Answer:
D: lithosphere
Which property can be altered by a physical change?
A. composition
B. melting point
C. appearance
D. density
Answer:
appearance
( C)
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Answer: C, appearance
Explanation: Gradpoint
Hey....Tell me
What is the molecular weight of carbon dioxide??
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Answer:
44 g/mol
Explanation:
Where and how does respiration take place
Explanation:
Glucose and oxygen react together in cells to produce carbon dioxide and water and releases energy. The reaction is called aerobic respiration because oxygen from the air is needed for it to work. Energy is released in the reaction. The mitochondria , found in the cell cytoplasm, are where most respiration happens.
What are 3 ways in which you or a classmate can use the scientific method to explore how exercise impacts the body?
Answer:
You could test for energy levels or the amount of times you can do a specific excersice.
To prepare for a laboratory?
Answer:
You have to prepare for the lab (Materials, work, paper etc.)
Set up the lab know where the lab will be taking place
Read thru the experiment before doing the lab
Make a hypothesis
Write down notes, observations, measures anything important to help with the lab!
PLEASE HELP ME!! DIMENSIONAL ANALYSIS
CHEMISTRY
DUE IN 5 MINS!!!
Answer:
12 mi/h
Explanation:
Step 1: Given data
Total distance (d): 6 kmTime elapsed (t): 19 minStep 2: Convert "d" to miles
We will use the conversion factor 1 mi = 1.60934 km.
6 km × 1 mi/1.60934 km = 3.7 mi
Step 3: Convert "t" to hours
We will use the conversion factor 1 h = 60 min.
19 min × 1 h/60 min = 0.32 h
Step 4: Calculate the average speed of the runner (s)
The speed is equal to the quotient between the total distance and the time elapsed.
s = d/t
s = 3.7 mi/0.32 h = 12 mi/h
An unknown organic compound containing carbon, hydrogen, and oxygen, is subjected to combustion analysis. When 3.498 g of the unknown compound is combusted, 7.950 g of CO2 and 3.255 g of H2O is formed. What is the molecular formula of the unknown compound if its molar mass is 174.27 g/mol?
Answer:
Molecular formula for the organic compound is: C₉H₁₈O₃
Explanation:
We determine the combustion reaction:
CₓHₓOₓ + O₂ → CO₂ + H₂O
We don't know the subscrip of the organic compound, that's why we put x.
Notice we have C in the compound and in CO₂. Let's find out the mass of C. 1 mol of CO₂ contains 1 mol of C
Then (7.950 g /44g/mol) of CO₂ may contain ?
(7.950 g /44g/mol) represents the moles of dioxide → 0.181 moles of C
These moles came from the mass of the organic compound, the 3.498 g.
So now, we can know the subscript for C.
If 3.498 g of the compound contain 0.181 moles of C
174.27 g of the compound may contain (174.27 . 0.181)/ 3.498 = 9
Let's do the same for the H.
1 mol of water contain 2 moles of H
(3.255 g /18 g/mol) of water, may contain ?
3.255 g /18 g/mol = 0.181 moles . 2 = 0.362 moles of H
These moles came from the mass of the organic compound, the 3.498 g.
Let's find out the subscript for H
If 3.498 g of the compound contain 0.362 moles of H
174.27 g of the compound may contain (174.27 . 0.362)/ 3.498 = 18
Organic compound is C₉H₁₈Oₓ. If the molar mass is 174.27 g we can easily determine the moles of O
12 g/mol . 9 + 1 g/mol . 18 + 16 g/mol . X = 174.27 g/mol
(174.27 g/mol - 12 g/mol . 9 - 1 g/mol . 18 ) / 16 = 3
Molecular formula for the organic compound is: C₉H₁₈O₃. Therefore the complete combustion reaction is:
C₉H₁₈O₃ + 12O₂ → 9CO₂ + 9H₂O
Why is n-hexanol is not soluble in H2O
Answer:
Ethanol is soluble in water because it has a hydroxyl group which allows it to form hydrogen bonds with the water molecules. This is why hexanol is not soluble in water.
Identify whether each of the following pairs of compounds are enantiomers or diastereomers: they are diastereomers they are enantiomers they are neither enantiomers nor diastereomers they are enantiomers they are diastereomers they are neither enantiomers nor diastereomers they are neither enantiomers nor diastereomers they are diastereomers they are enantiomers they are enantiomers they are diastereomers they are neither enantiomers nor diastereomers they are enantiomers they are diastereomers they are neither enantiomers nor diastereomers they are enantiomers they are diastereomers they are neither enantiom
Hello. You did not show the pairs of compounds to which the question refers, which makes it impossible for them to be classified as enantiomers or diastereomers. However, I will try to help you in the best possible way.
To find out if the compounds are enantiomers or diastereomers, you must evaluate their structure in relation to each other. This is because enantiomers, will be the pairs of compounds that have very similar structures, reaching the point of looking like mirrored structures of each other, but they cannot overlap. On the other hand, diastereomers are neither able to overlap, nor have such similar structures.
Would convection work if there were no
gravity? Why
or
why not
Answer:
no
Explanation:
Because gravity is necessary for density differences to arise, convection wouldn't happen in a zero-gravity environment such as space.
Answer:
Absolutely, convection can occur in the absence of gravity. Convection in general and “natural convection” are two different things. Convection is a mode of heat transfer that involves bulk fluid motion. So take your space ship somewhere with negligible gravitational fields and shoot yourself in the face with a water gun full of cold water. Have a great day!
Sublimation occurs when moving from
1) G to H.
2) I to J.
3) J to I.
4) I to H.
1. Huntington’s disease is a dominant allele (not sex linked) that usually does not manifest itself until after age thirty- five. Individual who have the disease are almost always heterozygous. As a genetics counselor, you are visited by a 23-year-old woman. Her mother has Huntigton’s, but her father is normal. Use alphabets when required.
a. What is the genotype of the mother?
b. What is the genotype of the father?
c. What is the probability that this woman will develop Huntington’s disease as she grows older ?
WHO KNOWS HOW TO DO THIS
Answer:
a the mother is heterozygous so Aa
b would be aa
c. 50% as she could either get the dominant allele from her mother or not it is a coin flip
Explanation:for c the best way to do that one is to draw a punnitt square
Please help ASAP need this as last question.
would the power generated by Hydro power Cover the requirements for the state of Mississippi.
which of these salts is more soluble? sodium chloride or calcium carbonate?
Answer:
Sodium Carbonate is more soluble.
Explanation:
chlorine take longer to dissolve
Answer:
Sodium Chloride
Explanation:
Sodium Chloride is salt and we can tell that salt is more soluble than calcium chloride as it is used for making cast for fractures
how did Simard conduct her experiments
Answer:
Simard planted paper birch, fir, and cedar trees in a plot and then injected them with different radioactive isotope carbon dioxide gases and covered them with bags. She waited an hour, then checked the trees for radiation.
How many moles are in 9.20x10^20 molecules of water (H2O)?
Please and thank you :)!!!
Answer:
1.53 * 10^-3 moles of H20
Explanation:
I see that you're using the factor-label method, so if you want to convert a number into another number, let's start with the first number.
We have 9.20 * 10^20 molecules of water.
6.02 * 10^23 particles or molecules of water is 1 mole
If we want moles, we can write it like this
9.20 * 10^20 molecules of H20 | 1 mole of H20
| 6.02 * 10^23 molecules of H20
= 1.53 * 10^-3 moles of H20
How are earthquakes both a destructive and creative force?
Answer:
earthquakes creates everything if we didn't have earthquakes the earth would be no continents, no atmosphere, no oceans, the earth would be as dead and dry as the moon
Explanation:
If 1.23 g of chlorine gas dissolves in
0.95 L of water at 15.6 psi, at what
pressure (in psi) would you be able
to dissolve 1.89 g in the same
amount of water?
Answer:
24 PSI
Explanation:
The concept Henry's law is used here to determine the pressure at which 1.89 g of chlorine gas is dissolved in the same amount of water. The pressure is 24.0 psi.
What is Henry's law?Henry's law states that at constant temperature the solubility of a gas in a liquid is directly proportional to the pressure of the gas in equilibrium with the solution. The solubility of a gas in a particular solvent is mainly expressed in terms of Henry's law.
The equation of Henry's law is given as:
c = KH . p
Here c is the solubility of the gas, p is the partial pressure and KH is the Henry's constant.
Here only the amount of chlorine gas to dissolve changes. For two different grams of chlorine gas, the equation is:
c ₁ /p ₁ = c ₂ / p ₂
1.23 / 15.6 = 1.89 / P₂
P₂ = 24.0 psi
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What is the volume of a 0.1 M HCl solution containing 1.46 moles of HCI?
how to get a girlfrend at age 70
Briefly explain why the atoms of Carbon and Nitrogen have the same mass of 14
Answer:
Explanation:
Atoms of an element with the same mass number make up an isotope of the element. Different isotopes of the same element cannot have the same mass number, but isotopes of different elements often do have the same mass number, e.g., carbon-14 (6 protons and 8 neutrons) and nitrogen-14 (7 protons and 7 neutrons).
Answer: NO I know sorry
Explain the effects distance and mass have on the gravitational pull of the planets.
Answer:
Gravity is normal...
Explanation:
Objects with more mass have more gravity. Gravity also gets weaker with distance. So, the closer objects are to each other, the stronger their gravitational pull is. Earth's gravity comes from all its mass. So, theoretically speaking planets move or get pulled due to their huge amount of mass.
What is the volume of 1g of ice in cm3?
Answer:
What is the volume of 1g of ice in cm3?
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What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
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What is the volume of 1g of ice in cm3?
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What is the volume of 1g of ice in cm3?
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What is the volume of 1g of ice in cm3?
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What is the volume of 1g of ice in cm3?
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What is the volume of 1g of ice in cm3?
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What is the volume of 1g of ice in cm3?
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What is the volume of 1g of ice in cm3?
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What is the volume of 1g of ice in cm3?
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What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
What is the volume of 1g of ice in cm3?
Explanation:
The rate constant for a particular zero-order reaction is 0.075 M s-1. If the initial concentration of reactant is 0.537 M it takes ________ s for the concentration to decrease to 0.100 M.
Answer:
It takes 5.83s to decrease the concentration of the reactant from 0.537M to 0.100M
Explanation:
A zero-order reaction follows the equation:
[A] = [A]₀ - kt
Where [A] is actual reaction of the reactant = 0.100M
[A]₀ the initial concentration = 0.537M
k is rate constant = 0.075Ms⁻¹
And t is time it takes:
0.100M = 0.537M -0.075Ms⁻¹t
-0.437M = -0.075Ms⁻¹t
5.83s = t
It takes 5.83s to decrease the concentration of the reactant from 0.537M to 0.100M
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Identify and describe the different forms of precipitation shown in the images.
Answer:
snow, hail, rain
Explanation:
precipitation is the transfer of water in any form from the atmosphere to the land or sea surface
Forms of Precipitation. It can be liquid or solid; the main precipitation types are rain, sleet, snow, ice pellets, hail, and drizzle.
Why are there different forms of precipitation?There are different forms of precipitation based on atmospheric conditions. Warmer atmospheric conditions might result in rain, drizzle, or hail (if it's a thunderstorm). Colder atmospheric conditions might result in snow, sleet, freezing rain, or ice crystals.
What are the 4 main types of precipitation?The four main types of precipitation are rain, snow, sleet, and hail. Rain is liquid precipitation that falls during many parts of the year. Hail is associated with thunderstorms and generally falls in warmer temperatures. Snow and sleet are frozen and generally fall in colder temperatures.
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I never see anyone with this question
Answer:
i cant see the pic
Explanation:
no hablo ingles jajajajjajajajajabbbbbhuuuuuuu
What do you think air would
look like if you could zoom in and see its
structure and composition
Answer:
clouds
Explanation:
What is gold atomic number
Answer:
79
Explanation:
reativity of alkali metals increases down the group while reativity decreases down the group in helogens
Complete question is;
Chemical reactivity of alkali metals increases down the group while reactivity of halogens decreases down the group. Give reasons
Answer:
Explained below
Explanation:
Alkali metals exhibit reactivity due to their electropositivity. Now, for alkalis, their electro-positivity increases down their group. Since their reactivity increases with increase in electropositivity, it means their reactivity also increases down the group.
Whereas, the reactivity of halogens occurs as a result of their electronegativity. Now, electronegativity for halogens decreases down the group. Since their reactivity decreases with decrease in electronegativity, it means that their reactivity will also decrease down the group.
What causes Earth's major wind patterns? Radiant energy from the sun strikes Earth unevenly. The Earth is spinning The density of ocean water changed wind patterns The latitudes of different areas
A. Radiant energy from the sun strikes earth unevenly
I took the quiz and tried all of the other answers so
Radiant energy from the sun strikes Earth unevenly is the main cause of Earth's major wind patterns.
What causes Earth's major wind patterns?The main cause of Earth's winds is uneven heating by the sun. This uneven heating causes changes of atmospheric pressure and winds blow from regions with high pressure to those with low pressure.
So we can conclude that Radiant energy from the sun strikes Earth unevenly is the main cause of Earth's major wind patterns.
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