Answer: 10 minutes
Explanation:
ln(No/N) = kt
No = 80 mg
N = 10 mg
t = 30 min
solve for k, then
k = 0.693/t1/2
Substitute k from above and solve for t1/2
10 min is correct.
Glucose is produced through the process of photosynthesis
and is shown below. How many atoms of hydrogen are
present in one molecule of glucose?
6
3
12
24
As shown in the picture, the chemical formula for glucose is C6H12O6. This means that there are 6 carbons, 12 hydrogens and 6 oxygens in one molecule of glucose.
Your Answer: 12
Is the reaction above a replacement reaction? Explain.
As the moon orbits the ______________, its gravitational pull is______________ on the side of the earth closest to the ______________.This ______________ force pulls on the water facing the moon,creating a ______________. The moon also ______________ on the solidearth, causing the water on the far side of earth to ______________as well. These bulges in the water are the ______________.The areas in between the close and far side of the earth which are not in ______________ with the moon experience ______________.
pls help i give brainlyest
Answer:
Earth
Strongest
Moon
Gravitational
Tide
Pulls
Bulge
Waves
Proximity
Low Tide
0.32 moles of oxygen gas has a temperature of 27°C and pressure of 2 atm in a closed container. What is the volume?
Answer:
3.9 L
First convert temperature to Kelvin
then use the ideal gas law
use algebra to solve for V
Since your solving for volume, your answer should be in Liters.
what kind of chemical reaction is this?
If a reaction is endothermic,
1 point
More energy is released when the bonds in the products are formed than is used to
break the bonds in the reactants
The temperature increases
The same amount of energy is used to break the bonds of the reactants as is released
when the bonds in the products are formed
О O
It takes more energy to break the bonds of the reactants than is released when the
bonds in the products are formed
Answer: It takes more energy to break the bonds of the reactants than is released when the bonds in the products are formed
Explanation:
Endothermic reactions are defined as the reactions in which energy of the product is greater than the energy of the reactants. The total energy is absorbed in the form of heat. Thus it takes more energy to break the bonds of the reactants than is released when the bonds in the products are formed
Exothermic reactions are defined as the reactions in which energy of the product is lesser than the energy of the reactants. The total energy is released in the form of heat. Thus More energy is released when the bonds in the products are formed than is used to break the bonds in the reactants
According to Banquo, the King "Sent forth great largess to your offices." What
gift does King Duncan bring for Lady Macbeth?
Answer:
Diamond
Explanation:
The answer is gotten from Act 2, Scene 1 of the play by Shakespeare titled "Macbeth". In this scene, we see that Banquo met Macbeth late in the night where they had a profound conversation about the gift of diamond which king Duncan had given to Banquo to deliver to Macbeth.
To investigate the effect of salt water on a cell, a researcher places one cell sample in freshwater and a second cell sample in salt water. After six hours, the researcher observes and sketches the two cells as shown. What change in the cells occurred during the six hours the cells remained undisturbed? A.Osmosis occurred in the salt water cell sample because the water from inside the cell moved out of the cell to a lower concentration, causing the cell to shrink. B.Osmosis occurred in the freshwater cell sample because the water from outside the cell moved into the cell to a higher concentration, causing the cell to grow. C.Osmosis occurred in the salt water cell sample because the salt from outside the cell moved into the cell to a lower concentration, causing the cell to shrink. D.Osmosis occurred in the freshwater cell sample because the salt from inside the cell moved out of the cell to a higher concentration, causing the cell to grow.
Answer:
MARK ME BRAINLIEST
Explanation:
MARK ME BRAINLIEST
Which system is responsible for the production of red blood cells?
hormone erythropoietin (EPO) is responsible for the production of red blood cells.
Calculate the percent by mass of benzene in a solution containing 14.2 g of benzene in 28.0 g of
carbon tetrachloride
Answer:
33.65%
Explanation:
total weight of solution=14.2+28=42.2g
benzene=14.2/42.2*100=33.65%
help plsssssssssssssssssssssss
Answer:
b chemical - thermal and mechanical
Explanation:
energy stored in food in is chemical, so it would only make sense of b) was the answer
How many lone pairs are in SO4 2-
Answer:
None
Explanation:
There are two S=O. bonds and two S-O bonds in sulfate ion lewis structure. Sulfur atom is the center atom and four oxygen atoms are located around sulfur atom. There are no lone pairs in the last shell of sulfur atom.
For the reaction, ?N2 + ?H2 → ? NH3,
What is the maximum amount of NH3 which could be formed from 12.26 mol of N2 and 2.11 mol of H2? Answer in units of mol.
Explanation:
➢number of moles. Moles and Chemical Reactions. Chapter 4. 3 H2. + N2. →. 2 NH3 ... How many grams of NH3 would form if 2.11 moles of N2 reacted with ...
How much heat is needed to warm 250g of water from 22℃ to 98℃?
Answer:
Thus, the required heat is 79kJ 79 k J .
Explanation:
i think its the right bottem one
How many particles are in one mole of copper (II) sulfate, CuSO4?
a 2.7 L of N2 is collected at 121kpa and 288 K . if the pressure increases to 202 kpa and the temperature rises to 303 K , what volume will the gas occupy?
Answer:
The gas will occupy a volume of 1.702 liters.
Explanation:
Let suppose that the gas behaves ideally. The equation of state for ideal gas is:
[tex]P\cdot V = n\cdot R_{u}\cdot T[/tex] (1)
Where:
[tex]P[/tex] - Pressure, measured in kilopascals.
[tex]V[/tex] - Volume, measured in liters.
[tex]n[/tex] - Molar quantity, measured in moles.
[tex]T[/tex] - Temperature, measured in Kelvin.
[tex]R_{u}[/tex] - Ideal gas constant, measured in kilopascal-liters per mole-Kelvin.
We can simplify the equation by constructing the following relationship:
[tex]\frac{P_{1}\cdot V_{1}}{T_{1}} = \frac{P_{2}\cdot V_{2}}{T_{2}}[/tex] (2)
Where:
[tex]P_{1}[/tex], [tex]P_{2}[/tex] - Initial and final pressure, measured in kilopascals.
[tex]V_{1}[/tex], [tex]V_{2}[/tex] - Initial and final volume, measured in liters.
[tex]T_{1}[/tex], [tex]T_{2}[/tex] - Initial and final temperature, measured in Kelvin.
If we know that [tex]P_{1} = 121\,kPa[/tex], [tex]P_{2} = 202\,kPa[/tex], [tex]V_{1} = 2.7\,L[/tex], [tex]T_{1} = 288\,K[/tex] and [tex]T_{2} = 303\,K[/tex], the final volume of the gas is:
[tex]V_{2} = \left(\frac{T_{2}}{T_{1}} \right)\cdot \left(\frac{P_{1}}{P_{2}} \right)\cdot V_{1}[/tex]
[tex]V_{2} = 1.702\,L[/tex]
The gas will occupy a volume of 1.702 liters.
1. What two types of cells contain chloroplasts?
Answer:
plant cells and eukroyatic algae
2
The current temperature, wind, precipitation and
other atmospheric conditions at any given time describes what?
A Controls
B Climate
C Tropics
D Weather
True or False: The reactants and the products of a chemical equation always have the same number of atoms.
Answer: True
Explanation: It always has the same number because the both have or are using the same product.
Can y’all helping me solving this l will make you the brainlest❤️
Answer:
Genotype = genetic makeup or allele combination
phenotype = physical appearance
homzygous = both alleles are the same
heterozygous = both alleles are different
dominant allele = represented by a capital letter
recessive allele = lowercase letter
The effective nuclear charge of a neutral atom aluminum, Al with atomic number 13 is
Answer:
wala hindi ko yan alam ty
High-speed winds transfer more energy to the ocean’s surface, creating bigger waves.
Question 10 options:
True
False
Answer:
I think that would be true. The faster the wind, the longer it blows, or the farther it can blow uninterrupted, the bigger the waves. Therefore, a wave's size depends on wind speed, wind duration, and the area over which the wind is blowing
Answer: True.
Explanation: Yes, waves get energy from the wind through friction, so you see those waves get bigger each time. The longer the winds blows, the more friction, and energy it's getting, meaning better, and deadly waves. The wind can sometimes cause tsunamis if the its blowing too hard.
A doctor tapes a patients knees with a hammer to test the reflex which can provide information about the condition of the _____
Answer:
lol this is what you get for not answering my question and stealing points
Explanation:
How much sugar can be dissolved of the 0.3 ml of water is heated to 1000C?
Give two examples of elevation.
Answer:
An example of elevation is a plane flying at 36,000 feet above the ground. An example of elevation is a pope being raised to the position of saint. An example of elevation is a ballet dancer leaping three feet in the air. ... At 8,850 m (29,028 ft), the summit of Mount Everest is the highest elevation on Earth.
Explanation:
please mark me brainly!
What happens when dilute sulphuric acid is poured on a copper plate?
A 3.56 L balloon is compressed to 1.00 L at constant temperature. If the initial pressure in the balloon was 101.3 kPa, what is the final pressure?
When magnesium is added to hydrochloric acid, a gas is formed. Explain what happens in the reaction, how the gas is collected and how it could be tested to prove what it is.
Answer:
Explained below.
Explanation:
Formula when magnesium reacts with hydrochloric acid is given by;
Mg(s) + 2HCl(aq) = MgCl2(aq) + H2(g)
So, from the equation, we can see that the gas formed is hydrogen.
This hydrogen gas is collected by a method known as water displacement.
This gas can be tested for by holding a burning splint near to the top of the test container. The resulting effect should be a high pitched pop sound because the hydrogen gas will react with the oxygen gas in the air to result in a small explosion.
Call each of your flowers as water employee increase rate of growth
Compare the seasons on Titan to the seasons on Earth.