Hello!
The answer is that they are a source of energy!
Hope this helps!
ILL IBE BRAINLY Asian Tsunami 2004:
2. In decomposition, how are other parts of the ecosystem affected?
3. Under which type of change would more organisms be able to survive? Why?
4. What are some positive effects of a rapid change to an ecosystem?
5. What are some positive effects of a slow change to an ecosystem?
Ammonium cyanate (NH4CNO) reacts to form urea (NH2CONH2). at 65 degrees celsius, the rate constant, K is 3.60 L mol^-1 s^-1. what is the rate law for this reaction
Answer:
v = 3.60Lmol⁻¹s⁻¹ [NH₄CNO]²
Explanation:
The reaction at 65°C of ammonium cyanate to produce urea is:
NH₄CNO → NH₂CONH₂
The general rate law is:
v = K [NH₄CNO]ˣ
Where v is rate of the reaction, K is rate constant and x represents the order of reaction
Based on the units of the rate constant (Lmol⁻¹s⁻¹ = M⁻¹s⁻¹) the reaction must be order 2 and the rate law:
v = K [NH₄CNO]²
v = 3.60Lmol⁻¹s⁻¹ [NH₄CNO]²
The abiotic factor is primary source of energy for all organisms.
Answer:
True, abiotic factors are the primary resources.
Answer: The abiotic factor sunlight is the primary source of energy for living organisms.
Explanation: edmentum/plato
Are strong acids more readily attracted to strong bases than to weak bases?
Compare Solution X to Solution A, Solution B, and Solution C. Beaker with a zoom view showing eight shperes, four groups of particles each consisting of two differently colored spheres. Beaker with a zoom view showing four spheres of a single color Beaker with a zoom view showing eight spheres of a single color Beaker with a zoom view showing eight shperes, two groups of particles each consisting of four spheres, three of one color and one of a different color. Which of the solutions have the same molar concentration as Solution X? C
Answer:
SOLUTION A
Explanation:
Molarity is one of the most common measure of concentration
The correct option that gives the solution that has the same molar concentration as solution X is the option;
Solution A
Reason:
The descriptions of the content or each beaker are;
Content of beaker X = Eight spheres of four groups of two differently colored spheres
Content of beaker with solution A = Four spheres of a single color
Content of beaker with solution B = Eight spheres of a single color
Content of beaker with solution C = Eight spheres in two groups of four having three spheres of one color and one sphere of a different color
The concentration of a solution given by the molarity is defined as the number of moles per liter of the solution
A mole is a quantity of matter that contains 6.023 × 10²² elementary particles
Considering each group of spheres as representing one mole of a substance, we have;
Beaker with solution X contains, Four moles containing two elements each, per volume of the solution, such as HClBeaker with solution A contains, four moles of a single (one) element compound per volume of the solutionBeaker with solution B contains, eight moles of a compound having one element eachBeaker with solution C contains, two moles having four elements each, three of one type and one of another element, such as CH₃Therefore, the solution that has the same molar concentration, (the same number of moles per volume of the solution) is solution A
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In a chemistry laboratory, a student filled a 10.0 L container with two (2) different gases. The
gases are nitrogen gas taken from 24.0 L container at 2.00 atm and 12.0 L container of
oxygen at 2.00 atm. If the temperature of the gases is 273 K, calculate the partial pressure
of both gases in the resulting mixture and the total pressure.
Answer:
[tex]P_N=1.33atm\\\\P_O=0.67atm[/tex]
[tex]P_T=2.00 atm[/tex]
Explanation:
Hello.
In this case, the first step is to compute the moles of nitrogen and oxygen given their initial P, T and V conditions via the ideal gas equation:
[tex]n_{N}=\frac{P_{N}V_{N}}{RT} =\frac{2.00atm*24.0L}{0.082\frac{atm*L}{mol*K}*273K}\\ \\n_{N}=2.144molN\\\\n_{O}=\frac{P_{O}V_{O}}{RT} =\frac{2.00atm*12.0L}{0.082\frac{atm*L}{mol*K}*273K}\\ \\n_{O}=1.072molO[/tex]
After that, since the total volume now, once the mixture is formed is the addition between the initial volumes (12.0 L + 24.0 L) is 36.0 L, the partial pressure of each gas turns out:
[tex]P_N=\frac{2.144mol*0.082\frac{atm*L}{mol*K}*273K}{36.0L}\\\\P_N=1.33atm\\\\P_O=\frac{1.072mol*0.082\frac{atm*L}{mol*K}*273K}{36.0L}\\\\P_O=0.67atm[/tex]
Thus, the final total pressure is:
[tex]P_T= P_N+P_O=1.33atm+0.67atm\\\\P_T=2.00 atm[/tex]
Best regards.
A tree burns down and forms ashes
Physical or
Chemical
Answer:
It is a chemical change.
Explanation:
A tree burning down would be a chemical change because the composition of the tree is what changes, not just the physical characteristics.
the sun warming the surface of a rock is
conduction
convection
radiation
Group the elements into pairs that would most likely exhibit similar chemical properties. It does not matter which pair of elements is pair 1, pair 2, or pair 3, so long as the correct elements are paired. elements are N, As, Br, Mg, Sr, F
The elements in a group containing similar physical properties are
Pair 1 -- K and Li
Pair 2 -- S and Te
Pair 3 -- Br and F
Those elements which belong to the same group in the periodic table have similar number of valence electrons in the last shell and such elements exhibit similar properties.Potassium(K) and Lithium(Li) belong to a similar group i.e group 1.Sulfur (S) and Tellurium (Te) belong to a similar group i.e. group 16.Bromine(Br) and Flourine (F) belong to a similar group i.e. group 17Elements in a group exhibit similar periodic properties be it physical or chemical.It is in accordance with the periodic rules.To learn more periodic properties visit:
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Test (Speed, Velocity and Acceleration)
A dog can run as fast as 15 miles per hour for a short distance. If a dog ran at this speed 0.10 of an hour, how far would it run?
Answer:
1.5 miles
Explanation:
Given that,
Speed of dog, v = 15 mph
Time taken by the dog, t = 0.1 h
We need to find the distance travelled by the dog. We know that, distance is the product of speed and time. So,
d=vt
[tex]d=15\times 0.1\\\\d=1.5\ \text{miles}[/tex]
Hence, the dog will cover a distance of 1.5 miles.
what is the formula for sodium hydrogen phosphate
Answer: Na2HPO4
Explanation: this is the formula
Answer:
Na3PO4
Explanation:.
12. What is the frequency of a photon with an energy of 3.03 x 10-19 J?
(Planck's constant: h=6.63x 10-34 J·s) (E =hu)
a. 1.98x10^-18 Hz
b. 4.58x10^14 Hz
c. 2.16x10^14 Hz
d. 4.39x10^-19 Hz
Answer:
[tex]u=4.57x10^5GHz[/tex]
Explanation:
Hello.
In this case, given the formula:
[tex]E=h*u[/tex]
Whereas E is the energy, h the Planck's constant and u the frequency of the photon. Thus, solving for it, we obtain:
[tex]u=\frac{E}{h}=\frac{3.03x10^{-19}J}{6.63x10^{-34}J*s}\\ \\u=4.57x10^{14}s^{-1}[/tex]
Or also:
[tex]u=4.57x10^{14}Hz*\frac{1GHz}{1x10^9Hz}\\ \\u=4.57x10^5GHz[/tex]
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How does a scientist make two solutions with the same molarity? A By dissolving the maximum amount of each substance in the B. By dissolving the same number of grams of each substance in the OC. By dissolving 1 mole of each substance in enough water to make same volume of water same volume of water sure dissolving is complete By dissolving the same number of nmoles of each substance in the same volume of water OD.
Answer: The answer is “ By dissolving the same number of nmoles of each substance in the same volume of water ”
Explanation:
By dissolving the same number of moles of each substance in the same volume of water. Hence, option D is correct.
Define the molarity of a solution.Molarity (M) is the amount of a substance in a certain volume of solution. Molarity is defined as the moles of a solute per litres of a solution.
Adding water to a solution and the number of moles of the solvent stay the same while the volume increases.
If there is no flow of solute into or out of the volume during the addition of the solvent, the number of moles of solute remains the same.
Hence, option D is correct.
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The net ionic equation for the reaction between aqueous nitric acid and aqueous sodium hydroxide is ________. The net ionic equation for the reaction between aqueous nitric acid and aqueous sodium hydroxide is ________. H+ (aq) + Na+ (aq) + OH- (aq) → H2O (l) + Na+ (aq) HNO3 (aq) + OH- (aq) → NO3- (aq) + H2O (l) H+ (aq) + HNO3 (aq) + 2OH- (aq) → 2H2O (l) + NO3- (aq) H+ (aq) + OH- (aq) → H2O (l) HNO3 (aq) + NaOH (aq) → NaNO3 (aq) + H2O (l)
Answer:
H+ (aq) + OH- (aq) → H2O (l)
Explanation:
The net ionic equation is the main reaction going on in the system. The reaction between nitric acid and sodium hydroxide is a neutralization reaction.
In a neutralization reaction, the main reaction is the combination of hydrogen ions and hydroxide ions to form water. This reaction has been shown in the answer box.
If I initially have a gas at a pressure of 10.0 atm, a volume of 24.0 liters, and a temperature
of 200. K, and then I raise the pressure to 14.0 atm and increase the temperature to 300. K,
what is the new volume of the gas?
Answer:
The new volume of gas is 25.7 L.
Explanation:
Given data:
Initial volume = 24.0 L
Initial pressure = 10.0 atm
Initial temperature = 200 K
Final temperature = 300 K
Final volume = ?
Final pressure = 14.0 atm
Formula:
P₁V₁/T₁ = P₂V₂/T₂
P₁ = Initial pressure
V₁ = Initial volume
T₁ = Initial temperature
P₂ = Final pressure
V₂ = Final volume
T₂ = Final temperature
Solution:
V₂ = P₁V₁ T₂/ T₁ P₂
V₂ = 10.0 atm × 24.0 L × 300K / 200 K × 14.0 atm
V₂ = 72000 atm .L. K / 2800 K.atm
V₂ = 25.7 L
The new volume of gas is 25.7 L.
If the heat of fusion for water is 334 j/g, how many Jules are needed to melt 45.0 g of ice at 0.0°c?
Given parameters:
Heat of fusion of water = 334j/g
Mass of ice = 45g
Temperature of ice = 0.0°c
Unknown:
Amount of heat needed to melt = ?
Solution:
This is simply a phase change and a latent heat is required in this process.
To solve this problem; use the mathematical expression below;
H = mL
where m is the mass
L is the heat of fusion of water;
H = 45 x 334 = 15030J
write 0.006 in exponential form
[tex]\huge\pink{Answer}[/tex]
0.0006 in scientific notation is 6 × 10-4
Step by step Explanation:All numbers in scientific notation or standard form are written in the form
m × 10n, where m is a number between 1 and 10 ( 1 ≤ |m| < 10 ) and the exponent n is a positive or negative integer.
To convert 0.0006 into scientific notation, follow these steps:
Move the decimal 4 times to right in the number so that the resulting number, m = 6, is greater than or equal to 1 but less than 10
Since we moved the decimal to the right the exponent n is negative
n = -4
Write in the scientific notation form m × 10n
= 6 × 10-4
Therefore,
6 × 10-4 is the scientific notation form of 0.0006 number and 6e-4 is the scientific e-notation form for 0.0006
HOPE IT HELPS ☺️PLEASEEEEEEEEEEEEEEEEEEEE im slow i'll give you brainliest if you answer idkk what to do
a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.
Compound:A compound is a material formed by chemically bonding two or more chemical elements. The type of bond keeping elements in a compound together may vary: covalent bonds and ionic bonds are two common types. The elements are always present in fixed ratios in any compound.
Element:Chemical element, also called element, any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the fundamental materials of which all matter is composed.
Mixture:is a material made up of two or more different substances which are physically combined.
Chemical Formula:A chemical formula identifies each constituent element by its chemical symbol and indicates the proportionate number of atoms of each element. I
Pure substance:A substance that has a fixed chemical composition throughout is called a pure substance such as water, air, and nitrogen.
hope this help!
Answer:
Here are the definitions of all of them.
Explanation:
Molecule:
a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.
Compound:
A compound is a material formed by chemically bonding two or more chemical elements. The type of bond keeping elements in a compound together may vary: covalent bonds and ionic bonds are two common types. The elements are always present in fixed ratios in any compound.
Element:
Chemical element, also called element, any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the fundamental materials of which all matter is composed.
Mixture:
is a material made up of two or more different substances which are physically combined.
Chemical Formula:
A chemical formula identifies each constituent element by its chemical symbol and indicates the proportionate number of atoms of each element. I
Pure substance:
A substance that has a fixed chemical composition throughout is called a pure substance such as water, air, and nitrogen.
Suppose during volleyball practice, you drank 900 grams of water. If your body released 800 calories of energy into the water, what would be the temperature change of the water?
Answer:
75 degrees
Explanation:
A student trying to determine if a liquid was a mixture or a pure substance made several following observations. Which observation would best support the conclusion that the liquid was a mixture?
Answer:
Distillation
Explanation:
By using the method of distillation we'll identify if there is other properties of liquid by looking the temperatures,the ordor or the boiling point.
Which carries information by copying an original sound?
Answer:
frequency
Explanation:
i just did it
Answer:
A: analog signal
Explanation:
on edge2021!
The isotopes K-37 and K-42 have the same
A container of hydrogen at 172 kPa was decreased to 85.0 kPa producing a new volume of 3L. What was the original volume?
Answer:
The answer is 1.48 LExplanation:
In order to find the original volume we use the same for Boyle's law which is
[tex]P_1V_1 = P_2V_2[/tex]
where
P1 is the initial pressure
P2 is the final pressure
V1 is the initial volume
V2 is the final volume
Since we are finding the original volume
[tex]V_1 = \frac{P_2V_2}{P_1} \\[/tex]
From the question
P1 = 172 kPa = 172000 Pa
P2 = 85 kPa = 85000 Pa
V2 = 3 L
We have
[tex]V_1 = \frac{85000 \times 3}{172000} = \frac{255000}{172000} = \frac{255}{172} \\ = 1.482558139...[/tex]
We have the final answer as
1.48 LHope this helps you
Question 2
1 pts
Which compound would you predict to be most soluble in water and why: NH,Br or NHACI?
Assume Br is larger than CI.
O NH Br because the distance between the lons is shorter
O NH Br because the distance between the lons is longer
These are equally soluble because their lons have the same charge
O NH CI because the distance between the lons is longer
O NHACI because the distance between the lons is shorter
How do you round 3795 to THREE sig figs?
Answer:
The answer is 380.
Explanation:
Significant figures:
All non-zero digits are consider significant figures like 1, 2, 3, 4, 5, 6, 7, 8, 9.
Leading zeros are not consider as a significant figures. e.g. 0.06 in this number only one significant figure present which is 6.
Zero between the non zero digits is consider significant like 108 consist of three significant figures.
The zeros at the right side e.g 6300 are also significant. There are four significant figures are present.
How to round the value to three significant figures.
First of all we will place the vertical line after 3rd digit.
379/5
Now we will look at the 4th digit. If it is five or more than five then one is added to 3rd digit. If it is less than five the 3rd digit remain same. In given value 4th digit is 5 thus one is added into 9 and the value become 380.
The answer is 380.
Complete and balance each of the following equations for acid-base reactions.
H3PO4(aq) + Sr(OH)2(aq) →
Explanation:
Sr(OH)2 + H3PO4 = Sr3(PO4)2 + H2O - Chemical Equation Balancer.
Answer:
3Sr(OH)2 + 2H3PO4 → Sr3(PO4)2 + 6H2O
Explanation:
please check the image for accurate answer
1. 500 grams of sugar occupies a volume of 315 ml. What is the density of the sugar in g/mL? Show
your work.
Answer:
The answer is 1.59 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\[/tex]
From the question
mass = 500 g
volume = 315 mL
We have
[tex]density = \frac{500}{315} = \frac{100}{63} \\ = 1.587301...[/tex]
We have the final answer as
1.59 g/mLHope this helps you
what is it called when you apply science and mathematics to real life problems
Answer:
I think S.T.E.M but i'm not 100% sure
Explanation:
The greater the amount of mass an object has, the more force is needed to move it.
Answer: Newtons Second Law states that acceleration is produced when a force acts on a mass. The greater the mass (of the object being accelerated), the greater the amount of force needed to accelerate the object (bullet in our case). Everyone inherently knows that heavier objects require more force to move the same distance as lighter objects.
Explanation:
how many protons electrons and nuetrons does as have