What are the geometrical shape of BeCl2 and CO2?​

Answers

Answer 1

Answer:Answer: BeCl2 And CO2 Both Molecules Have The Same - OOOOOOO Molecular Geometry (molecular Shape) Number Of Covalent Bonds To The Central Atom Total Number Of Each Type Of Bond (single, Double, Triple) Number Of Electron Pairs Around The Central Atom Electron Region Geometry (3-D Arrangement Of Electron Pair Regions

Explanation:


Related Questions

What mass of octane (in g) is required to produce 8210 kJ of heat?

Answers

Answer:

184.8 g

Explanation:

Step 1: Write the balanced thermochemical equation

C₈H₁₈(l) + 25/2 O₂(g) ⇒ 8 CO₂(g) + 9 H₂O(g)   ΔH°rxn = -5074.1 kJ

Step 2: Calculate the moles of octane required to produce 8210 kJ of heat

According to the thermochemical equation, 5074.1 kJ of heat are released per mole of octane consumed.

-8210 kJ × 1 mol C₈H₁₈/(-5074.1 kJ) = 1.618 mol

Step 3: Calculate the mass corresponding to 1.618 moles of octane

The molar mass of C₈H₁₈ is 114.23 g/mol.

1.618 mol × 114.23 g/mol = 184.8 g

1mol produces=5074.1KJ heat .

Moles produce 8210 KJ heat :-

8210/5074.1=1.62mol

Molar mass of Octane :-

8(12)+18=96+18=114g/mol

Mass of Octane=

1.62(114)=184.7g

How would you prepare stable polymers from formaldehyde?

Answers

Answer:

The mechanical properties of urea formaldehyde resins may be improved by incorporating therein polyvinyl alcohol. The polyvinyl alcohol may be incorporated during pre-mixing, mid mixing, and/or post mixing of the resin components. Resins prepared using polyvinyl alcohol are particularly desirable in articles requiring improved mechanical strength and water resistance, as compared to similar resins prepared without the polyvinyl alcohol such as shingles.

Complete the following road map for converting volume of A to volume of B for a titration of aqueous solution A with aqueous solution B.

a. multiply by the molarity of B
b. multiply by the moles of B per moles of A
c. divide by the molarity of B
d. multiply by the molarity of A
e. divide by the molarity of A
f. multiply by the moles of A per moles of B

1. volume A (L)
2. moles A
3. moles B
4. volume B (L)

Answers

Answer:

Explanation:

The solution of known concentration is expressed as molarity. Molarity is the mole fraction of solute (i.e. the dissolved substance) per liter of the solution, Molarity is also commonly called molar concentration.

Mathematically;

[tex]\mathtt{Molarity = \dfrac{moles \ of \ solute}{ liters \ of \ solution}}[/tex]

To copy and complete the road map from the given question, we have the following array:

      Volume A (L)

               ↓

d. multiplied by the molarity of A

               ↓

          moles A

               ↓

b. multiplied by the moles of B / moles of A

               ↓

         moles B

               ↓

c. divided by the molarity of B

               ↓

        volume B (L)

how has society influenced our opinions on lithium mining​

Answers

Answer:

LIBs have had a huge impact on our society. They enabled modern portable electronics such as laptops and mobile phones. And they are now enabling clean and low-carbon transport, be it via electric cars or even flying taxis, and grid-scale storage of renewable energy

Explanation:

If you keep adding sugar to water and there comes a point that you cannot dissolve any more sugar to it then this is called

Answers

Answer:

.

Explanation:

write the formula
sodium ion

Answers

Answer:

NA+

Explanation:

NA+

hope help

it's NA+

Write the formula of sodium ion.

[tex]\implies {\blue {\boxed {\boxed {\purple {\sf { {Na}^{ + } }}}}}}[/tex]

[tex]\bold{ \green{ \star{ \orange{Mystique35}}}}⋆[/tex]

Which of the following is the correct Lewis dot structure of c4?

Answers

Answer: B

Explanation:

Which of these increases the friction of someone walking on the floor?

Answers

Answer:

.This is because gravity pulls down harder on the heavier one, which increases its friction with the floor

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9) Give the set of four quantum numbers that could represent the extra electron added (using the Aufbau principle) to the neutral Ne atom.
10) Which 2nd period element has the most negative electron affinity? Why? Bonus questions
11) Which ionization process requires the most energy? Why?
A) Se(g) → Set(g) + e-
B) Set(g) Se2+(g) +
C) Br(g) → Brt(g) + e-
D) Brt(g) Br2+(g) + e-
12) Place the following in order of decreasing metallic character. Explain your reason.
P As K

Answers

Answer:

See explanation

Explanation:

9) If an extra electron is added to the neon atom, then the electronic configuration becomes; 1s2 2s2 2p6 3s1

This last electron has quantum numbers;

n=3, l=0, m=0 and s = +1/2

This is so because the 2s level is already filled so the extra electron must go into the 3s level. The orbital quantum number and the magnetic quantum number for the s orbital is zero.

10) Electron affinity is the energy released when one mole of gaseous atoms accept one mole of gaseous electrons to form one mole of gaseous ions having a negative charge.

In the second period, fluorine has the greatest electron affinity since electron affinity increases across the period. The noble gas, neon has an electron affinity of 0KJ/mol.

11) Ionization energy decreases down the group but increases across the period due to increase in the size of the nuclear charge and decrease in the distance between the nucleus and the outermost electron. Hence, the process; Br+(g) ---->Br2+(g) + e- has the greatest ionization energy. Recall that the second ionization is always higher than the first ionization energy.

12)The order of decreasing metallic character here is K> As> P. Even though As and P belong to the same group, we must note that metallic character increases down the group hence the order written above.

How many atoms are in 2.32 mol2.32 mol of copper?

Answers

Answer:

since 1 mole = 6.022×10^23

hence in 2.32 moles no. of atoms= 6.022×10^23 × 2.32

=

13.97104 ×10^23

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What is the mass of 2.7 L of water?

Answers

2.69 kilograms this is what it should be

A tank at is filled with of sulfur tetrafluoride gas and of sulfur hexafluoride gas. You can assume both gases behave as ideal gases under these conditions. Calculate the mole fraction of each gas. Round each of your answers to significant digits.

Answers

The question is incomplete, the complete question is:

A 7.00 L tank at [tex]21.4^oC[/tex] is filled with 5.43 g of sulfur hexafluoride gas and 14.2 g of sulfur tetrafluoride gas. You can assume both gases behave as ideal gases under these conditions. Calculate the mole fraction and partial pressure of each gas. Round each of your answers to significant digits.

Answer: The mole fraction of sulfur hexafluoride is 0.221 and that of sulfur tetrafluoride is 0.779

Explanation:

The number of moles is defined as the ratio of the mass of a substance to its molar mass.  The equation used is:

[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}[/tex] ......(1)

For sulfur hexafluoride:

Given mass of sulfur hexafluoride = 5.43 g

Molar mass of sulfur hexafluoride = 146.06 g/mol

Putting values in equation 1, we get:

[tex]\text{Moles of sulfur hexafluoride}=\frac{5.43g}{146.06g/mol}=0.0372mol[/tex]

For sulfur tetrafluoride:

Given mass of sulfur tetrafluoride = 14.2 g

Molar mass of sulfur tetrafluoride = 108.07 g/mol

Putting values in equation 1, we get:

[tex]\text{Moles of sulfur tetrafluoride }=\frac{14.2g}{108.07g/mol}=0.1314mol[/tex]

Total moles of gas in the tank = [0.0372+ 0.1314] mol = 0.1686 mol

Mole fraction is defined as the moles of a component present in the total moles of a solution. It is given by the equation:

[tex]\chi_A=\frac{n_A}{n_A+n_B}[/tex] .....(2)

where n is the number of moles

Putting values in equation 2, we get:

[tex]\chi_{SF_6}=\frac{0.0372}{0.1686}=0.221[/tex]

[tex]\chi_{SF_4}=\frac{0.1314}{0.1686}=0.779[/tex]

Hence, the mole fraction of sulfur hexafluoride is 0.221 and that of sulfur tetrafluoride is 0.779

which is a characteristic of oxygen​

Answers

Answer:

Characteristics of oxygen are as follows:

In normal conditions oxygen is a colourless, odourless and insipid gas.It condensates in a light blue liquid.Oxygen is part of a small group of gasses literally paramagnetic and it's the most paramagnetic of all.Liquid oxygen is also slightly paramagnetic.

¿Cómo se divide la tecnología?
de te

Answers

Answer:

còmo supòtànté insígídà pàtàtàk

explain why seeing a gas doesn not always indicate that there was a chemical change. ​

Answers

A change of state (which is a physical change) can cause gas.

Question 11

1 pts

A solution is formed by dissolving 45 grams of NH4Cl in

100 grams of H20 at 70°C. Which statement correctly

describes this solution?

O NH4Cl is the solute, and the solution is saturated.

O NH4Cl is the solute, and the solution is unsaturated.

o NH4Cl is the solvent, and the solution is unsaturated.

O NH4Cl is the solvent, and the solution is saturated.

< Previous

Answers

Answer:

NH4Cl is the solute, and the solution is unsaturated.

Explanation:

To create a saturated solution of ammonium chloride at 70°C, we need to dissolve 62 g of ammonium chloride in 100 g of water.

The question tells us that 45 grams of NH4Cl was dissolved in 100 grams of H20 at 70°C. This creates an unsaturated solution since the amount of solute present is less than the amount of solute that the NH4Cl solution can normally hold at 70°C.

Hence, NH4Cl is the solute, and the solution is unsaturated.

Bacteria and archaea carry out the process of nitrogen fixation, which reduces atmospheric nitrogen, N2, to the biologically useful form NH3, also called ammonia. The nitrogenase complex consists of two proteins, reductase and nitrogenase, which catalyze the reactions of nitrogen fixation. Match each structural feature or function with the corresponding component of the nitrogenase complex.

a. also called the molybdenum—iron protein, or the MoFe protein
b. transfers electrons from a donor, such as frrredoxin, to the other component.
c. Homodimer
d. Heterotetramer

1. Reductase
2. Nitrogenase

Answers

Answer:

a. Nitrogenase

b. Reductase

c. Reductase

d. Nitrogenase

Explanation:

Reductase is a enzyme which promotes chemical reduction for a substance. It is also known as iron protein as iron is main component in reductase. Nitrogenase are molybdenum because they sulfur as co factor

HELP ME PLZ AND THANKS I WILL MARK YOU AS BRAINLIEST!!!

Answers

Answer:

i think formula is PV=K?

Explanation:

Describe what happens between the valence electrons in an Ionic Bond.

How is that different from a covalent bond?

Answers

Answer:

In an ionic bond, the elctrons are transferred. For example, NaCl has an ionic bond because Na loses an electron and the Cl atom gains the electron. However in a covalent bond, the electrons are shared equally. Covalent bonds usually occur between two nonmetals.

Explanation:

HELP ASAP!! if given the following balanced equation, circle one of the following calculations that shows how to correctly determine the amount of CO2 gas (in moles) that will be produced if you start with 6 moles of calcium carbonate CaCO3

Answers

Answer:

The answer is B.

Explanation:

Identify each of the following sets of quantum numbers as allowed or not allowed in the hydrogen atom.

a. n=3 , l= 2 , ml =2
b. n=4 , l= 3 , ml =4
c. n=0 , l= 0 , mb =0
d. n=2 , l= 1 , mb =1

Answers

Answer:

See explanation.

Explanation:

Hello there!

In this case, according to the given information, it turns out possible for us to firstly recall the electron configuration of hydrogen:

[tex]1s^1[/tex]

To realize that the principal quantum number is 1, the angular is 0 as well as the magnetic one; therefore we infer that all the given n's are not allowed, just l=0 is allowed as well as ml=0 yet the rest, are not allowed.

Best regards!

A TLC plate showed 2 spots with Rf values of 0.25 and 0.26. The plate was removed from the developing chamber, the residual solvent was allowed to evaporate from the plate, and then the plate was returned to the developing chamber. What would you expect to see after the second development was complete

Answers

Answer:

See explanation

Explanation:

TLC is a chromatographic method in which the solute is spotted on a plate and the plate is placed in an air tight chamber containing a solvent. The solvent is maintained below the level of the spot. The capillary movement of the solvent through the plate achieves the required separation.

If two spots have Rf values of 0.25 and 0.26 respectively and then the plate was removed from the developing chamber, subsequently, the residual solvent was allowed to evaporate from the plate, and then the plate was returned to the developing chamber.

It will be observed after the second development is complete that the new Rf values will be 0.50 and 0.52 respectively. It will just be as though the second chromatogram picked up from where the first chromatogram stopped.

Molybdenum (Mo) crystallizes with a body-centered cubic lattice and has an atomic radius of 136.1 pm.

a. Calculate the density of molybdenum in g/cm^3. Show all work. Include units with all numbers and show how units cancel.
b. Calculate the density of molybdenum in g/cm^3

Answers

it’s x200 plus 300 that’s why it is that answer

Name the following ketone:
A. 2,3,5,6-tetraethyl-4-octanal
B. 2,3,5,6-tetramethyl-4-octanone
C. 2,3,5,6-tetramethyl-4-octaketone

Answers

Answer:

it is b step by step

Explanation:

The naming of this compound is 2,3,5,6 tetramethyl-4-octane.

Hence, option (B) is correct answer.

What is Ketone ?    

A ketone is functional group which contains the carbonyl group that is -C = O. The structure for ketone is R¹ - C = O - R² where and are alkyl group or aryl group.

How to naming a compound ?First we have to find the longest continuous carbon chain. Then identify and start naming the functional groups attached to the chain. Starting the numbering of a compound which is starting at the end nearest a group.

Here we can see that the longest carbon chain is Octane. And the functional group is here ketone so suffix is -one. Now starting the number from the left hand side. We can see that on 2, 3,5,6 positions methyl group is attached in this chain. On 4th position ketone group is attached.

So the naming of the ketone is 2,3,5,6 tetramethyl-4-octane.

Thus, from above conclusion we can say that the naming of this compound is 2,3,5,6 tetramethyl-4-octane.

Hence, option (B) is correct answer.

Learn more about the Ketone function group here: https://brainly.com/question/27425066

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Arrange the forms of electromagnetic radiation in order of decreasing energy (from highest energy to lowest energy). You are currently in a ranking module. Turn off browse mode or quick nav, Tab to move, Space or Enter to pick up, Tab to move items between bins, Arrow Keys to change the order of items, Space or Enter to drop.
highest energy lowest energy
radio waves
x rays
gamma rays
infrared
microwaves
ultraviolet
visible

Answers

Answer:

gamma rays > X-rays > ultraviolet radiation > visible light > infrared > radio waves.

Explanation:

Electromagnetic waves are those waves that require no material medium for propagation. They can travel through space and they all move at the speed of light.

Electromagnetic waves are composed of both electric and magnetic fields which are mutually at right angles to each other.

The order of decreasing energy of electromagnetic waves is;

gamma rays > X-rays > ultraviolet radiation > visible light > infrared > radio waves.

A cell is placed into a 1 millimolar solution of substance X. Over time you witness the concentration of X inside the cell increase to 5 millimolar. Describes the movement of substance X?

Answers

Answer:

X is moving into the cell by active transport

Explanation:

According to Oxford dictionary;active transport refers to ''the movement of ions or molecules across a cell membrane into a region of higher concentration, assisted by enzymes and requiring energy''.

Since the concentration of X is higher inside the cell than it is outside the cell, energy must be required in order to move substance X across the cell membrane against existing concentration gradient. This process is called active transport.

An aqueous solution was created by placing 0.018 g of NaCl into a 50 mL volumetric flask and diluting to volume with deionized water. (Because the amount of solute is small, you may assume that the volume & density of the solution is equal to the volume & density of the solvent where appropriate.)Find the concentration in terms of the following units. Report your answers without scientific notation.Only input numbers. Your answers must be expressed to the correct number of significant figures. Any values less than one must have a zero in front of the decimal (e.g. 0.01 not .01)Molarity (M): Molality (m):Mole fraction of NaCl (X):Mass % of NaCl:

Answers

Answer:

Molarity: 6.2x10⁻³M NaCl

Molality: 6.2x10⁻³m NaCl

Mole Fraction: 1.1x10⁻⁴

Mass% NaCl: 0.036% (m/m NaCl)

Explanation:

Molarity -Moles NaCl / L-

Moles NaCl -Molar mass: 58.44g/mol-

0.018g * (1mol/58.44g) = 0.000308 moles NaCl

Liters water:

50mL * (1L/1000mL) = 0.050L

M = 0.000308 moles NaCl / 0.050L

M = 6.2x10⁻³M NaCl

Molality -Moles NaCl / kg water-

Moles NaCl = 0.000308 moles NaCl

kg water = 50mL * (1g/mL) * (1kg/1000g) = 0.050kg

m = 0.000308 moles NaCl / 0.050kg

m = 6.2x10⁻³m NaCl

Mole Fraction -Moles NaCl / Moles water+ Moles NaCl-

Moles water = 50g * (1mol/18.01g) = 2.776 moles

Moles fraction = 0.000308 moles NaCl / 0.000308 moles NaCl + 2.776moles water

Mole fraction = 1.1x10⁻⁴

Mass Percent -Mass NaCl / Mass NaCl+Mass Water * 100

0.018g / 50g+0.018g * 100

0.036% (m/m NaCl)

Write a balanced equation for the combination reaction described, using the smallest possible integer coefficients. When methane (CH4) combines with carbon tetrachloride , dichloromethane (CH2Cl2) is formed.

Answers

Answer:

C H₄ + C Cl₄ = 2 (C H₂ Cl₂)

‎‎‎‎‎‎‎‎‎

You have a sample of gold that contains 0.2 moles of gold (Au). How many gold atoms are present in the sample. HINT: Gold atoms represents the number of particles."

1.20 x 10^23 atoms

3.3 x 10^-25 atoms

1.01 x 10^-3 moles

Answers

BEST ANSWER IS

have a great summer

1.01 x 10^-3 moles

Given:

n = 0.20 mol

Required:

N

Solution:

N = n × 6.02 × 10²³ atoms/mol

N = 0.2 mol × 6.02 × 10²³ atoms/mol

N = 1.20 × 10²³ atoms

Therefore, there are 1.20 × 10²³ gold atoms in 0.2 mol of a gold sample.

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What is the pH of a 1.7 × 10⁻⁴ M HClO₄ solution?

Answers

Ph= -log[h30]

Ph= -log[1.7x10^-4]

pH= 3.77

pH is acidic
Other Questions
Match these terms with their descriptions Which of the folloing pairs consists of equivalent fractions? .4/6 and 3/5 or 9/16 and 3/32 or 18/48 and 15/40 or 7/10 and 10/7 Engineers design a system for heating the air in a house. They want theheater to bring the temperature to a comfortable level and then maintain it.Which option describes how the engineers should design the system?O A. Include a control in the system that senses the air temperatureand causes negative feedback, reducing the output of the heater.O B. Design the system with a control that maintains a constant level ofoutput from the heater.C. Include a control in the system that varies the input level in aregular cycle.Design the system with a control that allows positive feedback toenhance the heating ability of the system, Jeans are on sale for 20% off the regular price. Which function would give you the total cost for purchasing a pair of jeans that costs x dollars? PLEASE HELP ASAP ILL MAKE BRAINLIEST The table shows how many coins are in Joshuas coin jar.Joshua intends to blindly reach in to the coin jar, pull out the first coin he touches, record its value, and replace it. He will select a coin 50 times. Set aside the different coin sizes, and assume the size of the coin does not impact his ability to select it.Enter the number of times a dime is expected to be pulled from the jar. Silicon is in the same group of the Periodic Table as carbon. The compoundformed between silicon and hydrogen is likely to have the formulaSiHzSiHSizH:SizHsPlease hurry Calculate the percentage of water of crystallisation in MgSO 7HO Decide whether each statement is true or false.You are less likely to roll a 3 than a 4 on a die.TrueFalse(I'm not good with probability..) Which two revolution inpired latin American countries to declare their independence from Spain write a letter to tell your friend that you are in class four I NEEEEED HELP!!!!!! During the Gilded Age, the majority of immigrants to the United States moved to give me one secondddd.. Are you sure its dPlz tell me Speaker 1: Now that we are independent, Americans should create agovernment that mirrors the government of Great Britain.Speaker 2: After experiencing the tyranny of Great Britain, Americansknow how important it is to limit the government's power.Speaker 3: Our victory in the Revolutionary War proved that Americanshave the wisdom to choose good leaders.Speaker 4: As former colonies, the American states are likely to thriveunder a system of strong centralized government.Which speaker iS most likely a Federalist? MATH PROBLEM 20 POINTS Suppose a commercial banking system has $40,000 of outstanding checkable deposits and actual reserves of $4,500. If the reserve ratio is 10 percent, the banking system can expand the supply of money by the maximum amount of There are 24 chairs in a room numbered 1 through 24. If nine girls and 15 boys sit on these chairs at random, what is the probability that the thirteenth chair is occupied by a boy? Here are the city gas mileages for 13 different midsized cars in 2008. 16, 15, 22, 21, 24, 19, 20, 20, 21, 27 , 18 , 21 , 48 What is the minimum ? Summer 20 Corp estimates overhead based on direct labor hours and has given you the following information: Estimated Manufacturing Overhead Costs 2020 $405,000 Estimated Direct Labor Hours for 2020 220,000 Actual Direct Labor Hours for 2020 202,000 Manufacturing Overhead Account Debit Entries total $380,000 1. Determine the predetermined overhead allocation rate stated with cents. 2. Determine the amount of manufacturing overhead that was allocated. 3. Calculate the amount Summer 20 Corp is over or under allocated during the year.