Answer:
-1
Explanation:
According to this question, the oxidation state/number of H and O in C2H4O is +1 and -2 respectively.
The oxidation state of carbon in the compound can be calculated thus:
Where;
x represents the oxidation number of C
C2H4O = 0 (net charge)
x(2) + 1(4) - 2 = 0
2x + 4 - 2 = 0
2x + 2 = 0
2x = -2
Divide both sides by 2
x = -1
The oxidation number of C in C2H4O is -1.
The atomic number of an atom is always equal to the total number of
A. neutrons in the nucleus
B. protons in the nucleus
C. neutrons plus protons in the atom
D. protons plus electrons in the atom
Answer:
yep C is correct!!
Explanation:
Which equation shows how to solve for enthalpy of solution based on the information in tables?
Answer: B. triH sol Mgl2= -triHlat+ triHhydr Mg^2+ 2triHhydr^l-
Explanation:
Just did it and it was right
The normal boiling point of a certain liquid X is 141.70 °C, but when 68.1 g of barium hydroxide (Ba(OH)) are dissolved in 750. g of X the solution boils at 142.5C instead. Use this information to calculate the molal boiling point elevation constant
Answer:
Explanation:
Normal boiling point = 141.7°C
Elevated boiling point = 142.5°C
Elevation of boiling point Δt = 0.8°C
Formula for elevation of boiling point is as follows .
Δt = 1000 x Kb x w / (MW )
where w is weight of solute , M is molecular weight of solute , W is weight of solvent in grams, Kb is molal boiling point elevation constant .
Mol weight of barium hydroxide = 171 .
.8 = 1000 x Kb x 68.1 / (171 x 750 )
Kb = 1.5°C / m
An ideal gas is in a sealed rigid container. The average kinetic energy of the gas molecules depends most on An ideal gas is in a sealed rigid container. The average kinetic energy of the gas molecules depends most on the temperature of the gas. the number of molecules in the container. the size of the container. the mass of the molecules.
Answer:
The temperature of the gas.
Explanation:
According to the kinetic molecular theory, the molecules of a substance are in constant random motion.
If an ideal gas is contained is a sealed rigid container, the average velocity of the gas molecules is dependent of the temperature of the gas.
Recall that temperature is defined as the average kinetic energy of the molecules of a body.
Which water usage uses the least amount of water in a year in the United States? a industry
b livestock c irrigation d public water supply
plzzzzzzzz hurrrrry
Please help me thanks so much!?!?
Answer:
false
Explanation:
chemical changes turn into new substances
what are the sources of error of electroplating?
Answer:
electroplating is host to several defects due to the complexity of the process. Common electroplating defects often include issues that are present before plating, such as cold shuts, pitting, sharp edges, cleavage points and unclean manufacturing. During plating, flaking or a loss of adhesion can occur.
Explanation:
how many atoms of Na are there in 0.17 moles of Na
Answer:
1.023 × 10²³ atomsExplanation:
The number of atoms in a substance can be found by using the formula
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
N = 0.17 × 6.02 × 10²³
We have the final answer as
1.023 × 10²³ atomsHope this helps you
A species of desert plant produces flowers that only bloom at night. How does this enhance the survival of the species?
A. This allows the plants to conserve water and not bloom during the heat of the day.
B. This species relies on nocturnal animals like moths for pollination and reproduction
C. This species relies on moonlight for photosynthesis.
D.This allows flowers to stay closed durng the day when herbivores are more likely to eat them.
Od
Answer:
A. This allows the plants to conserve water and not bloom during the heat of the day
Explanation:
Most desert plants only bloom at night because they take advantage of animals like moths and insects that fly at night for pollination and reproduction.
Because these plants are in the desert and do not get enough water except from short occasional rainfalls, they conserve water and not bloom during the heat of the day. They bloom at night when the temperature is low and this enhances their water conservation and survival.
when you tapped the stick on one end of the tape, did you see a wave that
formed and rolled down the line? Write your observations.
Answer:
Yes.
Explanation:
Yes, I did see a wave that formed and rolled down the line because of tapping the stick on one end of the tape. The wave that had been created goes from one side of the tape to the other end of the tape. This movement occur in the tape due to the disturbance at one end of the tape so we can say that wave formed in the tape and rolled down the line.
Calculate the enthalpy change with the help of Hess’s law for the decomposition of hydrogen peroxide, (2H O (l) ------- 2H O(l) + O (g)), if the enthalpy of formation of water (2H (g) +O (g)) is –512KJ and vaporization of hydrogen peroxide (H O (l) = H (g) + O (g)) is 376 kJ.
Answer:
Explanation:
For answer see attached file .
A molecule or ion that donates the hydrogen in a hydrogen bond is a hydrogen bond donor A molecule or ion that binds to this hydrogen is a hydrogen bond acceptor. Specify the hydrogen bonding behavior of the 4 species below by selecting: donor for species that act as donors only acceptor for species that act as acceptors only both for species that act as both donors and acceptors neither for species that act neither as donors nor as acceptors.
The question is incomplete, the complete question is found in the image attached.
Answer:
1- acceptor
2-donor
3-acceptor
4-donor
Explanation:
A hydrogen bond acceptor is a molecule that has an electronegative atom having a lone pair of electrons that participates in the hydrogen bond.
A hydrogen bond donor is the molecule that supplies the hydrogen atom of a hydrogen bond.
If we look at structure I-IV in the image attached, I and III are hydrogen bond acceptors because they all possess electronegative atoms having lone pairs of electrons but do not have hydrgen atoms bonded to highly electronegative atoms.
Similarly, structures II and IV are hydrogen bond donors. The C=C double bond is electron withdrawing and highly electronegative making the hydrogen atoms attached to it acidic and hydrogen bond donors. Also, nitrogen is an electronegative atom thereby making structure IV a hydrogen bond donor.
Which statement gives a disadvantage of multicellular organisms?
A. They need small amounts of energy
B. They reproduce slower than unicellular organisms
C. They can perform more functions
D. Cells are able to provide support
Answer: B. They reproduce slower than unicellular organisms
Explanation:
In unicellular organisms there is a single cell which performs all the functions like digestion, respiration, and reproduction. The cell reproduce by cell division. The single parent cell divides into two identical daughter cells. But multicellular organisms exhibit multiple cells and their reproduction is complex. They reproduce by sexual mode of reproduction in which separate sex cells are produced when they fuse form zygote which is the precursor of new organism. This process is slower than that of the cell division and production of progeny by the unicellular organisms. Thus reproduction is slower in multicellular organism this is the disadvantage in multicellular organisms.
Answer:
B. they reproduce slower than unicellular organisms
Explanation:
Submit your organization chart about the fictional elements. Remember to proofread your work before submitting.
Answer:
follow the picture,,, it includes the normal elements too
The reason why I organized these specific elements from the list of elements that you provided me is because they have to do with color. I believe organizing by color would be much easier for me to understand. There is also a somewhat equal amount for each color. For example I used the colors: orange, green and red In my chart because there are four of each color in the list you provided me.
identify the reactants and products in the following chemical reaction C r 2 O 3 + 3 C ---> 2cr + 3CO
Answer:
Cr2O3 and 3C are the reactants
2Cr and 3CO are the products
Explanation:
Cr2O3is reacting with 3C to form 2Cr + 3CO
How many total oxygen (O) atoms are present in the reactants side of the equation
C2H20H + 302 – 2002 + 3H20?
2
Answer:
there are 7 total oxygen (O) atoms are present in in the reactants side of the equation
Someone please help i don’t have much time left
Answer: Energy of reactants = 30, Energy of products = 10
Exothermic
Activation energy for forward reaction is 10.
Explanation:
Exothermic reactions are defined as the reactions in which energy of the product is lesser than the energy of the reactants. The total energy is released in the form of heat and [tex]\Delta H[/tex] for the reaction comes out to be negative.
Energy of reactants = 30
Energy of products = 10
Thus as energy of the product < energy of the reactant, the reaction is exothermic.
Activation energy [tex](E_a)[/tex] is the extra energy that must be supplied to reactants in order to cross the energy barrier and thus convert to products.
[tex]E_a[/tex] for forward reaction is (40-30) = 10.
The empirical formula of a hydrocarbon (compound that contains only C and H is found to be CH. laboratory procedures have found that the molar mass of the compound is 78 g/mol. What is the molecular formula of this compound
Answer:
C₆H₆
Explanation:
Molar mass of the compound is 78g/mol
Unknown:
Molecular formula of the compound = ?
Solution:
The empirical formula of the compound is CH.
Empirical formula is the simplest formula of a compound.
To solve this problem:
Find the molar mass of CH;
Molar mass = 12 + 1 = 13g/mol
Multiplication index = [tex]\frac{78}{13}[/tex] = 6
So;
(CH)₆ ;
Therefore:
C₆H₆
Heat moves from what source by convection and radiation?
Answer:
heat can move from any source but if we are being legitimate it moves from convection
Explanation:
Molecule A undergoes isomerization to molecule B in acetone. Using curved arrows, showing key intermediates and any formal charges, propose a detailed mechanism for this isomerization. Provide a brief explanation why this isomerization occurs.
Answer:
hello your question is incomplete attached below is the complete question
answer :
we use Isomerization because conjugated allylic carbocation is more stable when compared to a Non-conjugated Allylic carbocation
Explanation:
Reason for the mechanism
we use Isomerization because conjugated allylic carbocation is more stable when compared to a Non-conjugated Allylic carbocation
attached below is the detailed mechanism
Do atoms have the same number of protons as its neutrons? I know that atoms can have different number of electrons compared to protons, but does the number protons and neutrons stay equal?
The ozone "hole" over Antarctica formed as the result of a series of chemical reactions. The loss occurs in part through three consecutive steps in which ozone is broken down: Step 1: Chlorine atoms react with ozone (O3) to form chlorine monoxide and molecular oxygen. Step 2: Chlorine monoxide molecules combine to form ClOOCl gas Step 3: ClOOCl absorbs sunlight and breaks into chlorine atoms and molecular oxygen. a) Write a balanced equation for each step. b) Write an overall balanced equation for the sequence
Answer:
A)
Cl + O3 --> ClO + O2
2ClO --> ClOOCl
ClOOCl --> 2 Cl + O2
B)
Cl2 + 4O3 -> 2 ClO + 5O2
Explanation:
Step 1: Chlorine atoms react with ozone (O3) to form chlorine monoxide and molecular oxygen
Cl + O3 --> ClO + O2
Step 2: Chlorine monoxide molecules combine to form ClOOCl gas
2ClO --> ClOOCl
Step 3: ClOOCl absorbs sunlight and breaks into chlorine atoms and molecular oxygen
ClOOCl --> 2 Cl + O2
B) Overall Balanced equation
Cl2 + 4O3 -> 2 ClO + 5O2
Which factors directly affect the magnetic force produced by an electromagnet?
O number of turns in the wire, amount of current
O amount of current, type of force
O length of core, number of turns in the wire
O amount of current, length of core
The reactants of two chemical equations are listed.
Equation 1: AgNO3 + Zn
Equation 2: AgNO3 + MgCl2
Based on the type of reaction, which reaction can be used to extract silver metal from silver nitrate solution?
Answer: Equation 1, because Zn being more reactive, replaces Ag from AgNO3
Explanation: I got it right on the quiz and it replaces it
A quantity of water is heated from 25.0°C to 36.4°C by absorbing 325 J of heat energy. If the specific heat of water is 4.18 J / g°C, what mass is this quantity of water?
Answer:
6,8 g
Explanation:
c = 4.18 J/(g * °C) = 4180 J / (kg * °C)
[tex]t_{1}[/tex] = 25 °C
[tex]t_{2}[/tex] = 36,4 °C
Q = 325 J
The formula is: Q = c * m * ([tex]t_{2} - t_{1}[/tex])
m = [tex]\frac{Q}{c * (t_{2} - t_{1} )}[/tex]
Calculating:
m = 325 / 4180 * (36,4 - 25) ≈ 0,0068 kg = 6,8 g
The mass of the quantity of water heated from 25.0°C to 36.4°C by absorbing 325 J of heat energy is 6.8grams.
HOW TO CALCULATE MASS:
The mass of a substance can be calculated by using the following formula:
Q = m × c × ∆T
Where;
Q = quantity of heat absorbed (J)c = specific heat capacity (4.18 J/g°C)m = mass of substance∆T = change in temperature (°C)According to this question;
m = ?
∆T = 36.4°C - 25°C = 11.4°C
Q = 325J
325 = m × 4.18 × 11.4
325 = 47.65m
m = 325 ÷ 47.65
m = 6.8g
Therefore, the mass of the quantity of water heated from 25.0°C to 36.4°C by absorbing 325 J of heat energy is 6.8grams.
Learn more about specific heat capacity at: https://brainly.com/question/2530523?referrer=searchResults
The density of a sample of gasoline is 0.70 g/cm3. What is the mass of 1 liter of this gasoline?
Group of answer choices
0.7 g
70 g
700 g
1,429 g
Answer:
700g
Explanation:
Given parameters:
Density of gasoline = 0.7g/cm³
Volume of gasoline = 1L = 1000cm³
Unknown:
Mass of the gasoline = ?
Solution:
Density is the mass per unit volume of a substance. It can be expressed as;
Density = [tex]\frac{mass}{volume}[/tex]
So;
Mass = density x volume
Mass = 0.7 x 1000 = 700g
How many grams of SO3 can be produced if 3.3 moles of O2 reacts?
Why does hot tea brew faster than cold tea? Provide scientific data.
Answer:
Increased heat makes all the molecules in the tea/water mix vibrate and move around a great deal more, thus increasing the rate of diffusion, and therefore increasing the rate of brewing.
Explanation:
hope i help lol :)
What best describes how the processes of scientific
investigation and technological design are involved in
this situation?
O The clothing company conducted a scientific
investigation to communicate results to researchers,
who then used the knowledge in a technological
design.
O The clothing company conducted a scientific
investigation to produce a product that researchers
could then test while designing new technology.
O The clothing company used technological design to
create a product that helped aid researchers
conducting a scientific investigation.
O The clothing company designed a new technology
that provided information researchers needed in order
to continue with their scientific investigation.
Answer:
O The clothing company conducted a scientific investigation to communicate results to researchers, who then used the knowledge in a technological
design.
Explanation:
The products of scientific investigation are converted into technology for use engineers.
Engineering is the application of science to solve life problems. Science in itself is an inquiry into nature.
Science uses a series of methodical approaches to conduct investigations and researches. The product of the research is taken up by an engineer. The engineer deploys this into the right and applicable technology available. In the clothing company, the product of the investigation are relayed to the engineers who uses technological innovations to design a new tool for use.Does sugar make children hyperactive?
Answer:
yes it does
Explanation:
Answer:
Yes
Explanation:
Trust me I know :/