Be sure to answer all parts. Given that syn addition of H2 occurs from both sides of a trigonal planar double bond, draw all stereoisomers formed when the compound is treated with H2. draw structure ... trans isomer draw structure ... cis isomer

Answer:

Total amount of alum lost = 0.5122 grams

Explanation:

Let the total volume of the solution be 100 mL

In 100 mL of solution, there is 2.63 gram of alum.

Out of this 100 mL solution, 42.5 mL is remaining.

Amount of alum in 42.5 mL solution is

[tex]\frac{42.5}{100} * 2.63 = 1.117\\[/tex] grams

Now the amount of alum lost is [tex]2.63 -1.117 = 0.5122[/tex] grams

Answer:

see note under explanation

Explanation:

When describing system and surroundings the system is typically defined as the 'object of interest' being studied and surroundings 'everything else'. In thermodynamics heat flow is typically defined as endothermic or exothermic. However, one should realize that the terms endothermic and exothermic are in reference to the 'system' or object of interest being studied. For example if heat is transferred from a warm object to a cooler object it is imperative that the system be defined 1st. So, with that, assume the system is a warm metal cylinder being added into cooler water. When describing heat flow then the process is exothermic with respect to the metal cylinder (the system) but endothermic to the water and surroundings (everything else).

Answer:

a. Clay

b. Sandy Loam

c. Sandy Clay

d. Loamy Sand

Explanation:

Based on the soil texture triangle, the soil texture for the following combination of sand, silt and clay are;

a. Sand 20 percent; Silt 20 percent;Clay 60 percent: ____ CLAY

b. Sand 60percent; Silt 30percent; Clay 10percent: ___ SANDY LOAM

c. Sand 50percent; Silt 10percent;Clay 40 percent: ____ SANDY CLAY

d. Sand 80 percent; Silt 15 percent; Clay 5percent:_____ LOAMY SAND

Answer:

The kinetic-molecular theory applies on to ideal gases.. Many gases behave nearly ideally if pressure is not very high and temperature is not very slow. ... Because the attractive forces between gas particles are insignificant, gas particles glide easily past one another.

F

Explanation:

Answer:

The nitrogen cycle is a repeating cycle of processes during which nitrogen moves through both living and non-living things: the atmosphere, soil, water, plants, animals and bacteria. In order to move through the different parts of the cycle, nitrogen must change forms.

Explanation:

Answer:

  7598 J

Explanation:

Solid ice has a specific heat capacity that is different from that of liquid water. The value of that is not given here, so we will assume that "liquid ice" has the same specific heat as liquid water.

The heat liberated by cooling 14 g of water from 30°C to -20°C is ...

  (4.184 J)/(g·K)×(14 g)×(30-(-20))K = 2928.8 J

The mass 14 g of water in moles is ...

  (14 g)/(18.01528 g/mol) ≈ 0.77712 mol

The heat of fusion (converting liquid water to "liquid ice") is then ...

  (6.008 kJ)/mol × 0.77712 mol = 4668.9 J

So, the total amount of heat liberated by the change in temperature and form is ...

  2928.8 J +4668.9 J ≈ 7598 J

Answer:

44.11 g/mol

Explanation:

In order to calculate the molar mass of any molecule, we need to add the molar mass of each atom that compounds it:

The molar mass of propane is thus 44.11 g/mol.

Answer:

Ksp = 4x³

Explanation:

Step 1: Write the reaction for the solution of calcium hydroxide

Ca(OH)₂(s) ⇒ Ca²⁺(aq) + 2 OH⁻(aq)

Step 2: Make an ICE chart

Let "x" be the molar solubility of calcium hydroxide.

        Ca(OH)₂(s) ⇒ Ca²⁺(aq) + 2 OH⁻(aq)

I                                 0                  0

C                              +x               +2x

E                                x                 2x

Step 3: Write the expression for the solubility product constant (Ksp)

The solubility product constant is equal to the product of the concentrations of the products raised to their stoichiometric coefficients.

Ksp = [Ca²⁺] × [OH⁻]² = x × (2x²) = x × 4x² = 4x³

if [tex]x[/tex] represents the molar solubility of  calcium hydroxide then  correct equation for the Ksp is [tex]\bold {x^3}[/tex]

Solubility product constant Ksp:

It is the equilibrium constant for a solid substance that are dissolved in an aqueous solution. It expresses how much a solute is dissolved in solution.

The reaction of calcium hydroxide for the solution  

[tex]\bold {Ca (OH )_2(s) \rightarrow Ca^2^+(aq) + 2 OH^-(aq)}[/tex]  

1 mole of calcium hydroxide is dissociate into 1 mole of calcium ion and 2 moles of Hydroxil ion.

The Ksp equation for the solution,

[tex]\bold {Ksp =[Ca^2^+][ OH^-]^2}\\[/tex]

If [tex]x[/tex] represents molar solubility,

[tex]\bold {Ksp =[x][ x]^2 = x^3}\\[/tex]

Therefore, if [tex]x[/tex] represents the molar solubility of  calcium hydroxide then  correct equation for the Ksp is [tex]\bold {x^3}[/tex]

To know more about Ksp,

https://brainly.com/question/4736767

The correct option is (a) Cool air descends to the ground there is a  high-pressure zone.

According to climatology, air that has been lifted at the equator causes high pressure to develop at the horse latitudes,

                           also known as the torrid zone, between the latitudes of 20 and 40 degrees from the equator.

Learn more about an area of high pressure brainly.com/question/14541204

#SPJ2

Answer:

A.

Explanation:

I hope I can help

Hahahhahahahahha

Answer:

B

Explanation:

Chemical changes would mean changes that does not change in the form of matter.

A) water freezing in a pond is liquid to solid, so form of matter change, so it cannot be this one.

C) A tree buming is solid to gas, so form of matter change, so it cannot be this one.  

D) Steam rising from pavement is solid to gas, so for of matter change, so it cannot be this one.

On the other hand B, the matter stays in the same form, solid.

Tree branch to a tree branch.

Answer: the particles of matter are in constant motion

took the test

Answer: The new molarity of salt  in the photobacterium cell growth medium is 38.0 mM

Explanation:

According to the dilution law,

[tex]M_1V_1=M_2V_2[/tex]

where,  

[tex]M_1[/tex] = molarity of concentrated solution = 7.73 mM

[tex]V_1[/tex] = volume of concentrated solution = 23.5 ml  

[tex]M_1[/tex] = molarity of diluted solution = ?

[tex]V_1[/tex] = volume of diluted solution = 4.78 ml

Putting in the values we get:

[tex]7.73\times 23.5=M_2\times 4.78[/tex]

[tex]M_2=38.0mM[/tex]

Therefore, new molarity of salt  in the photobacterium cell growth medium is 38.0 mM

Answer:

1)Mass increases .

2) Mass decreases

Explanation:

1)because oxygen combine with copper metal .

2)it decomposes into gases that escape.

Answer:

8.33 L .

Explanation:

Hello there!

In this case, according to the given problem, it is possible to firstly write up the undergoing chemical reaction:

[tex]3H_2+N_2\rightarrow 2NH_3[/tex]

Whereas the mole ratio of hydrogen to nitrogen is 3:1. In such a way, given that the mole ratios can be also applied in volume when the temperature and pressure remain unchanged, it is possible to compute the required volume of nitrogen from 25.0 L of hydrogen as shown below:

[tex]25.0L\ H_2*\frac{1L \ N_2}{3L\ H_2}\\\\=8.33L[/tex]

Best regards!

when a beaker of water is heated with a yellow burner flame ;

Yellow burner flames are caused by incomplete combustion of gas and the incomplete combustion results to the presence of soot in the flame. yellow flame produces less heat energy than blue burner flames.

While when a blue burner flame is used to heat a water contained in a beaker the water gets heat up faster and the beaker remains clean ( void of soot deposits ).

Hence we can conclude that when a beaker of water is heated with a yellow burner flame the soot from the flame will be deposited on the outside of the beaker and it will take longer time to heat up the water.

Learn more : https://brainly.com/question/14624172

1. C. Linus Pauling

2. C. chemistry

3. A. atom

4. D. protons, neutrons and electrons

5. B. positively

6. A. negatively

7. C. uncharged

8. D. carries a charge

9. C. Au

10. D. protons in the nucleus

11. A. atoms

12. B. the pull of gravity on matter

13. C. protons

14. C. 112

15. C. symbols

16. D. compounds

17. C. sodium chloride salt

18. C. solids, liquids, and gases

19. A. the gaseous state

20. C. a number and a unit

21. B. the weight of an object

22. D. 1,000

23. C. 100

24. B. uncertain

25. D. 4

26. A. 1

27.C. 2.26 x 102

28. C. 5 x 10-3

29. C. atomic number

30. A. 5 g/cm3

31. D. temperature

32. C. meter

33. B. 2.2

Answer:

[tex][H^+]=1.12x10^{-6}M[/tex]

[tex]pOH=8.05\\\\pH=5.95[/tex]

Explanation:

Hello there!

In this case, since the question is incomplete, but given the concentration of the hydroxide ions in the solution you are given, it is possible for us to calculate pH, pOH and [H+] as signals of acidity or basicity for the analyzed solution:

[tex]pOH=-log([OH^-])=-log(8.9x10^{-9})=8.05\\\\pH=14-pOH=14-8.05=5.95[/tex]

Next, once the pH is calculated, we can do the same for the concentration of hydrogen ions in the solution:

[tex][H^+]=10^{-pH}=10^{-5.95}=1.12x10^{-6}M[/tex]

Best regards!

Answer:

answer is 30 g!!!!!!!!!

Explanation:

n=3 is basically all the electrons in the 3rd energy level, so

3s=2

3p=6

3d=10

so total equals 18 electrons

n=5, l=1, refers specifically to the 5p

p has 3 orbitals so it can fill a total of 6 electrons

n=6, l=1, ml=-1,

so this refers to the 6p and since we have ml it refers to the specific orbital.

ml refers to the formula: -l -> l.

so in this case -1,0,1 ; these three numbers correspond to the 3 orbitals in the p subshell, each one can hold 2 electrons,

Thus, in this case the answers is 2

Answer: hello, there! your answer is Below.

n=5, l=0

Explanation:

3s=2

3p=6

3d=10

so total equals 18 electrons

n=5, l=1, refers specifically to the 5p

p has 3 orbitals so it can fill a total of 6 electrons

n=6, l=1, ml=-1,

so this refers to the 6p and since we have ml it refers to the specific orbital.

ml refers to the formula: -l -> l.

so in this case -1,0,1 ; these three numbers correspond to the 3 orbitals in the p subshell, each one can hold 2 electrons,

Hope this Helps you!!!

Have a great day!!

Answer: [tex]\Delta S[/tex]< 0

Explanation:

Entropy is the measure of randomness or disorder of a system. If a system moves from  an ordered arrangement to a disordered arrangement, the entropy is said to decrease and vice versa.

For the reaction [tex]CaO(s)+CO_2(g)\rightarrow CaCO_3(s)[/tex]

In this reaction gaseous reactants are converting to solid products. The randomness will decrease and hence entropy will also decrease. Thus [tex]\Delta S[/tex] is negative or less than zero.

Answer: The human body readily responds to changing environmental stresses in a variety of biological and cultural ways. We can acclimatize to a wide range of temperature and humidity. ... This ability to rapidly adapt to varying environmental conditions has made it possible for us to survive in most regions of the world.

Explanation:

Answer:

1. lobster

3. Two parts of skeleton meet.

Answer:

c. H₂​O (l) → H₂​O(s)

Explanation:

The correct answer is option C: The molecular formulas for the substance(s) on the left side of the equation and on the right side of the equation are identical. This means that there was not a chemical change, but a physical one.

In this concrete example, what happened was a change of states of matter: from liquid (l) to solid (s).

Other reactions have different molecular formulas on both sides of the equation, thus they represent chemical changes.

Answer:

4.22 mol H₂O

Explanation:

Step 1: Write the equation for the synthesis of water

2 H₂ + O₂ ⇒ 2 H₂O

Step 2: Establish the appropriate molar ratio

According to the balanced equation, the molar ratio of O₂ to H₂O is 1:2.

Step 3: Calculate the moles of water produced from 2.11 moles of oxygen

We will use the previously established molar ratio.

2.11 mol O₂ × 2 mol H₂O/1 mol O₂ = 4.22 mol H₂O

Answer:

100 j

Explanation:

bascially u j subtract 50 from 150 because the system lost 50 j but theres 150 in its surroundings