Answer:
Try everything
1.42 x 10^24 molecules
1.78 x 10^28 molecules
7.04 x 10^23 molecules
14.2 x 10^24 molecules
Explanation:
What human actions contributed to the nutrient pollution of Lake Okeechobee?
PLZ HELP MEEEEEEEEEEEEEEEE I BEG YOU
Answer:
These trends were attributed to both the increased external loads and to a reduction in the lake sediment's ability to assimilate nutrients from the water column. The main sources of external nutrient inputs are animal waste and fertilizers applied to food and forage crops.
1 point
2. Due to its intricate network, minerals with sheet of tetrahedron do not
easily separate. *
True
False
Help PLs thnk you!!!!!!!!!!!!!!!!!!!!!!!!
Since I'm a tomboy, does that mean I'm gender non-conforming?
Answer:
Hello
Explanation:
I am a girl,not a tomboy.
Will we talk about something?
Question 1 of 10
What do biologists study?
A. Living things
B. The properties of light
C. The properties of matter
D. How matter and energy interact
SUBMIT
Answer:
A
Explanation:
Biology is the study of living things.
find the moler mass of P2S3
Answer:
158.2 g/mol
Explanation:
10. Which of these elements is the most electronetative?
(10 Points)
Nitrogen
Calcium
Bromine
O Aluminum
To prepare 800mL of 1M phosphate buffer of pH 7.2 (PKa=7.1), by using salt = K2HPO4 and acid = KH2PO4, the quantity of salt required is
Answer:
78.04g of 0.448 moles must be added
Explanation:
Using H-H equation we can find the pH of the buffer:
pH = pKa + log [A⁻] / [HA]
Where pH is the pH of the buffer = 7.2
pKa = 7.1
[A⁻] = [K₂HPO₄]
[HA] = [KH₂PO₄]
Replacing:
7.2 = 7.1 + log [K₂HPO₄] / [KH₂PO₄]
0.1 = log [K₂HPO₄] / [KH₂PO₄]
1.2589 = [K₂HPO₄] / [KH₂PO₄] (1)
And as the concentration of the buffer is:
1M = [K₂HPO₄] + [KH₂PO₄] (2)
Replacing (2) in (1):
1.2589 = 1M - [KH₂PO₄] / [KH₂PO₄]
1.2589 [KH₂PO₄] = 1M - [KH₂PO₄]
2.2589 [KH₂PO₄] = 1M
[KH₂PO₄] = 0.44M
And [K₂HPO₄] = 0.56M
In 800mL = 0.8L:
0.8L * (0.56mol / L) = 0.448 moles K₂HPO₄. The mass is -Molar mass K₂HPO₄: 174.2g/mol-:
0.448 moles * (174.2g / mol) =
78.04g of 0.448 moles must be addedWhat is a function of the backbone in animals?
A. It protects against predators.
B. It regulates blood glucose.
C. It surround the spinal cord.
D. It limits movement.
1. Sequence Order the path of a sound wave
from when it is produced by a source until
it is interpreted by the brain
Answer:1. The sound waves arrive at the pinna (auricle), the only visible part of the ear.
2. Once the sound waves have passed the pinna, they move into the auditory canal (external
acoustic meatus) before hitting the tympanic membrane (eardrum).
3. Once the sound waves reach the tympanic membrane, it begins to vibrate and they enter
into the middle ear.
4. The vibrations are transmitted further into the ear via three bones (ossicles): malleus
(hammer), incus (anvil), and the stapes (stirrup). These three bones form a bridge from
the tympanic membrane to the oval window.
5. Once sound passes through the oval window, it enters into the cochlea in the inner ear.
6. Hair cells in the organ of Corti (within the cochlea) are stimulated which in turn
stimulates the cochlear branch of the vestibulocochlear nerve.
7. The cochlear nerve then transmits electrical impulses to the auditory region of the brain
in the temporal lobe.
Explanation:
This is science talking about rocks
extrusive
or
Intrusive
in the reaction :N2 + 3H2----2NH3 how many grams of H2 are needed to produce 1 mole on ammonia
The number of grams that are needed to produce 1 mole on ammonia is to be considered as the 1.52 g Hz.
Calculation of the number of grams:Here we begins the moles of ammonia for production after this it convert the number of moles of h2 for getting one mole of ammonia and then finally convert into grams
So it be like
[tex]= 1\ mol NH_3 \frac{3H_2}{2NH_3}\frac{1.01g }{1\ mol H_2}[/tex]
= 1.52 g Hz
Hence, The number of grams that are needed to produce 1 mole on ammonia is to be considered as the 1.52 g Hz.
Learn more about grams here: https://brainly.com/question/10822689
All three types of worms that undergo asexual reproduction use which process?
binary fission
budding
fragmentation
spore formation
Answer:
binary fission
Explanation:
i just took the quiz
2. When two oppositely charged particles are brought near each other, they produce a torceted the stone
shows the force around two changed particles
Which force do the arrows represent?
A an unbalanced force
B. a frictional force
C.an electrical force
D.a gravitational force
Answer:
A
Explanation:
An unbalanced force is your answer.
What are facts about Cells
fill in the blank question
please help asap!!!!!!!!!!!!!!
Answer:
since unlike charges attract, negative side of another water molecule, neutral
Identify what type of reaction is this
2AgCl + H2 → 2Ag + 2HCI
Answer:
single displacement
Explanation:
What type of energy does each ball have before it falls
Can somebody please draw a mechanism for this reaction (synthesis of varenicline)?
Answer:
that is kinda hard I need to serch it up hold on
Is a large body of flowing water ;created by many smaller flowing together. Aquifer
Answer:
alll I really know is that it includes smaller pools of water
How do you know when a redox equation is balanced?
How many oxygen atoms are in diiodine heptoxide?
Answer:
there are seven oxygen atoms
Explanation:
look look at the prefix hept- to help you answer this question
Arrange the following atoms in order of decreasing atomic radius
Answer:
li
be
na
si
s
............. ..
When energy is released by the pack, what happens to the energy of the surroundings (outside the pack)?
a. The energy increases
b. The energy decreases
c. The energy stays the same
Answer:
a
Explanation:
i hope that's correct
The energy of the surroundings (outside the pack) will:
a. The energy increases, when energy is released.
Energy in the surroundings:Energy is delivered to create bonds, which is the reason the enthalpy change for it is positive to break bonds. Energy is expected to break bonds. Particles are a lot more joyful when they are "wedded" and discharge energy since it is simpler and more steady to be seeing someone.
When energy is released, the energy in the surroundings will increase.
Thus, option a is correct.
Find more information about Energy here:
brainly.com/question/25959744
Please help me i really need help
Answer:
H2o i think
Explanation:
Venus is the second planet from the Sun. It takes about 225 days for it to complete one revolution. What would make Venus have a longer revolution?
if Venus rotated slower
if Venus were closer to the Sun
if Venus rotated faster
if Venus were farther away from the Sun
Answer:
if venus were farther away from the sun
Explanation:
it is because far the planet is long the orbit is which make revolution longer
9. Do all enzymes function at the same pH?
Each enzyme has an optimum pH but it also has a working range of pH values at which it will still work well. This depends on the type of enzyme. The enzyme pepsin breaks down proteins in the acidic conditions of the stomach. ... Catalase has an optimum pH of 9 and a working range of between pH 7-11. Hope this was helpful
Explanation:
Which statement best explains a way in which a cell gets rid of wastes?
Answer:
I would say B but you don't have to take my word for it
Answer:
D
Explanation:
A student is studying the ways different elements are similar to one another. Diagrams of atoms from four different elements are shown below. Nucleus Nucleus Atom 1 Atom 2 Nucleus Nucleus Atom 3 Atom 4
Answer:
atom 1 and atom 2
Explanation:
Help only if you know the answer
Answer:
velocity
Explanation: