Answer:
i.e. mass of 1 mole of glucose, C6H12O6 = (6 × 12.01 + 12 × 1.01 + 6 × 16.00) g = 180.18 g (using atomic weight data to 2 decimals) 1 mole of carbon atoms weighs 12.01 g and there are 6 moles of C atoms in 1 mole of glucose, so the mass of carbon in 1 mole of glucose = 6 × 12.01 g = 72.06 g.
19E molar/molal Test
How many moles are in 175 L of Ar?
OA) 7.81 mol
O B) 3920 mol
OC) 4.38 mol
OD 6991 mol
What is the subscript of Carbon in Isovaleric acid C5H10O2
What the mass in grams of 6.25 mol of copper(II) nitrate
Answer:
Mass of 6.25 moles of copper(II) nitrate = 1025 grams
Explanation:
Let us calculate the molar mass of Copper (II) nitrate
Molecular formula = Ca(NO₃)₂
Atomic mass of Ca = 40 g/mol
Atomic mass of N =14 g/mol
Atomic mass of O = 16 g/mol
molar mass of Ca(NO₃)₂ = 40 + (14 X2) +( 6X16) = 164 g/mol
moles=\frac{mass}{molarmass}moles=
molarmass
mass
therefore
mass = moles X molar mass
mass = 6.25 X 164 = 1025 grams
What is the volume if density of gold is 19.3g/ml and sand is 2.3g/ml with 1L of volume?
Hi! I need some solar system facts!
Answer: I can help with that!
Explanation: 1.The tremendous growth in the U.S. solar industry is helping to pave the way to a cleaner, more sustainable energy future. Over the past few years, the cost of a solar energy system has dropped significantly -- helping to give more American families and business access to affordable, clean energy.
Through a portfolio of R&D efforts, the Energy Department remains committed to leveraging America’s abundant solar energy resources -- driving research, manufacturing and market solutions to support widespread expansion of the nation’s solar market.
2.The amount of sunlight that strikes the earth's surface in an hour and a half is enough to handle the entire world's energy consumption for a full year. Solar technologies convert sunlight into electrical energy either through photovoltaic (PV) panels or through mirrors that concentrate solar radiation. This energy can be used to generate electricity or be stored in batteries or thermal storage.
Below, you can find resources and information on the basics of solar radiation, photovoltaic and concentrating solar-thermal power technologies, electrical grid systems integration, and the non-hardware aspects (soft costs) of solar energy. You can also learn more about how to go solar and the solar energy industry. In addition, you can dive deeper into solar energy and learn about how the U.S. Department of Energy Solar Energy Technologies Office is driving innovative research and development in these areas.
3.Solar radiation is light – also known as electromagnetic radiation – that is emitted by the sun. While every location on Earth receives some sunlight over a year, the amount of solar radiation that reaches any one spot on the Earth’s surface varies. Solar technologies capture this radiation and turn it into useful forms of energy.
Given the following unbalanced equation:
_____ CoCl2 + _____ F2 à _____ CoF2 + _____ Cl2
If you are given 11.84 mole of CoCl2, how many moles of CoF2 will be produced?
Answer:
11.84 moles
Explanation:
We first balance the chemical equation
[tex]CoCl_{2} + F_{2} ------> CoF_{2} + Cl_{2}[/tex]
Both number of elements in the reactant side is equal to elements on the product side thus this equation is already balanced
Using mole ratio to find moles of [tex]COF_{2}[/tex]
1 mole of CoCl2 reacts with 1 mole of F2 to produce 1 mole of CoF2 and ! mole of Cl2
Mole CoCl2 = Mole CoF2 = 11.84 moles
1. Electricity is a form of energy created by the free or controlled
movement of charged particles such as electrons.
True
False
Answer:
true
Explanation:
If the molecules in the above illustration react to form NH3 according to the equation N2 3 H2 2 NH3 , the limiting reagent is , the number of NH3 molecules formed is , and the number of molecules in excess is
Answer:
Follows are the solution to these question:
Explanation:
Given equation:
[tex]N_2+3H_2 \longrightarrow 2NH_3[/tex]
In this equation:
[tex]1 N_2[/tex] gives [tex]= 2NH_3[/tex]
so,
[tex]3N_2[/tex] gives= [tex]2 \times 3 = 6 NH_3[/tex]
similarly:
[tex]3H_2[/tex] gives [tex]= 2NH_3[/tex]
So, [tex]6H_2[/tex] gives = [tex]\frac{2}{3}\times 6=4NH_3[/tex]
Its limited reagent is =[tex]N_2[/tex]
The amount of [tex]NH_3[/tex] molecules were formed = 4.
and the amount of [tex]H_2[/tex] excess molecules are= 1
“Sound plays an important role in our lives”. Give two points in support of this statement.
Answer:
First job out of college was in an industrial manufacturing setting. Was told by plant engineer to walk around, get used to normal sounds. He stressed anything "abnormal" is a noise more so than a sound. Report abnormalilies to supervisor immediately!! So essentially sounds are giving us warnings something is abnormal.Sounds also provide feedback. Say you are performing an experiment, requires boiling water to sanitize. Start the burner under a vessel, go on about other preparations. Sound of water boiling will trigger setting a timer for how long to let it boil.Get off work, pleasant music, nature sounds can help us decompress from a stressful day on the job.Hope some of these give you impetus to think of other bullet points, sounds good to me. !!
Explanation:
What is the name of the functional group -CH2CH3?
A) propyl
B) methyl
C) ether
D) ethyl
Do not Shows signs of generated earthquakes within the last 10 000 years
Please help:/ I can’t figure out the answer
Why are digital signals an accurate and reliable way to record and send information?
Because digital information is frequently encrypted and compressed, digitizing signals is safer.
What is digital signal?A signal path is one that expresses data as a series of distinct values; it is unable to take on one of a limited number of different values at any given moment. An analog signal, on the other hand, conveys continuous values; anywhere at given instant, it represents an actual number within such a continuous value range.
Simple digital signals encode information in discrete analog level bands. All levels in a value band indicate the very same information state. The signal throughout most digital circuits can have two correct values; this is known as a binary signal as well as logic signal. Because digital information is frequently encrypted and compressed, digitizing signals is safer.
Therefore, because digital information is frequently encrypted and compressed, digitizing signals is safer.
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help w this please and thank you.
Answer: see below
Explanation: filling the blanks in this order
point source
Pollution
Wastewater
waste
Nonpoint source
Contaminants
fertiliser
suburban yards
The mass % of C in methane (CH4) is?
Answer:
74.87% Carbon
Explanation:
The molecular mass of CH4 is 16.042 g/ mole.
X=(100 × 12.01) / 16.042= 74.87%
Answer:
[tex]\boxed {\boxed {\sf 74.87 \% \ C}}[/tex]
Explanation:
We want to find the mass percent composition of carbon in methane: CH₄
First, we must calculate the gram formula mass, also called the molar mass. Use the values for mass found on the Periodic Table. Look for carbon and hydrogen.
C: 12.011 gH: 1.008 gThere is no subscript after C, so there is just 1 atom. There is a subscript of 4 after H, so there are 4 atoms of hydrogen. We must multiply hydrogen's mass by 4.
C: 12.011 g H₄: 1.008 g * 4= 4.032 g CH₄= 12.011 g+ 4.032 g=16.043 gCalculate the percent composition.
[tex]\frac {mass \ of \ part}{mass \ of \ whole} *100[/tex]
The part is the carbon, or 12.011 grams.
The whole is the entire compound, CH₄, or 16.043 grams.
[tex]\frac { 12.011 \ g }{ 16.043 \ g} *100[/tex]
[tex]0.748675435*100\\74.8675435[/tex]
Let's round to the nearest hundredth. The 7 in the thousandth place tells us to round the 6 to a 7.
[tex]74.87 \% \ C[/tex]
The mass percent of carbon is 74.87%
As of 2017, the tallest roller coaster in the world is the Kingda Ka, located at Six Flags Great Adventure in Jackson, New Jersey. It stands 139 meters tall and, at one point, the cars drop 127 meters! Roller coasters are a great way to investigate energy. Look at the diagram of a roller coaster below, and answer the following questions. At what point on the track does the car have the greatest potential energy?
Answer:
energy due to its velocity. We can compare potential and kinetic energy by considering a car on a hill. When the car is at the top of the hill it has the most potential energy.
how do I solve this?
Answer:
Explanation:
When you divide exponentials, you subtract the powers. For the numbers infront, just use a basic calculator for.
7.95/6.02 = 1.32
10^22/10^23 = 10^-1
1.32 x 10^-1 is your answer
How many moles are there in 3.01 x 1024 atoms of argon?
Answer:
Try this for answer 3082.24
Which part of a plant creates pollen?
AME
A
pistil
B
stamen
с
petal
D
stem
Answer:
carpel
Explanation:
the pollen producing part of a flower, usually with a slender filament supporting the anther.
An object is travelling at a speed of 6500. cm per second. Convert the value to the following units (2.54 cm = 1 inch)
a. Kilometers per minute
b. Feet per hour
Answer:
3.900 km/min
7.677 × 10⁵ ft/h
Explanation:
Step 1: Given data
Speed of the object (s): 6500. cm/s
Step 2: Convert "s" to km/min
We will use the following conversion factors.
1 km = 10⁵ cm1 min = 60 s6500. cm/s × (1 km/10⁵ cm) × (60 s/1 min) = 3.900 km/min
Step 3: Convert "s" to ft/h
We will use the following conversion factors.
1 km = 3280.84 ft1 h = 60 min3.900 km/min × (3280.84 ft/1 km) × (60 min/1 h) = 7.677 × 10⁵ ft/h
how many moles are in 124.7 g of Ba(OH)2
Answer:
0.73 mol
Explanation:
No. of moles(n)= Given mass/molar mass.
Given mass=124.7g
Molar mass of Ba(OH)2= Molar mass of (Barium+2Oxygen+2Hydrogen)=137+32+2=171g
No. of moles= 124.7g/171g=0.73 mol
Match each chemical reaction with the correct identifying type.
2 NaHCO3 (S )→ Na2CO3 (s) + H2O (g) + CO2 (g)
2 C8H18 (l) + 9 O2 (g) → 16 CO2 (g) + 18 H2O (g)
3 H2 (g) + N2 (g) → 2 NH3 (g)
Cu (s) + Ag2SO4 (aq) → 2 Ag (s) + CuSO4 (aq)
Pb(NO3)2 (aq) + 2 KI (aq) → PbI2 (s) + 2 KNO3 (aq)
Double Replacement Single Replacement Synthesis/Composition Decomposition Combustion
what element is stored in the shells and skeltyons of living organisims?
Answer:
carbon
Explanation:
Many organisms use carbon to make calcium carbonate, a building material of shells and skeletons. Other chemical processes create calcium carbonate in the water. The using up of carbon by biological and chemical processes allows more carbon dioxide to enter the water from the atmosphere.
How can or organism's genetic traits affect its ability to survive?
Answer:
According to Charles Darwin's theory of evolution by natural selection, organisms that possess heritable traits that enable them to better adapt to their environment compared with other members of their species will be more likely to survive, reproduce, and pass more of their genes on to the next generation.
Which of the following pairs of aqueous solutions produce a precipitate?
Group of answer choices
Cu(NO3)2 + Na2S
NaCl + LiCl
NH4NO3 + Li2CO3
None of the above solution pairs will produce a precipitate
AgNO3 + Cu(NO3)2
Answer:
NaCi + LiCl is the correct answer
The pairs of aqueous solutions produce a precipitate is NaCl + LiCl will produce a precipitate.
What is aqueous solution?Aqueous solution is defined as any solution in which water is used to dissolve or break down a substance.
There are basically three types of aqueous solution
Precipitation reactionAcid base reactionRedox reactionNon aqueous solution is defined as a solution formed by dissolving a solute in a solvent other than water.
There are basically four types of non aqueous solution
Aprotic solventProtogenic solventProtophilic solventAmphiprotic solventThus, the pairs of aqueous solutions produce a precipitate is NaCl + LiCl.
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What is Trinitrogen hexaflouride formula
Answer:
N3F6
Explanation:
Tri- means three so three nitrogens and hexa- means six so six flourines.
Nitrogen and fluorine forms covalent compounds. The formula of one of their compound trinitrogen hexaflouride is N₃F₆.
What is covalent compounds?Covalent compounds are formed by the sharing of electrons between two atoms. Atoms which are electron deficient forms covalent compounds. The number of shared electron is based on the valency of each bonded atom.
Nitrogen is 7th element in periodic table and it have five valence electrons. Thus it needs 3 more electrons to attain stability. Fluorine is 9th element with 7 electrons in its valence shell and it needs one more electron to gain stability.
In the compound trinitrogen hexafluoride, there are three nitrogens and six fluorine. Each nitrogen shares one electron with fluorine and each fluorine in turn shares its one electron. Thus the formula of the compound is N₃F₆.
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Find the mass, in grams, of 4.10x1023 molecules of F2.
Answer:
25.88 g of F₂.
Explanation:
From the question given above, the following data were obtained:
Number of molecules of F₂ = 4.10×10²³ molecules
Mass of F₂ =?
From Avogadro's hypothesis,
1 mole of F₂ = 6.02×10²³ molecules
Next, we shall determine the mass of 1 mole of F₂. This can be obtained as follow:
1 mole of F₂ = 2 × 19 = 38 g
Thus,
38 g of F₂ = 6.02×10²³ molecules
Finally, we shall determine the mass of 4.10×10²³ molecules of F₂. This can be obtained as follow:
6.02×10²³ molecules = 38 g of F₂
Therefore,
4.10×10²³ molecules = 4.10×10²³ × 38 / 6.02×10²³
4.10×10²³ molecules = 25.88 g
Thus, 25.88 g of F₂ contains 4.10×10²³ molecules.
Round to 4 significant figures.
35.5450
Answer:
35.55 to nearest 0.01 or
hundredth place
how can natural selection can cause organisms to change over generations.
Answer:
Natural selection changes how well a species can survive in an environment.
Explanation:
I'm not the best at biology, but natural selection a term we use that's describes nature's way of choosing the strongest to survive. The species with the strongest adaptations will survive while the others will die off. For example, if a school of fish was forced to live in a colder habitat than usual, over many years some fish will adapt to that environment and be able to withstand it. But, some fish won't get those adaptations and be killed off. But, future generations will be born with that ability to withstand the cold environment and it would become normal. So, natural selection changes the way a species lives. Hope this helps
Which change will cause more CO2 to form in a closed container?
Answer:
Option C Removing Na₂CO₃
Option E Heating the container.
Explanation:
The equation for the reaction is given below:
2NaHCO₃ (s) <=> Na₂CO₃ (s) + CO₂ (g) + H₂O (g)
Enthalpy change (ΔH) = 136 KJ
To obtain more CO₂ do the following:
1. Add more NaHCO₃
From chemical equilibrium, adding more NaHCO₃ means the reactant has increase. Thus, it (the reactant) will react to form more product (CO₂)
2. Removing any of the products. Removing any of the products implies that more reactants are in the reaction vessel than the product. Thus, the reactants will react to produce more products (CO₂)
3. Heating the container. Heating the container will lead to an increase in the temperature of the reaction. Since the enthalpy change (ΔH) is positive it means the reaction is endothermic. Thus, heating the container i.e increasing the temperature will favours the forward reaction i.e more products will be obtained.
NOTE: Pressure has no effect in the reaction system since there is no gaseous reactants.
Considering the options given above, C and E gives the correct answer to the question.