Chemistry College

dk how to do this help please

Dk How To Do This Help Please

Answers

Answer 1

Explanation:

hello

the answer is b

O or oxygen has 16 molar mass and C or carbon has 12

so CO2 or carbon dioxide=(2×O)+C=(2×16)+12=46

Related Questions


(ii) Explain why magnalium is harder than aluminium.

Answers

Answer:

Magnalium is stronger than aluminium alone but still has a low density.

Explanation:

What’s the answer?????? I accidentally clicked the 1st one.

Answers

Answer:

its the 1st one at the top

9. Compound A, with molecular formula C5H₁2 has only 1° and 4° carbons. What is its structure? Its other isomer has only 1°, 2° and 3° carbons. What is its structure also?
draw the structure​

Answers

Answer:

Ok giv me a min

Explanation:


HELP PLS ASAP


how many liters of CO2 are produced when 32.6 liters of propane gas C3H8 reacts with excess oxygen at STP?

C3H8 + 5O2 > 4H2O + 3CO2

Answers

Don’t even know to be honest

Why can’t sodium metal be manufactured by the electrolysis of brine?

Answers

Answer:

Explanation:

The quick and short answer to this question is that the moment it is made into Na (the atom) the moment that happens, Na will react with water to become NaOH. Sodium is very responsive to water.

Equation

2Na  + 2HOH ====> 2NaOH + H2

What are renewable resources?

Answers

Answer:

Renewable sources are something that can be renewed like
Plants
Trees
etc
uh

Explanation:

Non-renewable for example is you cant renew them at all
there built by the earth themselfs
Like
cole
gemstone
Steel

Metal
etc

How to pay taxes I MEAN

Calculate the volume that 3.
60g H2 gas will occupy at stp

Answers

Answer:

mass over molarmass ×volume

90

Can I get answer to both of those questions

Answers

1. pH = -log[H3O+]
pH = -log(3.4x10^-2)
pH = 1.5

2. As a solution becomes more basic, [H3O+] decreases while [OH-] increases.

One-fourth of a gaseous mixture is Argon and 3/4 of the gas is Oxygen. The total pressure in the container
is 8 atmospheres. What is the partial pressure of the Argon?

Answers

Answer:

nose

Explanation:

xde

MATH AND SCIENCE
Out of around 260,000 known species of angiosperms, approximately 195,000 are dicots. what percentage of angio sperms are dicots

Answers

Answer:

Explanation:

Formula

% = (dicots/angiosperms) * 100

Givens

angiosperms (total) = 260000

Dicots                      = 195000

Solution

% = (195000/260000) * 100

% = 0.75 * 100

Answer: % = 75% are dicots

Choose the answer that describes the hierarchy among these three body regions.
A. The oral region is part of the facial region, and the facial region is part of the cephalic region.
B. The cephalic region is part of the facial region, and the facial region is part of the oral region.
C. The cephalic region is part of the facial region, and the facial region is part of the manual region.
D. The oral region is part of the cephalic region, and the cephalic region is part of the facial region.

Answers

Answer:

letter: B

Explanation:

thats is the true answer.

pleas heart my heart my answer

Which statement best predicts and explains the product of a single displacement reaction when the cation (A) with an oxidation number of +2 and an anion (B) with the oxidation number of -3 react and form a compound?


A+2B-3 is the predicted formula when each metal cation has a charge of +2 and each non metal has a charge of -3.


B2A3 is the final formula for the metal anion bonding to the non-metal cation in a 2:3 ratio.


A3B2 is the predicted formula with an overall charge of the compound being zero and each atom has 8 valence electrons in their outermost electron shell.


A3B2 is the predicted formula is made when each metal cation gains three electrons from the anion while each nonmetal loses 2 electrons to each of the cations.

Answers

The statement that best predicts and explains the product of a single displacement reaction is ;   ( C ) A3B2 is the predicted formula with an overall charge of the compound being zero and each atom has 8 valence electrons in their outermost electron shell.

Octet state

Given that the oxidation number is +2 shows that it will be an octet when it donates its 2 electrons. also for octet B it will become complete when it accepts 3 electrons. Therefore in order to balance out the octet of each atom is by cross multiplying to get A3B2.

Hence we can conclude that The statement that best predicts and explains the product of a single displacement reaction is ;  A3B2 is the predicted formula with an overall charge of the compound being zero and each atom has 8 valence electrons in their outermost electron shell.

Learn more about Octet state : https://brainly.com/question/865531

What is the scientific word used to describe the process of the protein in the eggs changing form?

Answers

Answer:

Denaturation

Explanation:

Explain the four basic types of chemical reactions. Be sure to include a sample equation for each type.

Answers

Acid Base reaction (Neutralization reaction)

it is the reaction between acid and base which neutralize each other to give salt and water.

example: Hydrochloric acid + Sodium hydroxide --------> sodium chloride + water

HCl + NaOH--------> NaCl + H2O

Before balancing this equation, how many oxygen atoms are present on the product side of the following equation:

Answers

Answer:

3

Explanation:

co2 has 2 and h2o has 1

product is right side

What is the molarity of a solution formed from 0.625 moles of NaCl with a total volume of 250 mL

Answers

Answer:

2.5 M

Explanation:

.625 M / .250 Liter   = 2.5 M

This is my question ​

Answers

Answer:

[tex] \\ [/tex]

refer the three attached images for the respective answers.

hope helpful ~

What is the numbers of molecules for 65.8g of CO2?

Answers

Answer:

8.98*10^23 molecules CO2

Explanation:

The molar mass of CO2 is 44.0 grams/mol. If we convert 65.8 grams of CO2 into moles, 65.8g CO2 / 44.0g CO2 then we get about 1.49 moles of CO2. We know there are 6.02*10^23 molecules in a mole, so we would just multiply 1.49 mol CO2 * 6.02*10^23 = 8.98*10^23

▲ Two general chemistry students working together in the lab weigh out 0.832 g of CaCl2 2 H2O into a crucible. After heating the sample for a short time and allowing the crucible to cool, the students determine that the sample has a mass of 0.739 g. They then do a quick calculation. On the basis of this calculation, what should they do next? (a) Congratulate themselves on a job well done. (b) Assume the bottle of CaCl2 2 H2O was mislabeled; it actually contained something different. (c) Heat the crucible again, and then reweigh it.

Answers

After heating the crucible, cooling, and weighing the sample as 0.739 g, the students should have heated the crucible again and then reweigh the sample until a constant weight is obtained.

Drying samples with crucibles

The sample being heated, CaCl2 2 H2O, contains water of hydration.

In order to arrive at an anhydrous sample of the salt, all the water molecules must be completely evaporated off by heating.

To do so, the sample should have been heated to constant weight by repeated heating and weighing until there is no longer a change in the weight of the sample.

More on drying samples can be found here: https://brainly.com/question/21529281

if you observe a first quarter on January 3 on what date will you see a full moon?

Answers

if you observe a first quarter on January 3, the date will you see a full moon is on February 1st.

What is the full moon about?

The lunar phase during which the Moon is completely illuminated from Earth's perspective is known as the full moon. When Earth is situated halfway between the Sun and the Moon, this happens. This indicates that the near side of the moon, which faces Earth, is fully illuminated by the sun and appears as a roughly circular disk.

The Moon is a symbol for both the emotional and physical bodies. The full Moon is a time to be open and receive the spirit's light and awareness into your physical, emotional, and mental bodies

It takes 29 day, to get to the full moon. This will be:

= January 3 + 29 days

= February 1st

Learn more about moon on:

https://brainly.com/question/12676209

#SPJ1

Consider the nuclear equation below.
Na-
22Ne +98
0
10
Which is the missing value that will balance the equation?
O-1
O 0
O +1
O +2

Answers

Answer:

+1

Explanation:

Hi
Can someone explain the second marking point?
Why is it bubbles of air and not C02?

Answers

In order to float, the bubble hitches a ride in a gas is slightly denser then the air trapped inside of it: carbon dioxide

Titanium is a transition metal used as pins and plates to support badly broken bones. Titanium is extracted from an ore that
contains the mineral titanium oxide. This oxide is converted into titanium chloride. Titanium chloride is heated with sodium to
form titanium metal. This reaction takes place in an atmosphere of a noble gas, such as argon
4Na(s) + TICIO
Ti(s) + 4NaCl(s)
Calculate the mass of titanium that can be extracted from 570 kg of titanium chloride.
Relative atomic masses:
CI 35.5
Ti 48

What is the Mass of titanium (g)

Answers

Using the stoichiometry of the balanced chemical reaction, the mass of the Ti is 144Kg.

What is a chemical reaction?

The term chemical reaction refers to the combination of two or more substances to yiled one or more products.

The reaction equation here is; 4Na(s) + TICI4---->Ti(s) + 4NaCl(s)

Number of moles of TiCl4 = 570  * 10^3g/190 g/mol = 3000 moles

If 1 mole TiCl4 produces 1 mole of Ti

3000 moles of TiCl4 produces 300o moles of Ti

Mass of Ti produced = 3000 moles * 48 g/mol = 144Kg

Learn more about titatnium: https://brainly.com/question/14356798

How many moles of water are produced from the decomposition of 3.4g of hydrogen peroxide, H2O2

Answers

Answer:

0.1 moles

Explanation:

3.4 g * (1 mol/34 g) = 0.1 moles

Finally, examine the atomic spectrum below. Estimate the wavelength
of each spectral line, then use that collection of wavelengths to try and
determine the identity of the element using the internet. This is the
kind of work a graduate student in chemistry might be assigned to do.
400
450
500
650
700
750
550 600
wavelength (nm)
Identity of the element

Answers

The estimated wavelengths and identities of the elements of spectral line in the given atomic spectrum is:

blue spectral line - 470 nm; Iron green spectral line - 490 nm; Magnesium yellow spectral line - 610 nm; Sodiumred spectral line - 660 nm; Hydrogen

What is an atomic spectrum?

Atomic spectrum is the spectrum of frequencies or wavelengths of radiations absorbed or emitted when electrons transitions between on energyblevel to another.

The estimated wavelengths as well as identities of the elements of spectral lines shown above are as follows

blue spectral line - 470 nm; green spectral line - 490 nm; Ironyellow spectral line - 610 nm; Sodiumred spectral line - 660 nm; Hydrogen

Therefore, the wavelengths and colors of the spectral line in an atomic spectrum is useful in identifying elements.

Learn more about atomic spectrum at: https://brainly.com/question/1287643

Which one of the following pairs of atoms would form a non-polar covalent bond?

a. Cl and C1

b. Na and Cl

C. C.and o

d. N and O

Answers

The following pairs of atoms that would form a non-polar covalent bond would be, a. Cl and Cl

Quantity of atoms in .3521 mol in ZrSiO4

Answers

Answer:

look the image

Explanation:

Balance the following equation.

( ? )NaCl + ( ? ) AgNO3 → ( ? ) AgCl + ( ? ) NaNO3

Answers

Balanced equation:

NaCl + ( 1 ) AgNO₃ → ( 1 ) AgCl + ( 1 ) NaNO₃

(aq)               (aq)                (s)              (aq)

Both the sides are already balanced

If I add 30mL of water to 125mL of a 0.15M of NaOH solution, what will the molarity of the dilated solution be?

Answers

Answer:

.12 M

Explanation:

.15 M / L  * .125 L = .01875 Moles

now add 30 ml for total  155 ml = .155 L

.01875 M / .155 L = .12 M

Use the periodic table to answer the questions below.
Which diagram shows the correct electron
configuration for nitrogen (N)?

Answers

atomic mass for N = 7

electron configuration: 1s²2s²2p³

orbital diagram:

↑↓   ↑↓    ↑ ↑ ↑

1s²  2s²      2p³

Other Questions
Please help asap almost due True or false: A local area network is a group of computers, printers, and other devices connected to the same network and covers a large geographic range such as a city, a county, or a state. four pieces of graph paper a ruler two pencils a helper Follow these steps: Choose which person will be the sender (satellite) and which will be the receiver (television). Each person then draws a 10" by 10" square on a piece of graph paper. Draw a grid within the square, so that each small square of the grid is about 1 inch square. This should give you an area with 100 squares in it. The size of the small squares will depend somewhat on the graph paper used - make sure you use some of the lines on the graph paper as guidelines. The sender now draws a simple picture within the 10" x 10" square without letting the receiver see what he or she is drawing. The sender should now read the picture to the receiver, using a digital code. If a square on the graph paper is blank, the sender says Zero; if the square is filled in or has any mark in it at all, the sender says, One. Using this code, the sender starts with the top row and reads from left to right, one square at a time. The receiver, upon hearing this code, transfers the information to his own graph paper. The receiver must mark the graph paper by starting with the top row of squares and going from left to right. If the sender says zero, no mark is made. If the sender says one, the receiver should fill in the square completely! At the end of the first row, the sender should say, End row 1, and repeat this at the end of each row. At the end of the last row, compare the two pictures. Check the results to see how accurate the transfer was. Now, get two more pieces of graph paper and draw 10 by 10 squares on them. This time, your grid size should be close to 1/4 inch rather than one inch. You will have many more squares than before! You can use the same drawing or switch people and the new sender can draw another picture. Follow the same procedure. Describe your results. Compare the accuracy of the two pictures drawn by the receiver. Which one is more precise True or False? There is not an eclipse every month because the moon is not alwaysin the same plane as the sun. The formula for a ciprofloxacin otic dropquantity of each ingredient required to is given in the literature as follows10:make 1500 g of the powder. Ciprofloxacin 1 gCalcium Carbonate Propylene Glycol 5 parts 50 mLMagnesium Oxide Glycerin qs ad 1 part 100 mLSodium Bicarbonate 4 parts How many grams of ciprofloxacin Bismuth Subcarbonate 3 parts would be required to prepare 200 15-mL Which best describes what kind of speaker chase is? chase is not an effective speaker because he uses very informal language. chase is not an effective speaker because he is not confident about his idea. chase is a very effective speaker because he comes prepared to share. chase is a very effective speaker because he communicates non-verbally. What is the ICD 10 PCS code for CT abdominal with iv contrast? which decimal is equalient to 24 out 30 days Devaughn is 7 years older than Sydney. The sum of their ages is 103. What is Sydney's age? What was the result of Mandelas trial for conspiracy? is odysseus and cyclops character foils? A principal records the lunch choices for 7th grade for a day. Of the 160 students, 21 brought their lunch from home, 103 purchased lunches, and 36 brought a lunch from home and purchased an ice cream. Are the lunch choices equally as likely? Justify your answer by calculating the probability of each lunch choice Consider the interaction between labor and capital within the production process and answer the following questions.How do economists refer to the amount of capital employed per worker?a. capital productivityb. the capital stockc. the human capital percentaged. the capitallabor ratioWhat would likely happen if the amount of capital employed per worker grew?a. Wages would fall because capital would be more important in production.b. Wages would fall because physical capital would replace human capital.c. Wages would be unchanged because wages are unaffected by the quantity of capital.d. Wages would rise because workers would become more productive. The distance around Paulines block is 0.96 miles. Which student provides the best estimate for the number of miles she travels if she rides her bike abound the block 13 times? Enzo. 13 is close to 20. 20 plus 0.96 equals 20.96. Hong. 13 is close to 20. 20 times 0.96 equals 19.20. Maxime. 0.96 is about 1. 13 plus 1 equals 14. Xiu. 0.96 is about 1. 13 times 1 equals 13. Enzo Hong Maxime Xiu How did the results of the 1854 congressional elections show what was happening in the country? Why do good speakers use some of the specialized vocabulary related to a topic? Listeners will believe that the speaker knows a lot about the topic if he or she uses those words. Some listeners will get bored if they dont hear at least a few words that they dont know. Specialized vocabulary helps the speaker remember his or her main points. Twain loves the use of exaggeration and hyperbole. This love is very apparent in the friendship between Huck and Tom, two very different characters. Describe in your own words, a scene from anywhere in chapters 33-35 in which the contrast between the two close friends is made all the clearer by the use of exaggeration and hyperbole. Cite specific examples. Your response should be at least 150 words long. two different Models of Econonomic Systems? Choose the answer that describes the hierarchy among these three body regions.A. The oral region is part of the facial region, and the facial region is part of the cephalic region.B. The cephalic region is part of the facial region, and the facial region is part of the oral region.C. The cephalic region is part of the facial region, and the facial region is part of the manual region.D. The oral region is part of the cephalic region, and the cephalic region is part of the facial region. Potential energy stored within chemical bonds is called:.