Answer:
the attractive forces keep the particles together tightly enough so that the particles do not move past each other.
Explanation:
In the solid the particles vibrate in place.
how many grams are contained in 4.56 moles of krypton, Kr
The churning movement of the mantle is due to
А
fault lines.
B
erupting volcanoes.
C
convection currents.
D
plate tectonics.
Answer:
the answer should be D, I hope this helps!
CAN SOMEONE HELP ME WITH THESE QUESTIONS I WILL GIVE ALL MY POINTS 5 STARS AND THANKS AND BRAINLY ALL I ASK IS WHENN YOU ANSWER THE QUESTIONS IS THAT YOU TELL ME IF IT HAS ANYTHING TO DO WITH REFLECTION REFRACTION OR ABSORPTION AND TELL ME WICH PROBLEM THE ANSWER GOES TO PLZZZZ THAT IS ALL I ASK THXS
What are the spectators ions in this reaction?
Answer:
Option C. Na⁺(aq) and Cl¯(aq)
Explanation:
From the question given above, we obtained the following:
Na₂SO₄(aq) + CaCl₂(aq) —> CaSO₄(s) + 2NaCl(aq)
Ionic Equation:
2Na⁺(aq) + SO₄²¯(aq) + Ca²⁺(aq) + 2Cl¯(aq) —> CaSO₄(s) + 2Na⁺(aq) + 2Cl¯(aq)
From the ionic equation above, we can see that Na⁺(aq) and Cl¯(aq) are present on both side of the equation.
Therefore, Na⁺(aq) and Cl¯(aq) are the spectator ions because they did not participate directly in the reaction.
For which compound is the empirical formula the same as the molecular formula?
Answer: Thus empirical and molecular formula is sa,e for [tex]C_4H_8O[/tex]
Explanation:
Molecular formula is the chemical formula which depicts the actual number of atoms of each element present in the compound.
Empirical formula is the simplest chemical formula which depicts the whole number of atoms of each element present in the compound.
1. The empirical formula is [tex]CO_2H[/tex]
The empirical weight of [tex]CO_2H[/tex] = 1(12)+2(16)+1(1)= 45g.
The molecular weight = 90 g/mole
Now we have to calculate the molecular formula:
[tex]n=\frac{\text{Molecular weight }{\text{Equivalent weight}=\frac{90}{45}=2[/tex]
The molecular formula will be=[tex]2\times CO_2H=C_2O_4H_2[/tex]
2. The empirical formula is [tex]CH_3O[/tex]
The empirical weight of [tex]CH_3O[/tex] = 1(12)+3(1)+1(16)= 31 g.
The molecular weight = 62 g/mole
Now we have to calculate the molecular formula:
[tex]n=\frac{\text{Molecular weight }{\text{Equivalent weight}=\frac{62}{31}=2[/tex]
The molecular formula will be=[tex]2\times CH_3O=C_2H_6O_2[/tex]
3. The empirical formula is [tex]C_2H_4O[/tex]
The empirical weight of [tex]C_2H_4O[/tex] = 2(12)+4(1)+1(16)= 44 g.
The molecular weight = 88 g/mole
Now we have to calculate the molecular formula:
[tex]n=\frac{\text{Molecular weight }{\text{Equivalent weight}=\frac{88}{44}=2[/tex]
The molecular formula will be=[tex]2\times C_2H_4O=C_4H_8O_2[/tex]
4. The empirical formula is [tex]C_4H_8O[/tex]
The empirical weight of [tex]C_4H_8O[/tex] = 4(12)+8(1)+1(16)= 72 g.
The molecular weight = 72 g/mole
Now we have to calculate the molecular formula:
[tex]n=\frac{\text{Molecular weight }{\text{Equivalent weight}=\frac{72}{72}=1[/tex]
The molecular formula will be=[tex]1\times C_4H_8O=C_4H_8O[/tex]
A white crystalline salt conducts electricity
when it is melted and when it is dissolved
in water. Which type of bond does this salt
contain?
A. ionic
B. metallic
C. covalent
D.
network
For each molecule, specify the polarity of the bonds and the overall polarity of the molecule.
A. A central beryllium atom is connected to two chlorine atoms through single bonds.
B. Each chlorine atom has three lone pairs of electrons.
C. A central oxygen atom is connected to two hydrogen atoms through single bonds.
D. There are two lone pairs of electrons around the oxygen atom.
Are the bonds for each one polar or non polar? Are the molecules for each one polar or non polar?
A. BeCl2
B. H2O
C. O3
Answer:
See explanation
Explanation:
We know that the possession of polar bonds does not make a molecule polar. The BeCl2 molecule has Be-Cl bonds which are polar. However, the molecule is symmetrical and has a zero net dipole moment hence the molecule is nonpolar.
H2O is a polar molecule. It has polar O-H bonds. The molecule is bent and has a resultant dipole moment hence it is polar.
Ozone is a triatomic molecule which is bent in shape. This bent geometry creates an overall dipole moment in the molecule, hence the molecule is polar.
label the sun. which layer of the sun is #4?
Answer:
is D I guess; photosphere
NEED HELP ON THIS NOW PLEASE
Answer:
A. Bees bringing pollen from the flower of one plant to the flower of another plant.
Explanation:
Genetic diversity in organisms is enhanced by the process of sexual reproduction due to the meiotic process that the participant organisms undergo to produce gametes. A process unique to meiosis called CROSSING OVER ensures that the alleles of genes are recombined in the GAMETE or sex cells.
According to this question, POLLINATION, which is the transfer of pollen from a male flower to a female one, will lead to sexual reproduction via fertilization. However, a cross-pollination, which requires a pollinator like the bees in this question will ensure the most genetic diversity among the offsprings.
please help due in 2 minutes
Answer:
1
Explanation:
the answer is the first option because it's at less of an incline than the others, hope this helps!
30 points for answering: Solve all 4 questions.
1. Listening to the radio is an example of _______ energy.
A. sound
B. light
C. heat
D. chemical
2. Turning on and listening your favorite TV show is an example of:
E. light energy to kinetic energy
F. electrical energy to sound energy
G. heat energy to light energy
H. sound energy to chemical energy
3. Eating a taco is an example of ______ energy.
I. light
J. chemical
K. sound
L. heat
4. A rabbit eating grass and then running away from a coyote is an example of:
M. light energy to heat energy
N. sound energy to light energy
O. chemical energy to electrical energy
P. chemical energy to mechanical energy
Answer:
1. Sound
2.heat energy to light energy
3.chemical
4.chemical energy to electrical energy
Explanation:
Answer:
1. A
2. F
3. J
4. P
Explanation:
1. A. sound
2. F. electrical energy to sound energy
3. J. chemical
4. P. chemical energy to mechanical
Which Sphere does condensation occur.
Answer:
The atmosphere, I believe.
Explanation:
Which structure is the arrow pointing to?
What is the function of this organelle?
Explanation:
1.) The arrow pointing to the nucleus. A cell is the smallest unit in an organism.2.) The nucleus controls and regulates the activities of the cells and carries the genes, structures that contain the hereditary information.John pushes a 10 pound box 5 feet. How much work is done?
500 ft-lb
1,000 ft-lb
5 ft-lbs
50 ft-lbs
Answer:
50 I think not 100% sure
Explanation:
Because you just do 10*5 which equals 50.
Which of would be The acid-base pair that can create NaCL with water?
A)LiCland NaOH
B)HCl and NaOH
C)Cl2 and KaI
D)BaO + KO
Answer:
i
Explanation:
Answer:1
Explanation:v
During the intrusion of the Palisades Sill, contact metamorphism changed sandstone and shale into?
a) diorite
b) marble
c) limestone
d) hornfels
Answer:
i believe it's c but I'm not one hundred percent sure
Explanation:
Consider the reaction that occurs between the acid CHOOH and the base CH3CH2NH2.
A) Draw the complete Lewis structures for the acid and the base.
B) Explain why OOH is more acidic than CH3CH2NH2.
C) Explain why CH3CH2NH2 is more basic than CHOOH.
D) Re-draw your Lewis structures from part a. Add to these structures to show why these two molecules are attracted to each other. Do not show a curved arrow mechanism here.
E) Using curved arrows, show the reaction mechanism for the reaction of CHOOH with CH3CH2NH2.
F. Using the Lewis definition of acid-base reactions, explain what is happening at the molecular level during this reaction.
Answer:
See explanation
Explanation:
The compound CHOOH is more acidic than CH3CH2NH2 because the carbonyl group is strongly electron withdrawing hence electron density is withdrawn from the O-H bond making easier for the proton to be lost.
CH3CH2NH2 is more basic than CHOOH because of the lone pair of electrons on the nitrogen atom of CH3CH2NH2. This is reinforced by the electron pushing effect of the CH3CH2-group thereby making the amine more basic(able to abstract a proton) than CHOOH .
The images attached show the structures of CHOOH and CH3CH2NH2 . They are able to react because of the proton in CHOOH and the lone pair of electrons in CH3CH2NH2 as shown in image III. This is a reaction in which the lone pair on CH3CH2NH2 abstracts a proton from CHOOH leading to the formation of the products as shown.
What is the concentration in %v/v of a solution containing 3.2 L of ethanol in 6.5 L of solution?
Answer: Have a nice dAy?
Explanation: I thought i knew but nvm sorry
What are the products of the chemical reaction of baking soda and vinegar and what is the identity of the gas
Answer:
In the reaction between vinegar and baking soda, the reactants are vinegar (acetic acid) and baking soda (sodium bicarbonate). The products are sodium acetate, water, and carbon dioxide gas.
50 POINTS!! PLZ HELP! SCIENCE QUESTION!
Answer:
C im pretty sure
Explanation:
Because it is facing the opposite direction with opposite colors.
2. What process of chemical weathering can create rust?
Answer:
Oxidation
Explanation:
0.01 M HCl solution has a pH of 2. Suppose that during the experiment, both the universal pH indicator and the cabbage indicator turn orange-red for 0.01 M HCl. What can you conclude about the the cabbage indicator key?
A) It matches the universal pH indicator and is indicating the proper pH.
B) It should completely match the universal indicator key for all pH values greater than 7 (base).
C) It should completely match the universal indicator key for all pH values.
D) There was some sort of experimental error, because the indicators should never match.
Answer:
(A) It matches the universal pH indicator and is indicating the proper pH.
Explanation:
Correct on edge 2021
Given the data from the question, the correct statement is:
The cabbage indicator matches the universal pH indicator and is indicating the proper pH (Option A) What is pH ?This is simply a measure of the acidity / alkalinity of a solution.
The pH measures the hydrogen ion concentration while the pOH measures the hydroxide ion concentration
pH scaleThe pH scale is a scale that gives an understanding of the variation of the acidity / alkalinity of a solution.
The scale ranges from 0 to 14 indicating:
0 to 6 indicates acid 7 indicates neutral 8 to 14 indicate basicpH indicatorsThese are devices / equipment used to indicate if a solution is acidic, neutral or basic.
From the question given above, we were told that the universal and the cabbage pH indicator gives the same result.
Therefore, we can conclude that the cabbage indicator is indicating the proper pH (Option A)
Learn more about pH:
https://brainly.com/question/3709867
How many moles is 245.2g zinc?
there are 3.7503824 moles in 245.2g of zinc
Need help ASAP PLS SCIENCE
Answer:
3
m/s2
0.2
m/s2
Explanation:
if F=ma, then a = F/m. The unit to measure acceleration is typically m/s2.
Which properties do atoms of the same element share? *
chemical reactivity
melting point
5. Kinetic energy can:
A. become potential energy during a collision
B. decrease during a collision
C. increase during a collision
D. be transferred between objects during a collision
Why is co2 so bad for our bodies and why do we need to remove it? In the context of protons and ions acid/base solution.
How many moles of kclo3 are required to produce 14.3 moles of kcl?
Small particles that settle out of wind and water are called.
When an object is falling, which type of energy does it continue to gain?
A. Potential
B. Kinetic
C. Atomic
D. Sound
Answer:
B Kinetic
Explanation:
Kinetic energy is the energy of a object in motion