Answer:
Divide 837.4 g by 18.015 g/mol to get moles of H2O
Multiply moles of H2O by 6.022 x 10^23 molecules/mol to get molecules (of H2O in 837.4 g)
Round off your final answer to 4 sig figs.
Thank you and please rate me as brainliest as it will help me to level up
A cylinder shaped water tank has a height of 212 ft (6461.76 cm), and is able
to hold 15,000 gallons of water (15,000,000 mL or 15,000,000 cm3). The
volume of a cylinder is expressed by the equation
V = tr^2h
Where V is the volume, r is the radius, and h is the height of the cylinder.
Express the radius (r) in terms of volume (V) and height (h), then determine
the radius of a cylinder water tank (in centimeters) that is filled to capacity.
Answer:
27.19 cm.
Explanation:
From the question given above, the following data were obtained:
Height (h) of cylinder = 6461.76 cm
Volume (V) of cylinder = 15000000 cm³
P1 (π) = 3.14
Radius (r) =.?
Thus, we can obtain the radius of the cylinder water tank by using the following formula as illustrated below:
V = πr²h
15000000 = 3.14 × r² × 6461.76
15000000 = 3.14 × 6461.76 × r²
Divide both side by 3.14 × 6461.76
r² = 15000000 / (3.14 × 6461.76)
Take the square root of both side
r = √[15000000 / (3.14 × 6461.76)]
r = 27.19 cm
Thus, the radius of the cylinder water tank is 27.19 cm.
Which one is NOT part of the brain?
O cerebral cortex
Frontal Lobe
cerebral palsy
hippocampus
Answer:
The awnser is cerebral palsy
Explanation:
that is a medical condition caused when there is not enough oxygen to the brain at birth
BRAINLIEST PLEASE
5. The mass of cobalt-60 in a sample is found to have decreased from 0.800g to 0.200g in a
period of 10.5 years. From this information, calculate the half-life of cobalt-60.
Answer:
5.25yr
Explanation:
I think so
I need this answer ASAP! In order for conduction to transfer heat from one object to another, what must be true?
Answer:
The objects should be far apart. There must be air circulation. The objects need to be touching. Solar energy is required.
Explanation:
solids are most likely amorphous solids
Answer:
what? what do you mean?
how many atoms of oxygen are in a molecule of glucose?
Answer:
6 oxygen atoms
Explanation:
For example – glucose (C6H12O6), a common sugar molecule, is made up of 6 carbon atoms, 12 hydrogen atoms, and 6 oxygen atoms.
What type of substance is gravel
Answer:
When substances do not mix thoroughly and evenly (like sand and gravel), the mixture is said to be heterogeneous. A heterogeneous mixture consists of visibly different substances. Another example of a mixture is salt dissolved in water.
Hope it helps!
Confirmatory test of oxygen meaning?
Answer:
Oxygen supports combustion so a good method of testing for oxygen is to take a glowing splint and place it in a sample of gas, if it re-ignites the gas is oxygen. This is a simple but effective test for oxygen.
Explanation:
Normal red blood cells slide easily through narrow blood vessels. In sickle cell disease, many red blood cells change to a crescent shape like a slender moon. Crescent-shaped blood cells cause blockages in blood vessels. These blockages decrease the transport of oxygen. People with sickle cell disease often have sharp pains due to the lack of oxygen in parts of the body.
The sickle cell version of the gene that causes sickle cell disease is recessive. Suppose that two parents with no symptoms have a child with sickle cell disease. What genes did the child inherit from the parents?
A. The child must have inherited the sickle cell gene from the mother and the normal gene from the father.
B. The child must have inherited the normal gene from the mother and the sickle cell gene from the father.
C. The child must have inherited sickle cell genes from both parents.
D. The child must have inherited normal genes from both parents.
Answer:
C. The child must have inherited sickle cell genes from both parents.
Explanation:
Because of the fact that sickle cell disease is recessive, the child would have to get the gene from both parents.
Answer:
The child must have inherited sickle cell genes from both parents.
If a solid, a liquid, and a gas of a substance are each in separate covered jars, then the amount of kinetic energy of the particles of the substances decreases from solid to liquid to gas.
True
False
Answer:
false
Explanation:
i had the same thing to do
5. Name the compound which contain Strontium, Fluorine, and Oxygen. options: Strontium fluorate Strontium fluoride Strontium chlorate Strontium fluorine plz guys help me urgent
Answer:
This question appear incomplete
Explanation:
This question appear incomplete or has some wrong contents in it. Strontium, fluorine and oxygen do not exist in the same compound. This can even be better confirmed by the options provided. The options provided just two compounds that are rightly named
Strontium fluoride - SrF₂
Strontium Chlorate - SrCl₂
The options strontium fluorate and strontium fluorine are wrong names of the option strontium fluoride. Thus, if the question was asking of a compound that has just strontium and fluorine, the answer would have been strontium fluoride (SrF₂)
Pls help i will give crown
Answer: decay
Explanation:
Al(s) + HCl(aq)→AlCl3(aq) + H2(g) Identify the reactants for this reaction
Answer:
Al and Hcl
Explanation:
Reactants are the elements, compounds etc before the arrow
Why are enzymes required for living things to function? Reactions take place too slowly at body temperature and must be speeded up. Reactions take place too quickly at body temperature and must be slowed down. Reactions in the body require enzymes to act as reactants. Reactions in the body produce enzymes as byproducts.
Answer:
Reactions take place too slowly at body temperature and must be speeded up.
Explanation:
Reactions take place too slowly at body temperature and must be speeded up.
An enzyme is a substance that acts as a catalyst in living organisms, regulating the rate at which chemical reactions proceed without itself being altered in the process. Enzymes are required for living things to function because they speed up chemical reactions. Enzymes are protein catalysts.
Reactions take place too slowly at body temperature and must be speeded up.
For more information:
https://brainly.com/question/21248499?referrer=searchResults
Convert 1.580 hectoliters to deciliters.
liters
Answer:
1580 decilliters
Explanation:
Answer:
Convert 1.580 hectoliters to deciliters.
1,580
liters
Explanation:
I took the test;)
At STP there is 112L of HCl gas in a container. Read the stem and answer Q. No. 1 & 2.
1. What is the amount of gas in the container?
You have four fixed-volume containers at STP. Container A has 0.5 mol of gas in 11.2L. Container B has 2 mol of gas in 22.4 L. Container C has 1 mol of gas in 22.4L. Container D has 2 Mol gas of gas in 11.2 L. Which of the four containers have equal pressures
A and C
When cells or organisms maintain a stable internal state in a changing environment is called?
Answer:
Homeostasis
Explanation:
promise I will mark u brainiest help me
Answer:
B. 16, 18, 18
Explanation:
Particle;
³⁴₁₆S²⁻
The number of particles we seek is the protons, neutrons and electrons.
³⁴₁₆S²⁻ is an ion that has gained two electrons from its stable state.
34 is the mass number = number of protons + neutrons
16 is the atomic number = number of protons
Number of protons = 16;
Number of neutrons = mass number - atomic number
= 34 - 16
= 18
Number of electrons; In a neutral atom, the number of protons and electrons are the same.
This atom has gained two more electrons
16 + 2 = 18
Answer;
16, 18 , 18
Why do humans feel so attached in relationships? What is the reason?
Answer:
We attach when we are convinced that we are incapable of healing ourselves or giving ourselves what we really want and need.
Explanation:
Hope you get right
Which factor most directly affects potential energy but not kinetic energy?
Answer: The 'mass of the object' directly affects kinetic energy
Explanation:
The ovaries in human females and the testes in human males are glands that produce hormones as part of the endocrine system. What function is the endocrine system primarily supporting through these glands and hormones?
A.
breathing
B.
obtaining food
C.
reproduction
D.
removing waste
Answer:
reproduction
Explanation:
its on study island
If you had to explain to a friend how to balance a chemical equation, what would you say to them?
I attached an image of the game for reference.
just bring the numbers up and down so there are the same numbers of each element on each side.
on this one i would bring the O2 on the left to 1, bring the right side to 2 so there are 2 oxygens on each side, and because the right side now has 4 hydrogens when you brought up the oxygen, bring the number in front of H2 on the left to 2.
the answer should be 2,1,2
The balanced chemical equation should obey the law of conservation of mass that the number of atoms of each element on both sides should be equal.
2H₂ + O₂ → 2H₂O
What is the balanced chemical equation?The chemical equation of reaction in which the number of atoms of each element is equal on either side of the arrow is known as a balanced chemical equation.
A chemical equation is the expression of a chemical reaction in terms of symbols and coefficients of the substances. A chemical equation contains reactants participating and products forming in the chemical reaction.
The given chemical equation of the formation of water from hydrogen gas and oxygen gas is:
H₂ + O₂ → H₂O
To balance the above equation multiply the hydrogen gas on the reactant side by 2 and multiply the water by 2 on the product side.
2H₂ + O₂ → 2H₂O
Learn more about the balanced chemical equation, here:
brainly.com/question/15052184
#SPJ2
Which correctly lists three characteristics that are used to describe air?
Answer: density, Omass, radiation, pressure because Radiation pressure is the mechanical pressure exerted upon any surface . Small bodies are more affected than large ones because of their lower mass relative to their surface area formed by the radiation pressure of the young stars reduces the cluster mass enough to allow rapid dispersal.
Explanation: I Hope that helped!!!
mass, pressure, density
Which atoms has larger radius , Be or Ba? Explain your reasoning
A square box with F2 on the left F3 on the top F1 on the right and F4 on the bottom. If F1 is equal to F2 and F4 is greater than F3 which statement is correct? An unbalanced force will move the box up. An unbalanced force will move the box down. Several balanced forces will keep the box stationary. Several balanced forces will keep the box moving towards the right.
Answer:
B
Explanation:
Which of the following is a non-contact force?
A. Magnetic force
B. Frictional force
C.Force applied by a boatman on the oars
D.Force applied by a table on a book placed on it
again I hate science
If you have 547.3 grams of Ni2O, how many molecules would be present?
Answer: 8.830418848725065
Explanation:
8.830418848725065
How is the movement of electrons between energy levels like climbing a ladder?
Which describes a cell after diffusion?
A. The concentration inside the cell is greater than outside
B. The concentration is the same inside and outside the cell
C. The concentration outside the cell is greater than inside
The concentration inside the cell is greater than outside describes a cell after diffusion. Therefore, the correct option is option A among all the given options.
What is diffusion?Diffusion is regarded a passive mode of cellular transport in biology since it does not require additional energy to occur. It is the primary mode of transport for vital chemicals (such as amino acids) between cells. It is necessary for the production of energy via respiration and photosynthesis.
Some chemicals, referred to as "simple diffusion," are not controlled by the cell's own proteins. membrane. It is found in substances with low molecular weight, such as water, gasses and fat-soluble compounds. The concentration inside the cell is greater than outside describes a cell after diffusion.
Therefore, the correct option is option A.
To know more about diffusion, here:
https://brainly.com/question/13513898
#SPJ2
promise I will mark u brainiest help me
The answer is C
Further explanationLewis structures have a central atom and a terminal atom
The central atom is an atom that is bound to 2 or more other atoms, while a terminal atom is bound to 1 other atom
In describing Lewis's structure the steps that can be taken are:
1. Count the number of valence electrons from atoms in a molecule
2. Give each bond with a pair of electrons
3. The remaining electrons are given to the terminal atom so that an octet is reached
4. The remaining electrons that still exist in the central atom
5. If the central atom is not yet octet, free electrons are drawn to the central atom to form double bonds
Nitrogen -N : valence electron : 5 , need 3 electron for stable⇒central atom
Chlorine-Cl : valence electron : 7, need 1 electron for stable⇒terminal atom
So that N will bind 3 Cl atoms to get stability (using electrons together with covalent bonds), so that there is 1 lone pair in N atoms and 3 lone pairs from each Cl atom (a total of 10 lone pairs of electrons)