PLEASE HELP I AM FAILING

PLEASE HELP I AM FAILING
PLEASE HELP I AM FAILING

Answers

Answer 1

Answer:

160.3 g S

Explanation: there you go

PLEASE HELP I AM FAILING

Related Questions

Hey y’all is these answers correct?

Answers

Answer:

ʏᴇs, ɪ ᴛʜɪɴᴋ

Explanation:

TᕼᗩᑎKՏ ᒪOᗪՏ

yes
source: i’m black

How do chemists predict the shapes of molecules?

Due to the repulsion between electrons, valence electrons will be arranged as close to each other as possible.

Due to the attraction between electrons, valence electrons will be arranged as close to each other as possible.

Due to the repulsion between electrons, valence electrons will be arranged as far apart from each other as possible.

Chemists can't predict the shape of molecules, because the attractive forces between valence electrons are unpredictable.

Answers

due to the repulsion, the electrons will be apart from each other

A.  Due to the repulsion between electrons, valence electrons will be arranged as close to each other as possible.

The approximate shape of a molecule can often be predicted by using what is called the valence-shell electron-pair repulsion (VSEPR) model.Electrons in bonds and in lone pairs can be thought of as a charge cloud that repels one another and stay as far apart possible, thus causing molecules to assume specific shapes.The shape of a molecule is determined by the location of the nuclei and its electrons.

Therefore, the correct option is A.

Learn more:

brainly.com/question/12116076

Elements that become cations during bonding become smaller as a result.
A.
True

B.
False

Answers

It’s False sorry if it’s wrong but I hope it help

Speed is the rate of change of position expressed as _____ traveled per unit of time.

Answers

Answer:

distance traveled per unit of time.

what is the molarity of a koh solution if 25.0 ml neutralizes 35.0 ml of a 0.200 m hcl solution?

Answers

If 25.0ml neutralizes 35.0 ml of a 0.200M HCl solution, the molarity of KOH solution is 0.28M

The reaction between KOH solution and HCl is written below.

[tex]HCl + KOH \rightarrow KCl + H_2O[/tex]

Volume of KOH, [tex]V_B[/tex] = 25.0 ml

Volume of HCl, [tex]V_A=35.0 ml[/tex]

Molarity of HCl, [tex]C_A=0.200 M[/tex]

Molarity of KOH, [tex]C_B=?[/tex]

Number of moles of HCl, [tex]n_A=1[/tex]

Number of moles of KOH, [tex]n_B=1[/tex]

The mathematical equation for neutralization reaction is:

[tex]\frac{C_AV_A}{C_BV_B} =\frac{n_A}{n_B}[/tex]

Substitute  [tex]C_A=0.200 M[/tex],  [tex]n_A=1[/tex],  [tex]n_B=1[/tex],  [tex]V_B[/tex] = 25.0 ml, and  [tex]V_A=35.0 ml[/tex] into the equation above in order to solve for [tex]C_B[/tex]

[tex]\frac{0.2 \times 35}{C_B \times 25}=\frac{1}{1} \\\\25C_B=7\\\\C_B=\frac{7}{25} \\\\C_B=0.28M[/tex]

Therefore, the molarity of KOH solution is 0.28M

Learn more on molarity here: https://brainly.com/question/17138838



Why were your results for the Southern Hemisphere opposite of what you found for
the Northern Hemisphere?

Answers

Due to the tilt of the earth

Find the percent composition of OXYGEN in Manganese (III) nitrate, Mn(NO3)3.

Answers

Answer:

59.8%

Explanation:

First find the Mr of manganese (III) nitrate.

Mr of Mn(NO₃)₃ = 54.9 + (14 × 3) + (16 × 3 × 3) = 240.9

Since we have to find the percentage composition of oxygen, we need to find the Mr of oxygen in the compound, which is:

Mr of (O₃)₃ = (16 × 3) × 3 = 144

Now we can find percentage composition / percentage by mass of oxygen.

% composition = [tex]\frac{Mr\ of\ oxygen\ in\ compound}{Mr\ of\ compound}[/tex] × 100

% composition = [tex]\frac{144}{240.9}[/tex] × 100 = 59.776%

∴ % compostion of oxygen in maganese(III)nitrate is 59.8% (to 3 significant figures).

what is the equilibrium concentration of co at 1000 k?

Answers

Answer:  For the reaction, K c = 255 at 1000 K. If a reaction mixture initially contains a CO concentration of 0.1550 M and a Cl 2 concentration of 0.171 M at 1000 K. 1.

Explanation:

what would u add if the soil is too basic~~ ?​

Answers

Slaked lime is the ans

thank me later : p

Passing an electric current through a sample of water (H2O) can cause the water to decompose into hydrogen gas (H2) and oxygen gas (O2) according to the following equation. 2H2O Right arrow. 2H2 O2 The molar mass of H2O is 18. 01 g/mol. The molar mass of O2 is 32. 00 g/mol. What mass of H2O, in grams, must react to produce 50. 00 g of O2? 14. 07 23. 05 28. 14 56. 28.

Answers

The mass of water decomposed to produce 50 g oxygen has been 56.28 g. Thus, option D is correct.

The reaction for the decomposition of water has been:

[tex]\rm 2\;H_2O\;\rightarrow\;H_2\;+\;O_2[/tex]

From the balanced equation, 2 moles of water decomposes to form 1 moles of hydrogen and 1 mole of oxygen.

The mass of oxygen produced has been 50 g. The moles of oxygen has been given by:

[tex]\rm Moles=\dfrac{mass}{molar\;mass}[/tex]

The moles of oxygen has been:

[tex]\rm Moles_O_2=\dfrac{50}{32}\;mol\\Moles_O_2=1.5625\;mol[/tex]

The moles of oxygen produced has been 1.5625 mol.

The moles of hydrogen decomposed has been given from the balanced chemical equation as:

[tex]\rm 1 \;mole\;O_2=2\;mole\;H_2O\\1.5625\;mol\;O_2=1.5625\;\times\;2\;mol\;H_2O\\1.5625\;mol\;O_2=3.125\;mol\;H_2O[/tex]

The moles of hydrogen decomposes has been 3.125 mol.

The mass of hydrogen decomposed has been given by:

[tex]\rm Mass=moles\;times\;molar\;mass\\Mass_{H_2O}=3.125\;\times\;18.01\;g\\Mass_{H_2O}=56.28\;g[/tex]

The mass of water decomposed to produce 50 g oxygen has been 56.28 g. Thus, option D is correct.

For more information about moles produced, refer to the link:

https://brainly.com/question/10606802

if you can’t already tell by the amount of questions i do not understand chemistry lol, giving brainliest

Answers

Answer:

Ok, so the process here is to convert the mass of H2 (hydrogen gas) to moles by dividing the mass by the molar mass of H2. Once you have the moles then you have to multiply by the STP (standard temperature and pressure) molar volume which should be 22.4.

Molar mass of H2 = (1.01)x2 = 2.02g/mol

19.3/2.02 = 9.55 moles

Now just multiply the moles by the molar volume

9.55 moles x 22.4 = 213.92 Litres of H2 are in 19.3g of H2

significance of symbol Mg​

Answers

Answer:

Magnesium

Magnesium is used in products that benefit from being lightweight, such as car seats, luggage, laptops, cameras and power tools. It is also added to molten iron and steel to remove sulfur. As magnesium ignites easily in air and burns with a bright light, it's used in flares, fireworks and sparklers.

I hope this helps you !!
It’s magnesium and magnesium is magnetic

where does oxidation occur in an electrochemical cell

Answers

Anode


According to the mnemonic “Red Cat An Ox”, oxidation occurs at the anode and reduction occurs at the cathode. Since the reaction at the anode is the source of electrons for the current, the anode is the negative terminal for the galvanic cell.

It takes 60 mL of 0.20 M of sodium hydroxide (NaOH) to neutralize 25 mL of carbonic acid (H2CO3) for the following chemical reaction:


2 NaOH + H2CO3 → Na2CO3 + 2 H2O


The concentration of the carbonic acid is _____.

Answers

It requires 60 mL of 0.20 M sodium hydroxide [tex](NaOH)[/tex] to neutralize 25 mL of carbonic acid [tex](H_2CO_3)[/tex], hence the carbonate ions concentration is [tex]0.24M[/tex].

Given:

Reaction:

[tex]\to \bold{2NaOH + H_2CO_3 \to Na_2CO_3 + 2H_20 }[/tex]

[tex]NaOH[/tex] volume [tex](V_B) = 60 \ ml[/tex]  

[tex]H_2CO_3[/tex] Volume [tex](V_A) = 25\ ml[/tex]  

[tex]NaOH[/tex] Molarity [tex](C_B) = 0.20\ M[/tex]

[tex]H_2CO_3[/tex] moles [tex](n_A) = 1[/tex]

[tex]NaOH[/tex] moles [tex](n_B) = 2[/tex]

To find:

[tex]H_2CO_3[/tex] Molarity [tex](C_A) =?[/tex]

Solution:

Using the neutralization reaction:  

[tex]\to \frac{C_AV_A}{C_BV_B} =\frac{n_A}{n_B} \\\\[/tex]

[tex]\to C_B = 0.2\ M \\\\ \to n_A = 1 \\\\ \to n_B = 2 \\\\ \to V_B = 60\ ml \\\\ \to V_A = 25\ ml[/tex]

Calculating the [tex]C_A[/tex]:

 [tex]\to \frac{C_A \times 25}{0.2 \times 60} =\frac{1}{2} \\\\\to C_A =\frac{1 \times 0.2 \times 60}{2 \times 25} \\\\\to C_A =\frac{1 \times 2 \times 12}{2 \times 5 \times 10} \\\\ \to C_A =\frac{ 12}{ 5 \times 10} \\\\\to C_A = \frac{6}{5 \times 5} \\\\\to C_A = \frac{6}{25} \\\\\to C_A=0.24\ M[/tex]

Therefore, the concentration of carbonic acid is "0.24M".

Learn more about the concentration:  

brainly.com/question/9889034

The concentration of carbonic acid( H₂CO₃) is 0.24 M.

The given reaction:

2 NaOH + H₂CO₃ → Na₂CO₃ + 2H₂O

Volume of NaOH  = 60mL

Volume of H₂CO₃ = 25 mL

Molarity of NaOH= 0.20M

To find:

Molarity of H₂CO₃=?

2 moles of NaOH and 1 mol of H₂CO₃ reacts to give 1 mol of Na₂CO₃.

Using the neutralization reaction:  

Consider A to be NaOH and B to be  H₂CO₃

[tex]\frac{\text{Number of moles of A}}{\text{Number of moles of B}} =\frac{\text{Molarity of A*Volume of A}}{\text{Molarity of B*Volume of B}}[/tex]

On substituting the values in order to calculate molarity of H₂CO₃:

[tex]\text{Molarity of B}=\frac{1*0.2*60}{2*25} \\\\\text{Molarity of B}=0.24M[/tex]

Therefore, the concentration of H₂CO₃ is 0.24 M.

Learn more:

brainly.com/question/19943363

which of the following best describes a single replacement reaction?

two elements combine to form a compound

one element takes the place of another in a compound

two elements switch places in a compound

a compound breaks into separate elements

Answers

Answer:

One element takes the place of another in a compound

Explanation:

I just took a test for it and got it right. :)

Hope This Helps :)

Which of the following has mass?
A. Space
B. Light
C. Matter
Ο Ο
D. Force

Answers

Answer:

matter should be the answer

Explanation:

Hope this helps!

Answer:

matter because matter makes up everything in the world EVERYTHING like this computer ri am typing on? matter. what ever device you are using to view this? matter. everything is made of matter. matter is starting to sound weird now so I'm gonna stop saying it and this is the end of the answer remember THAT ANSWER IS MATTERR!!!!!

Question 20 0/1 pts What is the frequency of a light wave with the wavelength of 680 nm? 'Reminder: the speed of light is 3.00 X 10 m/s​

Answers

Answer:

[tex]4.4*10^{14}[/tex]Hz

Explanation:

what are subatomic particles?​

Answers

Explanation:

a particle smaller than an atom (e.g., a neutron) or a cluster of such particles (e.g., an alpha particle).

has an atomic number of 1.

Answers

There are many with atomic number 1

hydrogen , helium , lithium , beryllium etc.

Hope this answer helps you dear!.

Answer:

With atomic number 1 is hydrogen

Explanation:

The valence with 1 is hydrogen, lithium.....

according to the arrhenius concept, if naoh were dissolved in water, it would act as

Answers

Answer:

base

Explanation:

The substance NaOH will be disassociated in ions of Na and OH.

Ahrrenius concept of base it's anything that dissolved in water produces OH.

Mendeleev's arrangement of the periodic table was in order of increasing ____.
A. atomic number
B. atomic mass
C. neutron number
D. valence electron number

Answers

Answer:

B. atomic mass

Explanation:

He arranged the elements into rows in order of increasing mass so that elements with similar properties were in the same column.

How is a stable hydrogen atom different from every other atom?

Answers

Answer:

a hydrogen atom contains only one proton in it's nucleus, while atoms of all other elements contain more than one proton

Brainliest plzz

1. One atom contains 29 protons and 34 neutrons. Another atom of the same element has a mass number of 65. How many protons and neutrons does this unknown atom have?

A. 28 protons, 37 neutrons
b. 29 protons, 36 neutrons
C. 29 protons, 35 neutrons
D. 31 protons, 34 neutrons

Answers

Answer:

b

Explanation:

because its the atom of the same element, the no of protons doesn't change but the mass number changes so we can find the mass number by:

(mass number = atomic no/no of protons + no of neutrons)

here;

mass number given = 65

and we know, no of protons = 29

let no of neutrons = x

hence,

65 = 29 + x

x= 65 – 29

x= 36

hence your answer is b

Why is it important to be careful when walking on an icy sidewalk?

Ice moves faster than you do.

There is less friction on an icy surface.

Ice is heavier than you, so it is a greater force.

none of the above

Answers

Answer:

The is less friction on an icy surface

Explanation:

This is because when u walk on plain ground there is steady friction on the surface but when u walk on an icy floor these is barely any friction which is why it's hard to walk on.

Answer:

There is less friction on an icy surface.

Hope that helps.

Explanation:

according to iupac nomeclature rules which set of chemical name and formula for the same compound is correct?

Answers

Answer:

stock and traditional

Explanation:

the iupac says so

If the temperature changes by 100 K, by how much does it change in degrees Celsius?
A. 0 degrees Celsius
B. 100 degrees Celsius
C. 37 degrees Celsius
D. 273 degrees Celsius

Answers

Taking into account the degrees Celsius and Kelvin, if the temperature changes by 100 K, by 100 degrees Celsius it change in degrees Celsius.

A degree Centigrade is a unit of temperature (the physical quantity that reveals the level of heat) whose symbol is °C.

On the other hand, the degree Kelvin, whose symbol is K, is the unit of temperature on the scale created by William Thomson Kelvin, in 1848, based on the degree Celsius, he established his zero point (0) at zero absolute (-273.15 ° C). The figure 0 K is equivalent to the theoretical point where gases have no volume. Absolute zero or 0 K is the point where molecules theoretically stop moving. It is the "perfect" cold.

Considering that zero on the Celsius or degrees centigrade (0 ° C) scale is defined as the equivalent of 273.15 K, the conversion from degrees ° C to K is carried out using the following expression:

T(K)= T(°C) + 273.15 K

In this case, if the temperature changes by 100 K, as it is a change in temperature, the numerical value in K units is the same in ° C units.

Then, the correct answer is option B. if the temperature changes by 100 K, by 100 degrees Celsius it change in degrees Celsius.

Learn more about degrees Celsius and Kelvin:

https://brainly.com/question/2800860?referrer=searchResults

Which of these substances are greenhouse gases? Check all that apply. Oxygen carbon dioxide helium methane nitrous oxide.

Answers

The greenhouse gases are carbon dioxide, methane, and nitrous oxide.

The greenhouse effect has been defined as the entrapment of the sun's energy by the gases that result in the earth becoming warmer and a better place to live.

The gases present in the atmosphere that has been able to entrap the heat energy has been termed the greenhouse gases.

The greenhouse gases have been carbon dioxide, methane, and nitrous oxide.

For more information about  greenhouse gases, refer to the link:

https://brainly.com/question/11595872

Answer:

carbon dioxide, nitrous oxide, methane

Explanation:

State of Matter refers to _______.

Answers

Answer:

matter refers to anything that has mass and volume which occupies space

PLZ HELP?! 50 points

Write the correct IUPAC name for the following compound

Answers

Answer:

2-ethly-3-5 dimethylheptam

Explanation:

trust meeeeee

Why are earthworms called as “friends of farmers”? Answer in no less than 4 sentences

Answers

Answer:

Organic matter composted with earthworms, often known as vermicompost, has been demonstrated in studies to have disease-suppressing qualities. The earthworms loosen the soil and enrich it with humus. As a result, they are known as farmer's pals. They help the crops grow healthier and over the time have earned farmers trust.

Explanation:

Hope this helps in some way!

Other Questions
HELPPP!! DUE NOWWWW!Lucy recently joined a fitness club, she had to pay an initial fee to join. Lucy will also pay an extra fee per class she takes there. The equation below represents the relationship.f(x)=20+3xIdentify the false statementA. Lucy paid $3 per class.B. f(x) represents the total amount Lucy paid.C. x represents the cost of classes.D. The initial fee was $20 give a pair of alternate interior angles, a pair of corresponding angles and a pair of alternate exterior angles. ME Project- Decomposer Decomposer: (breaks down dead matter) 17. The common name of my organism is: Select the correct answer.Which expression is equivalent to the difference shown?5/m - m+8/ m^2-4m 6. Rachael is married with 2 dependents. Her salary as a dental hygienist is $47,650 paidin 26 pay periods. Find the state tax withheld per pay period. EASY 25 POINTSPlease help me with this math problem it is due tomorrow. How was technology, and theenvironment transformed by industrialization? This scatter plot shows the number of baskets made and the time in minutes that has passed.Based on the information in the scatter plot, what is the best prediction for the number of baskets made in 16 minutes?4 baskets7 baskets14 baskets20 baskets PLEASE HELP!! With explanation/solution please!! the tree are being cut down into actve voice Choose the best response to the following question. Which of the following is NOT a direction expression.lloin deune ceintureen bas How was your weekend? What did you do? Please write sentences or more. what was the main reason tanks were introduced during world war i? Help me please ****** How many years is it in college for both botany, cooking, and mechanic's together? A. identify B. existence C. scientist D. appearance The two different types of WHMIS 2015 labels used in the workplace are supplier labels and workplace labels. true/false? Which purpose did the Iroquois League serve?a to elect leaders for the nations of the Great Plainsb to break down trade barriers among Indian nationsc to bring independent nations together for mutual defense and common concernsd to protect Indian nations from attack by Europeans Question 10 of 20 :Select the best answer for the question10. What is the purpose of the introduction in an essay?A. To focus on current statisticsB. To highlight the most important conceptsC. To explain the main idea to the readerD. To establish the main idea of the essay how did the automobile impact education?