Answer:
False, reactants combine to form products
Please help ASAP need this as last question.
would the power generated by Hydro power Cover the requirements for the state of Mississippi.
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
What is gold atomic number
Answer:
79
Explanation:
What is the volume of a 0.1 M HCl solution containing 1.46 moles of HCI?
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.
(GIVING BRAINLIEST!!)
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.
Learn more about different forms of precipitation at
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Hey....Tell me
What is the molecular weight of carbon dioxide??
follow me....
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 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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A 50.0 g sample of liquid water at 56.0°C, heats to 91.0 "C. How much energy is
involved in this change? (Heat capacity of liquid water is 4.17 J/gºC) (Q
=mcAT)
A. 7298 J B. 12038 J
C. 204480 J D. 17807 J
Answer:
A
Explanation:
using
mC∆t
50×4.17×(91-56)
=50×4.17×35
=7297.5
~ 7298 J
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.
Strontium 92 undergoing beta decay. Express your answer as a nuclear equation.
Answer: The nuclear equation for the beta decay is
⁹²₃₈St-------->⁹²₃₉Y + ⁰₋₁e
Explanation:
Beta decay(beta-minus and beta-plus.) occurs due to the fact that some atoms are unstable and to become stable must undergo a decay.
The beta decay that occurs in Strontium is a beta-minus decay,where it changes to another element since its atom gains a proton
A beta decay (beta minus) occurs when an atom emits beta particle ( ⁰₋₁e) Here in Strontium undergoing a beta(minus) decay, the mass number remains the same but a proton was gained. Hence the new isotope is Yttrium ⁹²₃₉Y .
⁹²₃₈St-------->⁹²₃₉Y + ⁰₋₁e
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.
I am a teacher in a college in a large city in China. One day, some students asked me to join
them for dinner. They said they wanted to take me to a very special restaurant that had
just opened. This new place served American food. The students were proud that their city
had a restaurant that served fine American food. I was quite surprised when we got to the
restaurant. My students had taken me to a very well-known fast food restaurant!
1.
In the paragraph above, the author's purpose is to
А. inform.
B
entertain
share personal experiences
C
D
persuade
Answer:
c or b
Explanation:
the story is entertaining and it shares the teachers personal experiences with the teachers students
Consider the following reaction: Cd (s) AgCl (aq) --> CdCl2 (aq) Ag (s) In this reaction, a. electrons are transferred from silver in AgCl (aq) to Cd (s) b. electrons are transferred from Cd (s) to silver in AgCl (aq) c. no electrons are transferred since the oxidation number of chlorine atoms does not change d. the oxidizing agent is Cd (s) e. the reducing agent is AgCl (aq)
Answer:
a. electrons are transferred from silver in AgCl (aq) to Cd (s)
Explanation:
In this reaction Ag is reduced:
Ag⁺ + 1e⁻ → Ag⁰While Cd is oxidized:
Cd⁰ → Cd⁺² + 2e⁻With those two semi-reactions we can see that there's a transfer of electrons from silver in AgCl(aq) to the solid cadmium.
For the record, given that Ag was reduced, Cd was the reducing agent. And because Cd was reduced, Ag was the oxidizing agent.
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
Which property can be altered by a physical change?
A. composition
B. melting point
C. appearance
D. density
Answer:
appearance
( C)
hope you like?!!
Answer: C, appearance
Explanation: Gradpoint
Atom A and Atom B have the same number of protons and neutrons, but they do not have the same nun ber of
electrons.
Which statement describes the atoms?
The atoms have the same chemical symbol.
The atoms have the same charge.
The atoms have different atomic numbers.
The atoms have different atomic masses.
Answer:
The atoms have the same chemical symbol.
Answer:
C
Explanation:
What do you think air would
look like if you could zoom in and see its
structure and composition
Answer:
clouds
Explanation:
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
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Find the number of moles in 25.0g of ammonium
Answer:
1.389 moles
Explanation:
We are given that
Given mass of ammonium=25.0 g
We have to find the number of moles in 25.0g of ammonium.
The chemical formula of ammonium [tex]NH^{+}_4[/tex]
Molar mass of N=14, Molar mass of H=1
Molar mass of ammonium (NH4+)=14+4(4)=18 g/mol
We know that
Number of moles=Given mass/Molar mass
Using the formula
Number of moles of ammonium=[tex]\frac{25}{18}[/tex]moles
Number of moles of ammonium=1.389 moles
Hence, the number of moles in 25.0g of ammonium=1.389 moles
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.
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!
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.
How much Cao will be produced by decomposition of 50g CaCO3.
Answer:
28 g of CaO
Explanation:
We'll begin by writing the balanced equation for the reaction. This is illustrated:
CaCO₃ —> CaO + CO₂
Next, we shall determine the mass of CaCO₃ that decomposed and the mass of CaO produced from the balanced equation. This can be obtained as follow:
Molar mass of CaCO₃ = 40 + 12 + (16×3)
= 40 + 12 + 48
= 100 g/mol
Mass of CaCO₃ from the balanced equation = 1 × 100 = 100 g
Molar mass of CaO = 40 + 16
= 56 g/mol
Mass of CaO from the balanced equation = 1 × 56 = 56 g
SUMMARY:
From the balanced equation above,
100 g of CaCO₃ decomposed to produce 56 g of CaO.
Finally, we shall determine the mass of CaO that will be obtained by the decomposition of 50 g of CaCO₃. This can be obtained as follow:
From the balanced equation above,
100 g of CaCO₃ decomposed to produce 56 g of CaO.
Therefore, 50 g of CaCO₃ will decompose to produce = (50 × 56)/100 = 28 g of CaO.
Thus, 28 g of CaO were obtained from the reaction.
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
Sublimation occurs when moving from
1) G to H.
2) I to J.
3) J to I.
4) I to H.
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.