86400 seconds
God bless
Answer:
86400 seconds
Explanation:
One day = 24 hours
24 hours = 1440 minutes (can be calculated by multiplying 24 and 60)
1440 minutes = 86400 seconds (can be calculated by multiplying 1440 and 60)
Black cloth will appear red through a red glass.
True or False
Answer:
false.
Explanation:
black overlays any color.
which of the following processes within the water cycle is responsible for changing water from a gas to a liquid
A. evaporation
B. condensation
C. precipitation
D. vaporization
Answer:
condensation is the process from which gas changes to liquid
Please help I’ll mark you as brainliest if correct
Answer:
Explanation: Okay what do you need help with im sure i can help.
Answer:
A
Explanation:
....................'''..
During what phase of meiosis does the DNA coil into visible chromosomes?
O prophase
O anaphase
O metaphase 1
o telophase!
Answer:
prophase
During prophase, the complex of DNA and proteins contained in the nucleus, known as chromatin, condenses. The chromatin coils and becomes increasingly compact, resulting in the formation of visible chromosomes.
Answer:
prophase I
Explanation:
list 5 of the signs that can identify the evidence of a chemical change.
Answer:
here are some ideas <3
Explanation:
burning of paper.
cooking of food
burning of wood
rotting of fruits.
frying egg
rusting of iron
mixing acid and base.
burning of candle
leaves changing color
melting of sugar.
baking
explosion of fireworks.
souring milk
digestion of food
fermentation
lighting matchstick
photosynthesis
decomposition of waste
Consider the energy diagram below.
A graph with Reaction Progression on the x axis and Energy on the y axis. A line starts low on the y axis; this section runs horizontally and is labeled A. It rises sharply to a high round peak labeled C. A dotted line continues the initial line to a higher peak Over C, labelled B, and then falls back to the original line, which continues horizontally; this section is labeled D.
Which statement best describes the diagram?
The catalyzed reaction passes through C.
The energy of the catalyst is shown by A.
The reaction pathway through B is faster.
The energy of the reactants with catalyst is at D.
The statement best describes the diagram is the catalyzed reaction passes through C. Therefore, option A is correct.
What is an energy diagram ?An energy profile is a theoretical representation of a chemical reaction or process as a single energetic pathway as the reactants are transformed into products in theoretical chemistry.
The amount of relative potential energy in each step of a reaction is depicted by an energy diagram. Reactants, transition states, and products are typically depicted on energy diagrams. It may also include intermediates and activation energy, depending on the reaction.
There are two lines on the energy level diagram. The blue line denotes ground state energy, while the red line denotes excited state energy. The horizontal axis represents orbital energy, and the vertical axis represents total system energy.
Thus, option A is correct.
To learn more about an energy diagram, follow the link;
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How to prepare 0.2mol of iodine in 13gram of the solution
Answer:
Hope this helps
Explanation:
A structure that can lessen erosion is
Answer:
A structure that can lessen erosion is a plant cover :3
Explanation:
:3
Which molecule does not obey the Octate rule of valence electrons .
BeCl2
FeCl2
CuCl2
ZnCl2
Answer:
C po Hope it helps salamat
Samantha plants some flowers in a flower bed and then ignores them. Soon weeds grow and the flowers die. The weeds had been able to get
enough resources to survive, while the flowers had not. This is an example of
O A) competition
OB) population size
OC) habitat
O D) community
Answer: The answer is actually competition
Explanation:
So she plants the flowers, then ignores them, not taking care of them. So when the weeds start to grow, and if they aren't pulled out, they start to steal the water from the flowers. So the flowers would try to take it back, but the weeds, because Samantha isn't taking care of them and pulling them out, keep growing. This lets the weeds take more water, causing the flowers to die.
How Many moles of oxygen(02) are needed to produce 4.6 g of nitrogen monoxide (NO)?
3.36 mol
0.768 mol
0.233 mol
0.192 mol
Answer: .768
Explanation:
I didn’t get this one right but that’s the answer.
Hand lighters contain butane gas. If a hand lighter contains butane gas at 2.50 atm of
pressure at 293°K, then what would be the new pressure of the lighter if it were left in a
hot car at 393°K? If the lighter was designed to hold only 3.00 atm of pressure, would
it explode? Assume the volume does not change, until it possibly explodes!
Answer:
3.35 atm
Since P₂ > 3.00 atm, the lighter would explode.
Explanation:
Step 1: Given data
Initial pressure of butane gas (P₁): 2.50 atmInitial temperature of butane gas (T₁): 293 KFinal pressure of butane gas (P₂): ?Final temperature of butane gas (T₂): 393 KStep 2: Calculate the final pressure of butane gas
If we assume ideal behavior, we can calculate the final pressure of butane gas using Gay Lussac's law.
P₁/T₁ = P₂/T₂
P₂ = P₁ × T₂/T₁
P₂ = 2.50 atm × 393 K/293 K = 3.35 atm
Since P₂ > 3.00 atm, the lighter would explode.
Which statements true about the total mass of the reactants during a chemical change? (5 points)
0
his destroyed during chemical reaction,
It is less than the total mass of the produce
It is equal to the total mass of the products,
is greater than the total mass of the products
5 points
1. In this food pyramid, how much energy is available as the energy is
passed from one trophic level to another?
Energy pytanid
O 1%
10%
оооо
25%
O 50
Answer:
I'm purty sure it's 10% Cause that is what my teach said.
Explanation:
Have a good day fern!!!!
Can someone please solve this????? It's true or false
Answer:
True true false true true true flase, false
Explanation:
Determine the mass in grams of 3.45 x 10^2 mol Co.
Answer:
molar mass CO = 28.01 g/mol
3.45 x 10^2 x 28.01 =9.66 x 10^3 g
mass Zn = 2.45 x 10^-2 x 65.39 g/mol=1.60 g => 1.60 x 10^0
Explanation:
mark me as brainlest
One mole of cobalt weighs 58.9 grams. Hence the mass in grams of 345 moles of cobalt is 20320.5 g.
What is cobalt?Cobalt is 27th element in periodic table. It is place in d- block of periodic table and is termed as transition metal. Transition metals sows variable oxidation states.
The atomic number of cobalt is 27. Thus, it contains 27 protons and 27 electrons. The mass number is 57. The mass of a given number of moles of an element can be calculated by multiplying its atomic mass by number of moles.
The atomic mass of cobalt = 58.9 g/mol
The mass of one mole of cobalt is 58.9 g/mol.
Thus, the mass of 345 moles of cobalt is calculated as follows:
mass of 345 moles of Co = 345 mol × 58.9 g/mol = 20320 g.
Therefore, the mass of cobalt in 345 moles is 20320 grams.
To find more on cobalt, refer here:
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how many mols of K+ ions in 1.75 mol of K2SO4
Answer:
[tex]3.5 mol K^+[/tex]
Explanation:
Hello there!
In this case, since the mole-mole rations consider the amount of the specific ion in the whole compound, we can evidence that the potassium sulfate has two potassium ions in the molecule; in other words, there is a 1:2 mole ratio of the former to the latter; in such a way, we can perform the following proportional factor:
[tex]1.75molK_2SO_4*\frac{2molK^+}{1molK_2SO_4}[/tex]
So we cancel out moles of potassium sulfate to obtain:
[tex]3.5 mol K^+[/tex]
Best regards!
what happens when a gas is heated in a closed metal container
Answer:
Hope this helps!!
Explanation:
Molecules of a gas move randomly. In a sealed container they exert a force when they collide with the container walls and this applies a pressure to the container. If the cylinders heat up enough, their pressure will increase and they will explode.
In order to murder somebody in the bathtub, police say that the suspect would need at least 50,000 grams of water. Was there enough water? Can Steve be the murderer? 2 H2 + O2 -------> 2H20 Police said that there were 5,000 grams of H2 in the room. Convert grams of hydrogen into grams of water and see if there was enough.
Answer:
um, not sure how to answer this haha
Explanation:
What is the work when a gas expands from 0.666 L to 2.334 L against an external pressure of 2.07 atm?
Answer:
work = 3.45 Joules
Explanation:
Work from the 1st Law of Thermodynamics is PΔV in the equation of internal energy => ΔE = ΔH + PΔV.
Therefore, work = PΔV = 2.07atm·(2.334L - 0.666L) = 3.45 L·atm = 3.45 Joules
A gas occupying a volume of 656.0 mL at a pressure of 0.884 atm is allowed to expand at constant temperature until its pressure reaches 0.510 atm. What is its final volume?
Answer:
1.14 × 10³ mL
Explanation:
Step 1: Given data
Initial volume of the gas (V₁): 656.0 mLInitial pressure of the gas (P₁): 0.884 atmFinal volume of the gas (V₂): ?Final pressure of the gas (P₂): 0.510 atmStep 2: Calculate the final volume of the gas
If we assume ideal behavior, we can calculate the final volume of the gas using Boyle's law.
P₁ × V₁ = P₂ × V₂
V₂ = P₁ × V₁/P₂
V₂ = 0.884 atm × 656.0 mL/0.510 atm = 1.14 × 10³ mL
How many Hg atoms are in 1.2mol Hg?
Plz tell me how you got it
Answer:
12
Explanation:
12
How can you determine the number of protons and neutrons in an isotope when given the symbol and mass number?
Which of the following is the BEST title for the concept map shown above?
A. sexual reproduction in humans
B. mitosis in humans
C. meiosis in humans
D. sex cell formation in humans
Answer:
the answer is b mitosis in humans
What is an “eye spot”
Answer:
Usually small spot of color (as on the wing of a butterfly) that resembles an eye.
a light-sensitive pigmented spot on the bodies of invertebrates such as flatworms, starfishes, and microscopic crustaceans, and also in some unicellular organisms.
Four students are carrying out different laboratory procedures.
-Piroja is mixing baking soda and vinegar
-Jason is heating water
-Kali is putting crushed ice and ice cubes on a table
-Francisco is separating iron filings.
Which experiment relies on convection?
A) Piroja
B) Jason
C) Kali
D) Francisco
THE CORRECT ANSWER IS B. JASON’S EXPERIMENT
#edge2021 unit test review 100%
Answer:
B: Jason's experiment
Explanation:
I did the Unit test review
the best example of unbalanced forces is?
79.2 L of a gas are contained at STP. How many moles are present in the container?
Answer:
3.54 mol
Explanation:
When at STP (Pressure of 1 atm & T of 273.16 K), one mol of any given gas occupies 22.4 liters.
With the above information in mind we can calculate the number of moles, using the factor 22.4 L/mol:
79.2 L ÷ 22.4 L/mol = 3.54 mol
There are 3.54 moles of the gas present in the container.
Calculate the number of moles in 23.8 grams of Nitrogen, N.
Group of answer choices
a 1.70
b 1.43x10^25
c 333
d 3.95x10^-23
Answer:
n = 1.7 moles
Explanation:
Given mass, m = 23.8 grams
Molar mass of Nitrogen = 14 g/mol
Let there is n number of moles. We know that,
No. of moles = given mass/ molar mass
[tex]n=\dfrac{23.8}{14}\\\\n=1.7[/tex]
So, there are 1.7 moles in 23.8 grams of Nitrogen.
Calculate the pH of a 0.187 M solution of a base that has a Kb = 5.86x10^-6
Answer:
[tex]pH=11[/tex]
Explanation:
Hello there!
In this case, since the ionization of the described base is:
[tex]base+H_2O\rightarrow OH^-+baseH^+[/tex]
Thus, the equilibrium expression in terms of the reaction extent is:
[tex]Kb=5.86x10^{-6}=\frac{x^2}{0.187-x}[/tex]
Thus, by solving for x we obtain:
[tex]5.86x10^{-6}({0.187-x})=x^2\\\\1.10x10^{-6}-5.86x10^{-6}x-x^2=0[/tex]
So the values of x are:
[tex]x_1=0.0010M\\x_2=-0.0010M[/tex]
So the feasible answer is 0.0010 M, thus we compute the pOH:
[tex]pOH=-log(0.0010M)=3[/tex]
And therefore the pH:
[tex]pH=14-pOH=14-3\\\\pH=11[/tex]
Best regards!