In 1 hour, 2.344 × 10¹⁶ kJ of solar energy reaches the United States.
The entire area of the United States is 9,158,960 km². We will convert it to m² using the conversion factor 1 km = 10³ m, squared.
[tex]9,158,960 km^{2} \times (\frac{10^{3} m }{1km} )^{2} = 9.158960 \times 10^{12}\ m^{2}[/tex]
In order to find the amount of solar energy that reaches 9.158960 × 10¹² m² we will use another conversion factor: 2559 kJ of energy reaches a square meter of the United States in one hour.
[tex]9.158960 \times 10^{12}\ m^{2} \times \frac{2559 kJ}{m^{2}.h } = 2.344 \times 10^{16} kJ/h[/tex]
In 1 hour, 2.344 × 10¹⁶ kJ of solar energy reaches the United States.
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Which area of science is considered the central science?
chemistry
biology
physics
environmental science
Answer:
A. Chemistry.
Explanation:
CH3NH2+ H2N-CH2-COOH
CH3NH2+ Alanin
Answer:
i don't understand
Explanation:
Ii don't understand
Which of the following sets of elements has the same chemical properties?
A) F, CI, Te
B) Li, Na, Ba
C) Cu, Ag, Au
D) U, P, Si
How do cells replace themselves?
Cells go through the process of cellular respiration to make new cells.
Cells go through the process of mitosis to make new cells.
Cells go through cell differentiation to make new cells.
Cells go through the process of photosynthesis to make new cells.
Answer:
Cells go through the process of mitosis to make new cells.
Explanation:
During mitosis, a parent cell splits into two new cells, the new cells are called daughter cells, which are copies of the original cells.
What is best illustrated by wattson and crick's ball-and-stick model of DNA
2) If a wet sponge weighs 59.3 grams and the
Same spinge when dry, weighs 15.8 grams,
what percent of the initial weight comes from water?
The percentage of water in the wet sponge is 73.34%.
AMOUNT (IN GRAMS) OF WATER IN THE SPONGE:
According to this question, a wet sponge weighs 59.3 grams. However, when dried, the sponge weighs 15.8 grams. This means that the mass (amount) of water in the original sponge is as follows:59.3 - 15.8
= 43.5 grams.
The percentage of water in the initial mass of the sponge can therefore, be calculated as:% mass of water = (mass of water ÷ mass of wet sponge) × 100
% mass of water = 43.5/59.3 × 100
% mass of water = 0.73335 × 100
% mass of water = 73.34%
Therefore, the percent of the initial weight that comes from water is 73.34%
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How do scientists take instruments for measurement up to about 100,000 feet of
elevation?
A.jet aircraft
B.rockets
C.satellites
D.weather balloons
Answer:B
Explanation: i got it right
The scientists use weather balloons to measure up to about 100,000 feet of elevation. The correct option is D.
What is weather balloon?A weather balloon, also known as a sounding balloon, is a balloon that carries instruments aloft to transmit data on atmospheric pressure, temperature, humidity, and wind speed using a small, disposable measuring device known as a radiosonde.
Weather balloons can travel up to 24 miles (39 kilometres) before bursting, and a payload can land (via parachute) up to 75 miles (120 kilometres) away, depending on wind conditions at the launch site.
If the balloon is flexible, it will expand as it rises to lower air pressure altitudes.
To prevent them from popping, weather balloons are only partially filled when released.
Thus, the correct option is D.
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A popular car has a gas tank that holds a maximum of 14.5 gallons of fuel. What is
the size of the tank in liters ?
Answer:
54.883, so rougly about 54.9 liters.
Explanation:
To convert gallons to liters, multiply the amount of gallons by 3.785.
14.5 * 3.785 = 54.883
Taking into account the change of units, the size of the tank is 54.88 liters.
In first place, the rule of three is a tool used to quickly solve problems involving a proportional relationship between two variables.
The rule of three is a way of solving problems of proportionality between three known values and an unknown value, establishing a relationship of proportionality between all of them.
If the relationship between the magnitudes is direct, that is, when one magnitude increases, so does the other (or when one magnitude decreases, so does the other), the direct rule of three should be applied.
The rule of three is applied as follows, with A, B and C being known values and D being an unknown value: if A maintains a certain relationship with B, and it is known that C and D have the same relationship, it is possible to calculate the unknown value D using the following expression:
[tex]D=\frac{CxB}{A}[/tex]
In this case, the rule of three can be applied as follows: if 1 gallon is equal to 3.785 liters, 14.5 gallons are equal to how many liters?
[tex]D=\frac{14.5 gallonsx3.785 liters}{1 gallon}[/tex]
Solving:
D= 54.88 liters
In summary, the size of the tank is 54.88 liters.
Learn more with this example:
https://brainly.com/question/17839792?referrer=searchResultshttps://brainly.com/question/14586541?referrer=searchResultsHow many grams of H2O will be produced by 58.2L of CH4 at STP?
Answer:
112 L O2.
Explanation:
Explanation:
CH4(g)+2O2(g)=CO2(g)+2H2O. 58.2l/22.4l=2.60moles CH4*2=5.20 moles H2O
Two students prepare lab reports one for a chemistry class and the other for a biology class which of the following items will both reports contain!Helpppp
Answer:
the results of an investigation thank me later
Explanation:
a graduated cylinder which contains 47.3 mL, weighs 89.62 grams. when a solid submerged in the water, the volume level rises to 55.4 ml and the mass to 123.79 grams. a) what is the volume of the solid? b) what is the mass of the solid? c) what is the density of the solid?
Explanation:
the mass of the object is 123.97-89.62=34.35g
the volume is 55.4-47.3=8.1ml
the density is 34.35/8.1=4.2g/ml
Find the mass of an object with 30 cm3 and has a density of 2 g/cm3 (input number only)
[tex]\begin{gathered} {\underline{\boxed{ \rm{\red{Mass \: = \: Density × Volume}}}}}\end{gathered} [/tex]
Density = 2 g/cm³Volume = 30 cm³[tex]\large\bf\blue{ \diamond} \: \rm \: \: 30 \: \times \: 2 \\ \\ \large\bf\blue{ \diamond} \: \rm \: 60 \: kg[/tex]
Mass of object is 60 kg
what is meant by Orion? for grade 10
Answer:
[Latin (genitive Orionis)] : a constellation on the equator east of Taurus represented on charts by the figure of a hunter with belt and sword. 2 : a giant hunter slain by Artemis in Greek mythology.
Explanation:
Answer:
a constellation on the equator east of Taurus represented on charts by the figure of a hunter with belt and sword. 2 : a giant hunter slain by Artemis in Greek mythology
Orion constellation is one of the brightest and best known constellations in the night sky. It lies on the celestial equator. Orion has been known since ancient times. The constellation is also known as the Hunter, as it is associated with one in Greek mythology.
How to figure out which melting point would have the lowest melting point ?
Answer:
That would be helium, with a melting point of 0.95 K (-272.20 °C)—although this happens only under considerable pressure (~25 atmospheres). At ordinary pressure, helium would remain liquid even if it could be chilled to absolute zero.
Answer:
By evaluating the intermolecular forces and size!
Explanation:
Essentially the stronger the forces the higher the melting point... Here is a list of interemolecular forces (the first will be the weakest).
1) Dispersion forces (Exhibited by evrey molecule) (Weakest)
2) Dipole-Dipole
3) Hydrogen bonding
4) Ionic bonds (Strongest)
The stronger the forces it has then the higher the melting point. Also aromatic structures have a higher melting point as well. A general rule of thumb is, the larger the structure is then the higher thee melting point it.
What causes the pressure in a gas
Answer:
Gas pressure is caused when gas particles hit the walls of their container. The more often the particles hit the walls, and the faster they are moving when they do this, the higher the pressure. This is why the pressure in a tyre or balloon goes up when more air is pumped in.
Evaluate the model. Select the statement that does NOT accurately identify the structures labeled in the picture.
Question 1 options:
DNA is found in C, the nucleus.
DNA is organized into chromosomes, D.
Genes, G, are segments of chromosomes that carry traits.
Genes are made of small segments of DNA, F, that code for particular traits.
Question 2 (0.4 points)
Chloroplasts and mitochondria are both involved in energy conversion in cells. Select the other similarity they share.
Question 2 options:
contain DNA
contain thylakoids
found in ALL cells
not surrounded by a membrane
Question 3 (0.4 points)
Plant and animal cells are both eukaryotic. Using the model, identify the similarities between the two cells.
Question 3 options:
Both have a plasma membrane, ribosomes, mitochondria, and centrioles.
Both have a plasma membrane, ribosomes, mitochondria, and golgi apparatus.
Both have a cell wall, ribosomes, mitochondria, and endoplasmic reticulum.
Both have a mitochondria, nucleus, endoplasmic reticulum, and chloroplasts.
Question 4 (0.4 points)
What is the chemical symbol for Nitrogen?
Question 4 options:
N
NI
Ne
Ni
Question 5 (0.4 points)
The shoes are green, a size 8, have white laces, made out of cotton, and have a rubber sole. The description given is a list of ___________ properities of the shoes.
Question 5 options:
chemical
mechanical
physical
structural
Answer:
#1 Is a
Explanation:
What kind of science experiment idea should I do?
Answer:
do what you can do not what people tell you to do
Explanation:
Answer:
maybe with baking soda and vinegar
Explanation:
please mark me brainliest pleaseWhat is the volume of the liquid in the graduated cylinder in mL?
what is chemistry...
jab-njko-rzv
Answer:
Chemistry is the science of matter, its properties, structure, changes or reactions and the energy that accompanies these changes.
Calculate the corresponding weights of liquefied phenol and propylene glycol needed to prepare 24 15 ML - bottles of the following formula for a cood sore topical liquid:
liquefied phenol 0,4 mL
camphor 0,5 g
Benzocaine 2,2 g
Ethanol 65 mL
Propylene glycol 17 mL
Purified water ad 100 mL
Mass/corresponding weight of liquefied phenol = 1.5408 grams
Mass/corresponding weight of propylene glycol = 63.6 grams
Given that :
Total volume of the water bottles = 24 * 15 ml
= 360 ml
Volume of recipe after pure water is added = 100 ml
the number of units required = Total volume of water / volume of recipe
= 360 / 100 = 3.6 units
i) Determine the Mass ( weight ) of liquefied phenol
amount of liquefied phenol = 0.4 ml * 3.6 = 1.44 ml
given that density of liquefied phenol = 1.07 g/ml
∴ mass of liquefied phenol = density * volume
= 1.07 * 1.44 = 1.5408 grams
ii) Mass( weight ) of propylene glycol
amount = 17 * 3.6 = 61.2 ml
density of propylene glycol = 1.04 g/ml
∴ mass of propylene glycol = 61.2 * 1.04 = 63.648 grams
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Bam added 8.91 g of CsCl to 34.29 mL of H2O. Calculate the concentration of Bam's solution in units of g solute/100 g solvent.
MWCsCl= 168.36 g/mol
MWH2O= 18.015 g/mol
Density of water= 0.9975 g/mL
The concentration of the solution is [tex]26.1 g CsCl/100 g H_2O[/tex].
We have 34.29 mL of water, whose density is 0.9975 g/mL. The corresponding mass of water is:
[tex]34.29 mL \times \frac{0.9975g}{mL} = 34.20 g[/tex]
8.91 g of CsCl (solute) are in 34.20 g of water (solvent). We can calculate the concentration of Bam's solution in units of g solute/100 g solvent, using the following expression.
[tex]C = \frac{mass\ solute }{mass\ solvent } \times 100 = \frac{8.91 g }{34.20 g } \times 100 = 26.1 g CsCl/100 g H_2O[/tex]
The concentration of the solution is [tex]26.1 g CsCl/100 g H_2O[/tex].
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Without using a calculator, decide which would give a significantly smaller value than 2.71 x 10^-2, which would give a significantly larger value, or which would give essentially the same value.
A. 2.71 x 10^-2 + 1.00 x 10^-6
B. 2.71 x 10^-2 - 1.00 x 10^-6
C 2.71 x 10^-2 x 1.00 x 10^-6
D. 2.71 x 10^-2 / 1.00 x 10^-6
Using the laws of indices, the 2.71 x 10^-2 x 1.00 x 10^-6 would give a significantly smaller value while 2.71 x 10^-2 / 1.00 x 10^-6 will give a significantly larger value.
The laws of indices can be used to solve problems that involves a base and an index.
In this case; if we apply the multiplication law;
[tex]2.71 x 10^-2 x 1.00 x 10^-6 = 2.71 x 10^-8[/tex]
This result is significantly smaller than [tex]2.71 x 10^-2[/tex]
Using the division law;
[tex]2.71 x 10^-2 / 1.00 x 10^-6 = 2.71 x 10^4[/tex]
This result is significantly larger than [tex]2.71 x 10^-2[/tex].
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4. Finally, convert hemoglobin concentration from g/dL to millimoles per Liter (milliMolar or mM). Hemoglobin has a molecular weight ~ 16,000 daltons. How many grams would need to be dissolved in 1 Liter of water to make a 1 Molar solution of hemoglobin
To make 1 Molar solution of hemoglobin ; 1600 grams of hemoglobin will be dissolved in 1 liter of water
The molecular weight of Hemoglobin is approximately 16,000 Daltons, when hemoglobin is converted to mM
16000 Dalton = 16000 ( g/mol )
given that 1 Dalton = 1 g/mol
To make 1 molar solution of hemoglobin using 1 liter of water
1 liter = 1000 grams
16000 Dalton = 16000 g/mol
Hence 16,000 grams of Hemoglobin is required to make 1 Molar solution of hemoglobin using 1 liter of water.
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Personal eyeglasses provide as much protection as Group of answer choices splash proof chemical goggles a face shield safety glasses none of the above
Answer:
none of the above
Explanation:
Correct answer please i need it before 12:07
Answer:
xenon
Explanation:
Xenon is a non-metal, odorless gas, consist of single atoms, colorless, and 8 valence electrons out of everything else on this list.
which
each these
A tame the
belong
a cha Cooth
group of Compounds to
acid
can boxylic
B) Catty
*
C2H4
Answer:
please I don't understand the question, rewrite it
When performing an experiment, what situation are close-toed shoes and goggles required.
A - When actively working with chemicals
B - When working with acids, flame or heat
C - When the teacher suggests a lab requires them
Help ASAP, Please And Thank You
Answer: A
Explanation:
I would do all of them but A is the true answer because if you wear like slides the chemical can get on your body and it will be bad so wear sneakers when working with labs.
Consider equal mole samples of dinitrogen monoxide, aluminum nitrate, and potassium cyanide. Arrange these compounds in increasing order of number of nitrogen atoms in each sample.
a. aluminum nitrate
b. potassium cyanide
c. dinitrogen monoxide
Answer:
potassium cyanide, dinitrogen monoxide, aluminum nitrate
Explanation:
How to find out how many neutrons an isotope has
Answer:
To find the number of neutrons in an isotope, subtract the number of protons from the atomic mass of the isotope. The atomic number of the element equals the number of protons.
Please help, due 7:00 AM
