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Pleaseee PLEASEEE PLEASEEE I NEED HELPPP!! Can Someone Do These For Me I Will Give Brainliest

Answers

Answer 1
1. 116mol
2. 40atm
3. 627C

Related Questions

Find the molecular formula of ethylene glycol, used in antifreeze, if its empirical formula is CH3O and its molar mass is 62 g/mol.

Answers

The molecular formula of the ethylene glycol is C₂H₆O₂.

From the question given above, the following data were obtained:

Empirical formula = CH₃O Molar mass of compound = 62 g/mol Molecular formula =?

Molecular formula = empirical × n = molar mass

[CH₃O]n = 62

[12 + (3×1) + 16]n = 62

31n = 62

Divide both side by 31

n = 62 / 31

n = 2

Molecular formula = [CH₃O]n

Molecular formula = [CH₃O]₂

Molecular formula = C₂H₆O₂

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I know the answer is A/1 but I’m not sure how to explain it, I would like some help on the explanation part

3. The accompanying diagram represents a cell in water. Formulas of molecules that can move freely across the cell membrane are shown. Some molecules are located inside the cell and others are in the water outside the cell.



(Picture) diagram



Based on the distribution of these molecules, what would most likely happen after a period of time?

A. The concentration of O₂ will increase inside the cell.

B. The concentration of CO₂ will remain the same inside the cell.

C. The concentration of O₂ will remain the same outside the cell.

D. The concentration of CO₂ will decrease outside the cell.

Answers

Answer:

number one is the correct option

Fill in the blanks:
87 pg = [? ]x10^[?]g

Answers

87 picograms are equivalent to [tex]8.7\times 10^{-11}[/tex] grams.

This is a unit problem, in which a derived unit must translated into a fundamental unit. A picogram is a equivalent to a trillionth of a gram, which is the fundamental SI mass unit. Mathematically speaking, we have the following equivalence:

[tex]1\,pg = 1\times 10^{-12}\,g[/tex]

Now we proceed to find the equivalent value for this case:

[tex]87\,pg[/tex]

[tex]87\times 10^{-12}\,g[/tex]

[tex]8.7\times 10^{-11}\,g[/tex]

87 picograms are equivalent to [tex]8.7\times 10^{-11}[/tex] grams.

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explain why nitrogen diffuses faster than clorine

Answers

due to the fact nitrogen diffuses faster than chlorine nitrogen has insures called co2 which implodes the chlorine which leads to nitrogen having a faster diffusion

A glacier can travel over the surface of Earth and reshape it. The chart describes three things a glacier can do.

Glacial Actions:
1. breaks large rocks into smaller ones
2. pushes broken rocks ahead of itself
3. leaves broken rocks behind when the front edge melts

Which terms BEST describe these glacial actions in the order as presented?

a. weathering, erosion, deposition

b. erosion, chemical weathering, deposition

c. deposition, weathering, erosion

d. chemical weathering, mechanical weathering, erosion

Answers

Answer:

A

Explanation:

why do i have white spots on my teeth after brushing?

Answers

Fluorosis: Fluorosis can cause white spots due to exposure to excessive fluoride

Butane (C4 H10(g), Delta. Hf = â€"125. 6 kJ/mol) reacts with oxygen to produce carbon dioxide (CO2 , Delta. Hf = â€"393. 5 kJ/mol ) and water (H2 O, Delta. Hf = â€"241. 82 kJ/mol) according to the equation below. 2 upper C subscript 4 upper H subscript 10 (g) plus 13 upper o subscript 2 (g) right arrow 8 upper C upper O subscript 2 (g 0 plus 10 upper H subscript 2 upper O (g). What is the enthalpy of combustion (per mole) of C4H10 (g)? Use Delta H r x n equals the sum of delta H f of all the products minus the sum of delta H f of all the reactants. â€"2,657. 5 kJ/mol â€"5315. 0 kJ/mol â€"509. 7 kJ/mol â€"254. 8 kJ/mol.

Answers

The enthalpy of this reaction is -5315 KJ/mol.

The equation of the reaction is;

2C4H10(g) + 13O2(g) -----> 8CO2 (g) + 10H2O(g)

We know that the enthalpy of reaction can be obtained from the enthalpy of formation of the reactants and products as follows;

ΔHrxn = ΔHf(products) - ΔHf(reactants)

We have the following information from the question;

ΔHf C4H10 = - 125. 6 kJ/mol

ΔHf CO2 = - 393. 5 kJ/mol

ΔHf H2O = - 241. 82 kJ/mol

ΔHf O2 = 0 KJ/mol

Hence;

[(8 × (- 393. 5 )) + (10 × (-  241. 82))] - [2( - 125. 6))]

= -5315 KJ/mol

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Which dosage form is a semisolid preparation that contains very small solid particles that are suspended in a liquid

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A GEL is a semisolid preparation that contains very small solid particles that are suspended in a liquid. A gel always contains an agent (e.g., agarose) that provides stiffness to the preparation.

A gel is a semisolid preparation that contains a gelling agent which provides stiffness to the preparation.

The gelling agent can be, for example, agarose (this gelling agent is used to prepare gels in electrophoresis).

In an agarose gel, agarose molecules are organized into three-dimensional (3D) structures similar to pores, which allow the passage of DNA fragments during electrophoresis.

Learn more about agarose gel here:

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What are some examples of a chemical change? (list more than 2 examples)

Answers

Cooking any food.

Burning of wood.

Digestion of food.

Acid-base reaction.

Chemical batteries, Digestion, Photosynthesis, Cooking food

2.Photosynthesis and combustion of coal are two chemical reaction taking place.How can you describe both reactions on the basis of energy transfer?

Answers

they consist of co2 and h2o

Calculate the energy of a proton of light with a frequency of 8.5x1014 Hz.

Answers

Answer:

[tex] \huge{5.632 \times {10}^{ - 19} \: J}[/tex]

Explanation:

The energy of the proton can be found by using the formula

E = hf

where

E is the energy in J

f is the frequency in Hz

h is the Planck's constant which is

6.626 × 10-³⁴ Js

From the question we have

E = 6.626 × 10-³⁴ × 8.5 × 10¹⁴

We have the final answer as

[tex]5.632 \times {10}^{ - 19} \:J[/tex]

Hope this helps you

What is a trial? please​

Answers

examination by a test; experiment, as in chemistry, metallurgy, etc.

which of the following is the most dangerous type of radiation?

gamma decay, alpha decay, beta, decay, they are all equally dangerous

Answers

Answer:

gamma decay

Explanation:

gamma rays have the highest frequency on the EM spectrum, which makes them the most dangerous.

In the conclusion to the snake mole lab, you have to convert 3.45 moles of (NH4)2S04 to
grams. What is the molar mass of (NH4)2504?

Answers

Molar mass = 132.14g/mol

Identify the limiting reactant when 9.65-g H2SO4 reacts with 6.10-g of NaOH.

Answers

Answer:

3.56

Explanation:

How did the atomic model change due to the research of thomson, rutherford, and bohr?

Answers

Answer:

Thomson's plum pudding model of the atom had negatively-charged electrons embedded within a positively-charged "soup." Rutherford's gold foil experiment showed that the atom is mostly empty space with a tiny, dense, positively-charged nucleus. Based on these results, Rutherford proposed the nuclear model of the atom.

PLEASE HELP QUICK I NEED 14-16 (JUST 6 PROBLEMS) ANSWERED AND FULL WORK SHOWN FOR FACTOR LABEL METHOD ITS 100 POINTS AND I WILL MARK BRAINLYEST. ​

Answers

Answer:

14. 21.51 liters

15. 12.9 centimeters

16. 3400 milliliters

Explanation:

I don't really know how to show the work

which acid is part of the white coating on sour patch kids?

Answers

Tartaric acid is the white, powdery substance that coats tart candies such as Sour Patch Kids. COmbustion analysis of a 12.01g sample of tartaric aid, which contains carbon, hydrogen and oxygen, produces 14.08g CO2 and 4.32g

H2O.

i would know because i have see what there made of

Which of these codes is best for creating websites?

Answers

The most used codes for the creation of websites are CSS and HTML.

What is a code?

A code can be defined as the basic unit that composes a website. This implies that by using a code you can create a website from scratch and by the end of the process you should have a functional and complete website.

What codes are used?

In website creation, the most common codes are  CSS and HTML.

HTML: This is the most common code used and also one of the easiest to understand and use.

CSS: This code is not as popular as HTML but it is still a very popular code used by many people creating websites.

Note: This question is incomplete because the options are not given; due to this, I answered it based on general knowledge.

Learn more about websites in: https://brainly.com/question/1631583?referrer=searchResults

How many molecules does 1 mole of Oz gas have?

Answers

awnser : 6.02×1023 molcules

Answer: One mole of oxygen gas, which has the formula O2, has a mass of 32 g and contains 6.02 X 1023 molecules of oxygen but 12.04 X 1023 (2 X 6.02 X 1023) atoms, because each molecule of oxygen contains two oxygen atoms

What role does each type of chemical play in the firework

Answers

Answer:  Antimony: Antimony is used to create firework glitter effects. Barium: Barium is used to create green colors in fireworks,

Explanation:

Answer:

Explanation:Antimony: Antimony is used to create firework glitter effects. Barium: Barium is used to create green colors in fireworks, 

 A car has a displacement of 480 km to the east in eight hours. What is its velocity in kilometers per hour?

Answers

Displacement = 480 KmTime = 8 hoursWe know, velocity = [tex] \sf \frac{displacement}{time} [/tex]Therefore, the velocity of the car

[tex] \sf = \frac{480}{8} = 60[/tex]

Answer:

The velocity of the car is 60 Km/hour to the east.

Hope you could get an idea from here.

Doubt clarification - use comment section.

what object has a mass of 10 grams and a volume of 2 mL

Answers

Answer:

Destiny = 5 g/ml

Explanation:

The formula for density is d=

Knowing this, divide your mass by volume:

10 g / 2 ml = 5 g/ml

Final answer:

Destiny = 5 g/ml

Fast pls due rn help fast pls

Answers

Answer:

Section a:

1. stratosphere

2. radio waves

3. nitrogen, oxygen

4. humidity

5. smoke, fog

Section b:

1. ozone layer

2. stratosphere

3. carbon dioxide (CO2)

4. smoke

5. tropical areas

Section c:

1. false, it is clear

Hope those help and are all correct

5 Stoichiometry Chemistry questions !



1. Determine the mass in grams of lithium hydroxide produced when 0.38 g of lithium nitride reacts. g LiOH

Li3N(s) + 3 H2O(l) --> NH3(g) + 3 LiOH(aq)


2. How many moles of sodium chloride are produced when 2.9 grams of sodium iodide reacts? mol NaCl

2 NaI(s) + Cl2(g) --> 2 NaCl(s) + I2(g)


3. What volume in liters of chlorine gas at STP would be required to fully react with 125 g of NaI? L Cl2

2 NaI(s) + Cl2(g) --> 2 NaCl(s) + I2(g)


4. Determine the volume in liters of carbon dioxide produced at STP when 0.85 grams of butane (C4H10) reacts. L CO2

2 C4H10(l) + 13 O2(g) --> 8 CO2(g) + 10 H2O(g)


5. Calculate the mass in grams of water vapor produced by the combustion of 51.3 L of propane, C3H8, at STP. g H2O

C3H8(g) + 5 O2(g) --> 3 CO2(g) + 4 H2O(g)

Answers

Yea yea that’s what I mean it just depends what the people like

What type of reaction takes place when using this enzyme (endergonic or exergonic)?
lactase is the enzyme

Answers

Answer:

we do the best possible in our

how does one determine a molecular formula from the epirical formula

Answers

Answer:

C

Explanation:

Most stars are part of the main sequence of stars in the HR diagram

Question 2 options:
True
False

Answers

I’m pretty sure that the answer is true

Answer the following questions.
P1) Matching.
Complete the table with the data from the lab. First, calculate and enter the mole ratio in the chart, then enter the volumes of the precipitates.

Answers

The mole ratio can be seen below and the volume of each precipitate is 60 mL.

A mole ratio refers to a conversion factor that compares the quantities of two chemicals in moles in a chemical laboratory experiment.

Mole ratio For 1:

= 10 mL : 50 mL= 1 : 5 mL

Mole ratio For 2:

15 mL : 45 mL= 1 : 3 mL

Mole ratio For 3:

20 mL : 40 mL1 : 2 mL

Mole ratio For 4:

30 mL : 30 mL1 mL : 1 mL

Mole ratio For 5:

40 mL : 20 mL2 : 1 mL

Mole ratio For 6:

45 mL : 15 mL3 : 1 mL

Mole ratio For 7:

50 mL : 10 mL5 : 1 mL

Since the parameters from the left side of the diagram are not shown, we will assume that the volumes for each precipitate are the addition of both volumes in each column.

By doing so, we have:

1.

(10 +50) mL = 60 mL

2.

(15 + 45) mL = 60 mL

3.

(20 + 40)mL = 60 mL

4.

(30 + 30) mL = 60 mL

5.

(40 + 20)mL = 60 mL

6.

(45 + 15) mL = 60 mL

7.

(50 + 10)mL = 60 mL

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When heat is being transferred away from a substance, the resulting phase change graph is known as a ____ curve.

a. Cooling

B. Heating ​

Answers

collinf is answerrrrrr
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