex]CO_{(g)} + \dfrac{1}{2} O_2(g) \to CO_{2(g)}} \ \ \ \Delta H _{rxn2} = -283.0 \ kJ/mol[/tex]

                                                                                                   

[tex]C(graphite) + O_{2(g)} \to CO (g) + \dfrac{1}{2}O_{2(g)} \ \ \ \Delta H_{rxn} = -110.5 \ kJ/mol[/tex]

[tex]C(graphite) + \dfrac{1}{2} O_{2(g)} \to CO (g) \ \ \ \Delta H_{rxn} = -110.5 \ kJ/mol[/tex]

The enthalpy change ΔH of the reaction = -110.5 kJ/mol

Which process creates two new cells from one existing cell in order to maintain homeostasis? (4 points) a Cell division b Cellular respiration c Photosynthesis d Reparation

Answers

Answer:

Cell division.

Explanation:

What is the systematic name of the following compound?
Li2S

Answers

Answer:

the systematic name is called Lithium sulfide.

An inorganic substance composed of the elements lithium (Li) and sulfur (S) is known as lithium sulfide [tex](Li_2S)[/tex].

It is a substance that solidifies in the shape of a crystal. Lithium ions in lithium sulfide have a positive charge, while sulfide ions have a negative charge. The chemical lithium sulfide is important in many industries. It is often employed in the synthesis of various lithium compounds, the manufacture of lithium batteries, and the manufacture of ceramics. Due to their high energy density, lithium batteries are often employed in portable electronics and electric vehicles.

Lithium sulfide is an ionic compound that has a high melting point in terms of physical characteristics. Although it is insoluble in water, many organic solvents can help dissolve it.

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How many milliliters of 60% carbonic acid must be mixed with how many milliliters of 15% carbonic acid to make 650 milliliters of a 38% carbonic acid solution

Answers

Answer:

348.9 mL of the 60% solution and 251.1 mL of the 15% solution.

Explanation:

First, we calculate how many mililiters of pure carbonic acid are there in 650 mL of a 38% solution:

650 mL * 38/100 = 247 mL

Then we can express the sum of both initial solutions as:

1)  x * 60/100 + y * 15/100 = 247

for the volume of carbonic acid; and

2)  x + y = 600 mL

For the volume of the solutions.

We now have a system of two equations and two unknowns (x is the volume of the 60% solution and y is the volume of the 15% solution).

We express x in terms of y in equation 2):

x = 600 - y

And replace x in equation 1):

(600 - y) * 60/100 + y * 15/100 = 247360 - 0.6y + 0.15y = 247-0.45y = -113y = 251. 1 mL

Finally we calculate x using equation 2):

x + 251.1 = 600x = 348.9 mL

what is the answer to this question?​

Answers

Answer:

Vertebrae

Explanation:

Vertebrae are the 33 individual bones that interlock with each other to form the spinal column. The vertebrae are numbered and divided into regions: cervical, thoracic, lumbar, sacrum, and coccyx (Fig. 2). Only the top 24 bones are moveable; the vertebrae of the sacrum and coccyx are fused.

I believe the answer is vertebrae. There are 24 bones stacked up on each other that make up your backbone.

Prokaryotic is an example of a/an-

A:tissue
B:cell type
C:organ
D:organism

Answers

Answer:

B. Cell Type

Explanation:

that is the answer i believe

Answer:

option b- cell type

Explanation:

almost absolutely positive

water H2O is a molecule made of oxygen and hydrogen. The bonds that hold water molecules together are due to share ___, and known as covalent bonds.​

Answers

water H2O is a molecule made of oxygen and hydrogen. The bonds that hold water molecules together are due to share ELECTRONS and known as covalent bonds

Equilibrium occurs in what type of reactions?
A. Catalytic
B. Irreversible
C. Reversible
D. Combustion

Answers

Answer:

B. Irreversible

Explanation:

Answer: C  Reversible

Explanation:

Founder's Education Quiz

what is the volume of the rock? if the water rose from 50L to 70mL

Answers

20 I think that’s the volume of it because 50-70 is 20 so it must’ve been 20 volume that lifted the water to 70 ML

Which word describes the amount of matter an object contains?
altitude
density
mass
pressure

Answers

Mass witch would be c i covered this in class

Answer:

Mass

Explanation:

Answered this question multiple times and got it correct

Hope this helped!

Stay safe!

which an element that exist into two form​

Answers

Answer:

Sulphur

Explanation

Rhombic and monoclinic sulphur are its allotropic forms

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Please help!!-help-help Pls I need help with 2 Im begging I been stuck on it for a while pls have a good day pls I need help what country has not experienced balkanization? A geneticist crossed pure breeding black mice with pure breeding brown mice. All the mice in the F1 generation had black coats. When these mice were crossed, they yielded 961 black coated mice and 317 brown coated mice.Fill in the new combinations of alleles in the F2 generation. PLS HELP FAST, IM FAILING LOLWhat is true about life under slavery?A. Slave owners discouraged slaves from adopting elements of whitecultureB. Slave owners did not pay slaves for their work,c. Enslaved African Americans had equal rights to those of whitepeopleD. Slaves had a great deal of freedom other than choosing where towork. NEED HELP ASAP DUE 11:30PM ! Which descriptions of the English colonies in North America are accurate?Choose all answers that are correct.Question 46 options:The king granted a lot of self-government to Massachusetts and other colonies in the hope they would send back raw materials and would start paying taxes.The men on the Mayflower signed an agreement to write fair laws for the good of the colony.Virginia planters paid English laborers good wages to come work on their plantations.Jamestown was established on good ground near clean water in a healthy environment.Only about 1 in 5, or 20 percent, of early colonists in Virginia survived Use the coordinate plane to write the ordered pair for each plotted point. Help fast PLEASE HELP! SEE ATTACHED! Match the expression with an equivalent expression 6( n + 4 ) = Can anyone please help me solve this?? Convert the fraction 7/8 into a decimal number A: x/8=3/4B: 2/5=x/40C: 1/8=x/40D:x/10=12/15 In The Raven, which of the following inferences is most strongly supported by thepassage below need helps pls will give thanks Whats 2*4 equal to in a Meath knowledge Jori is 2 years older than Sage but 4 years younger than Victoria. Sage is 3 years less than a score. How old is sage? please show an explanation. How are modern maps and ancient maps similar?a.They both feature three-dimensional drawings.b.They both rely on art and science for mapmaking.c.They both rely on paper-based drawings of an area.d.They both focus on the physical features of an area. Please helppppppppppp 3(2(8-2x4)+25divided by 5 )-(2(8 divided by 4x2)-7(7-2x3) Calculate the volume of 1280 kilograms of aluminium if the density is 2700kg/m3