Answer:
H2O: Just Add Water for me
Explanation:
I loved Mako Mermaids too, though I thought the spinoff was lazy with conforming to the canon; how could the pod have inhabited Mako Island for thousands of years but were never seen in H2O?
Why does photosynthesis require 6 molecules of carbon dioxide and 6 molecules of water to make 1 molecule of glucose
For each molecule of glucose produced: 6 water water molecules are oxidized, and come to be the supply of electrons for carbon dioxide reduction. 6 molecules of carbon dioxide are required, one for every carbon atom in glucose. 6 molecules of oxygen are produced as a with the aid of made from water oxidation.
The law of reflection states that the angle of incidence and the angle of reflection are always
Answer:
The law of reflection states that the angle of incidence and the angle of reflection are always equal.
How many moles of gas is contained in 2.21 L at STP?
Answer:
its an helium gas are contained in a 4.0L at STP? 0.17
Explanation:
because the elements in column 2.21 is what quantity of gas in holes
I NEED HELP ASAP!! What is the difference between the experimental group and a control group?
I believe the control group is what doesn't change in the experiment, and the experimental group is what is being tested / receives the treatment :)
Albino trees exist in nature, but they’re rare. These trees contain a gene mutation that causes them to lack chlorophyll, so their leaves are white. In California, albino redwood trees are parasites. They survive off the energy from nearby redwood trees. Why do you think they need to use energy from other trees to survive?
Answer:
They need to use energy from other tress to survive so that they can do basic functions, like absorbing nutrients from the ground, and growing back leaves. They don't have chlorophyll, so they need that energy to do the functions I mentioned above.
Explanation: Hope this helps!
Answer:
Trees need chlorophyll to make energy. Because albino trees don’t have chlorophyll, they can’t create their own energy. So, they must take energy from other trees to survive.
Explanation:
A reaction is first order with respect to reactant A and second order with respect to reactant B. Starting with [A] = 0.175 M and [B] = 0.00250 M, the reaction rate is 2.83 x 10−5 M.S−1. What is the rate constant k? Show your work.
Answer:
[tex]k=25.9M^{-2}s^{-1}[/tex]
Explanation:
Hello there!
In this case, since rate laws are written by considering the rate constant, concentration and specific orders of reaction of the concentration of the species contributing to the rate of reaction, we write:
[tex]r=k[A][B]^2[/tex]
Since it is first-order with respect to reactant A and second-order with respect to reactant B. In such a way, given the rate and concentrations of both A and B, the involved rate constant k turns out to be:
[tex]k=\frac{r}{[A][B]^2} \\\\k=\frac{2.83x10^{-5}M/s}{(0.175M)(0.00250M)^2}\\\\k=25.9M^{-2}s^{-1}[/tex]
Best regards!
How many Joules are required to heat 40g of water from 13°C to 40°C?
J
Answer: 1080
Explanation:
you have to subtract 40 from 13 frist then multiply the remins of the temeture with 40 and your answer is 1080
PLEASE HELP
A student labels two 250 milliliter beakers with the letters A and B. She puts 100 milliliters of water in each of them. She adds some salt to beaker A and stirs until the salt dissolves completely. Then she adds another 50 milliliters of water to beaker A. She adds more salt to beaker B, and the salt in beaker B doesn't completely dissolve in the water even after much stirring. The solution in beaker A is The solution In beaker B is
Answer:
Solution B is saturated and solution A is unsaturated
Explanation:
Saturated solution contains the maximum concentration of a solute dissolved in the solvent (usually water) and if extra solute is added to saturated solution, that solute will not dissolve.
Unsaturated solution means that more of a substance can be dissolved (in this example salt).
PLEASE NO LINKS OR FILE SCAMS
what is the balanced equation for CuSO4 + 2NaOH → Cu(OH)2 + Na2SO4 I just want the answer please help
The fictional element “Nt” contains atoms with two valence electrons. Which type of intermolecular force is most likely responsible for the properties of NtF2?
O dipole-dipole forces
O ion-ion forces
O hydrogen bonding
O dispersion forces
PLZZZZZZZZ HELP PLZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ PLZ PLZ PLZZZZZZZ these are satellite images taken of the same area in 1986 and in 2020 what can these images be used to monitor
Answer:
I believe it is how land use changed over time
Explanation:
The images only show us the labels of communities and farm land/ forests. There is no evidence to support that this map would be monitoring water quality, pollution, etc. The only visible change is the change in land.
Describe the difference between a flask, beaker, and graduated cylinder.
How does the purpose of each differ?
Answer:
Both graduated cylinders and beakers are pieces of laboratory glassware that have a specific function. Graduated cylinders typically are more accurate at reading the volumes of the liquid inside. Beakers are better for stirring and mixing liquids.
Flasks are notable for their unique shape: a rounded vessel and a cylindrical neck. The main differing characteristic between a flask and a beaker is that beakers have straight sides, rather than slanted sides like a flask. Beakers are mainly for measuring and transporting liquids from one site to the next.
Explanation:
hope this helps!!!!
PLEASE HELPPP WILL GIVE BRAINLIEST!!!
Answer:
placental mammals
Explanation:
Answer:
B) placental mammals
Explanation:
What is one thing that is the same about a mole of sodiums and a mole of carbons?
A) The weight
B) All of these
C) The total number of atoms
D) The mass
What causes the difference in density of matter?
Answer:
because it has more space
Explanation:
density have many pressure
1. How many grams are in 1.7 x 10^23 particles of Cl2?
2. How many moles are in 3.28 x 10^23 atoms of NaCl? *
3. If I were to determine how many liters 26 grams of water is, what type of conversion would this be? *
A Mass --> Moles --> Particles
B Mass --> Moles --> Volume
C Volume --> Mass --> Moles
D Moles --> Mass --> Volume
Answer: 1. 20.0 grams
2. 0.272 moles
3. B) Mass --> Moles --> Volume
Explanation:
According to avogadro's law, 1 mole of every substance weighs equal to molecular mass and contains avogadro's number [tex]6.023\times 10^{23}[/tex] of particles.
To calculate the number of moles, we use the equation:
[tex]\text{Number of moles}=\frac{\text{Given molecules}}{\text{Avogadros number}}[/tex] or
[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}[/tex] or
Putting in the values we get:
1. [tex]\text{Number of moles of} Cl_2=\frac{1.7\times 10^{23}}{6.023\times 10^{23}}=0.282moles[/tex]
Mass of [tex]Cl_2=moles\times {\text {Molar mass}}=0.282mol\times 71g/mol=20.0g[/tex]
2. [tex]\text{Number of moles of NaCl}=\frac{3.28\times 10^{23}}{2\times 6.023\times 10^{23}}=0.272moles[/tex]
3. [tex]\text{Number of moles of water}=\frac{26g}{18g/mol}=1.44moles[/tex]
Volume of water =[tex]moles\times {\text {Molar volume}}=1.44mol\times 22.4L/mol=32.4L[/tex]
What factor determines whether an acid or base is strong or weak?
A)The number of hydroxide ions.
B)The number of hydronium ions.
C)The extent to which the acid or base ionizes.
Answer:
i think it's c
Explanation:
A basketball inflated to a pressure of 2.25 atm is increased in temperature from 275 K to 317 K.What will be the new pressure, in torr, if the volume remains constant?
Answer:
[tex]P_2=1971.2torr[/tex]
Explanation:
Hello there!
In this case, by recalling the Gay-Lussac's gas law, as a directly proportional relationship between pressure and temperature, we can write:
[tex]\frac{P_2}{T_2} =\frac{P_1}{T_1}[/tex]
Thus, by solving for the required final pressure, in atmospheres first, we solve for P2 as follows:
[tex]P_2 =\frac{P_1T_2}{T_1}\\\\P_2=\frac{2.25atm*317K}{275K}\\\\P_2=2.59atm[/tex]
Which in Torricelli is:
[tex]P_2=2.59atm *\frac{760torr}{1atm}\\\\P_2=1971.2torr[/tex]
Best regards!
a geologist finds fossils in rocks that are older than the fossils and rocks of each layer beneath them what causes this situation
a. uplift
b.overturning of sedimentary rocks
c.intrusion of igneous rocks
d.seafloor spreading
e.subduction
4.What system is the system that takes in oxygen and releases carbon dioxide.
skeletal
muscular
circulatory
respiratory
Which of the answers does not represent a common type of air pollution? A) agricultural ammonia B) carbon monoxide exhaust C) sulfur oxide D) synthetic organic compounds E) industrial nitrogen oxide
Answer:
D)
synthetic organic compounds
Explanation:
synthetic organic compounds are water pollutants
Which sediments are carried by suspension?
Answer:
Sand and silt can be carried in suspension.
Explanation:
For example, sand and silt can be carried in suspension in river water and on reaching the sea bed deposited by sedimentation; if buried, they may eventually become sandstone and siltstone (sedimentary rocks) through lithification.
PLEASE Answer! Using the periodic table, predict the order of decreasing electronegativity for the elements Al, Ag, Ca, Se, and I.
AL is aluminum, last, that stuff blows up in microwaves 5
Ag is silver, 3
Ca is calsium 2
Se is a metaloid, Selenium, 4
I is Iodine- first 1
If you want to change the type of element your atom is, you can either
(2 RIGHT CHOICES)
add a proton
add a neutron
add an electron
Answer:
Add a proton and add a neutron
Mass = 200 g Volume = 20 cm3 What is the density?
Answer: 156
Explanation:
In at least 4 complete sentences, describe the similarities and differences between Avogadro's Law and Charles' Law.
answer
Avogadro's law states that, at constant temperature and pressure, the volume of a gas is directly proportional to the number of moles present. In other words, equal volumes of gases at the same pressure and temperature contain the same number of molecules - this is true regardless of their physical properties or chemical nature.
This number of molecules is
6.022
⋅
10
23
and is known as Avogadro's number,
N
A
.
Matematically, Avogadro's law can be written like this
V
n
=
c
o
n
s
t
, or, better yet,
V
1
n
1
=
V
2
n
2
.
Avogadro's law, as well as Boyle's law and Charles' law, are special cases of the ideal gas law,
P
V
=
n
R
T
. If temperature and pressure are kept constant, and knowing that
R
is of course constant, then
P
V
=
n
R
T
→
P
V
n
=
R
T
→
V
n
=
R
T
P
=
c
o
n
s
t
, which represents Avogadro's law.
The ideal gas law can also be written to incorporate
N
A
, since the number of moles are actually the number of molecules divided by Avogadro's number
P
V
=
N
N
A
⋅
R
T
, where
N
represents the number of molecules.
If the statement is true, write true. If the statement is false, change the underlined word or words to make the statement true.
3. ________________ If you increase the force on an object, its acceleration increases.
4. ________________ If you increase the mass of an object, its acceleration decreases.
5. ________________ To accelerate a 3 kg skateboard at 9 m/s 2 , a force of 3 newtons is needed.
6. ________________ The amount of inertia an object has depends on its speed.
Answer:
3 - True
4 - True
5 - False
6 - False
please join me for dinner tonight.(write the sentence kind).give the right answer for this question
Answer:
Sentence type wish
The answer to the question: No.
Answer:
Will you join me for dinner tonight?
Explanation:
like and rate and brainiest plz
Student Force
40 N
Student Force
80N
What is the net force in newtons (N)?
What is the direction of the motion? no motion
2
Answer:
net force is 80n ‐40n=40newton
the direction of motion is right
Number 8
in metals, reactivity increases ____ across a period, and in non metals reactivity increases ____ across a period.
A. to the left,to the left
B. to the left, to the right
C. to the right , to the left
D. to the right, to the right