Answer:
199.985 or 200 g NaOH
Explanation:
Not sure if you want an explanation or not but take the 5 mol/ 1 mol NaOH and multiply by molar mass of NaOH which is 39.997/40.
i gave brainlest.... the answer is correct!!!
1.Oort Cloud
2.Uranus Earth and Mars
3.Kuiper Belt
4.Asteroid Belt
What does a secondary consumer eat? Immersive Reader
Answer:
primary consumers and sometimes plants
Help plzzz I’ll give brainliest
Answer:
last one
Explanation:
Answer:
full moon
hope this helps
Hydrogen gas reacts with oxygen gas to produce water. How many moles of
hydrogen do you need to get 120 grams
of water?
Answer:Two
Explanation:
Iron+calcium oxide=?
Answer:
Calcium iron oxide (CaFe2O4)
PubChem CID 6336546
Molecular Formula CaFe2H8O4
Synonyms Calcium iron oxide (CaFe2O4) 12013-33-1 Calcium ferrite EINECS 234-584-5
Molecular Weight 223.83 g/mol
Component Compounds CID 23925 (Fe) CID 5460341 (Calcium) CID 962 (Water)
4. Calculate the number of carbon (C) atoms present in the 25 mL of sugar.
Show all your workings
*
Answer: [tex]8.38\times 10^{23}atoms[/tex] of carbon
Explanation:
According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number [tex]6.023\times 10^{23}[/tex] of particles.
mass of sugar= [tex]density\times volume=1.59g/ml\times 25ml=39.75g[/tex]
To calculate the moles, we use the equation:
[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}=\frac{39.75g}{342.3g/mol}=0.116moles[/tex]
1 mole of sugar [tex]C_{12}H_{22}O_{11})[/tex] contains = [tex]12\times 6.023\times 10^{23}=72.28\times 10^{23}atoms[/tex] of carbon
0.116 mole of sugar [tex]C_{12}H_{22}O_{11})[/tex] contains = [tex]\frac{72.28\times 10^{23}}{1}\times 0.116=8.38\times 10^{23}atoms[/tex] of carbon
Explain how the transfer of heat causes air to rise?
plzzzzzz help mee
also friction is not the answer
Answer:
Air in the atmosphere acts as a fluid. The sun's radiation strikes the ground, thus warming the rocks. As the rock's temperature rises due to conduction, heat energy is released into the atmosphere, forming a bubble of air which is warmer than the surrounding air. This bubble of air rises into the atmosphere.
Explanation:
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Example #1: 0.450 mole of Fe contains how many atoms?
Answer:
Number of Fe atoms = 2.709 × 10^23 atoms.
Explanation:
Given the following data;
Number of Fe moles = 0.450 mole
We know that Avogadro constant is equal to 6.02 * 10^23 mol¯¹
Number of Fe atoms = number of Fe moles * Avogadro constant
Substituting into the equation, we have;
Number of Fe atoms = 0.450 × 6.02 * 10^23
Number of Fe atoms = 2.71 × 10^23 atoms.
Note: Fe is the symbol for the chemical element Iron.
Wich of these BEST shows a change from potential to kinetic energy?
Choices
A: A sandwich at lunch helps a students run a race.
B: Electricity making a bulb light up.
C: Transfer of heat trough electromagnetic waves.
D: A ball sitting at the top of the hill.
what is the sum of 16+ -20?
answer:
-4
hope this helps
Energy used for metabolism comes primarily from which biomolecules a) Polysaccharides only b) Lipid only c) Lipid and Carbohydrates D) amino acids
Answer:
C) Lipids and Carbohydrates
Explanation:
Lipids, or fats, are stored long-term for energy when an organism cannot find carbohydrates (specifically glucose), which are used as short-term energy.
Which of the following is a nonelectrolyte?
HCI
Rb2SO4
CH3CH2OH
KOH
NaCl
Please help me with this homework
Answer:
dude
Explanation:
dude use a calculator, \ USE A CALCULATOR
What is the concentration in molL-1 of 20 mL of Na2CO3 solution that neutralises 15 mL of 1 M HCl solution?
Answer:
[tex]0.75\ \text{M}[/tex]
Explanation:
[tex]C_1[/tex] = Concentration of [tex]Na_2CO_3[/tex]
[tex]C_2[/tex] = Concentration of [tex]HCl[/tex] = 1 M
[tex]V_1[/tex] = Volume of [tex]Na_2CO_3[/tex] = 20 mL
[tex]V_2[/tex] = Volume of [tex]HCl[/tex] = 15 mL
We have the relation
[tex]V_1C_1=V_2C_2\\\Rightarrow C_1=\dfrac{V_2C_2}{V_1}\\\Rightarrow C_1=\dfrac{15\times 1}{20}\\\Rightarrow C_1=0.75\ \text{M}[/tex]
The concentration of [tex]Na_2CO_3[/tex] is [tex]0.75\ \text{M}[/tex].
Call this number 972-436-3577
Answer:
Dominos prank call hahahaha
Answer:
why
Explanation:
4. What causes a partial lunar eclipse?
Answer:
A partial lunar eclipse occurs when only a portion of the Moon enters Earth's umbra, while a total lunar eclipse occurs when the entire Moon enters the planet's umbra.
13.Which shows the order of increasing ionization energy?
a.Si, Al, Mg, Na
b.Ga, Ge, As, Se
c.Be, Mg, Ca, Sr
d.F, Cl, Br, I
The diagram below illustrates changes over time in a population of foxes in the wild,
X
What process is illustrated in the diagram?
extinction
overproduction
O natural selection
O artificial selection
Answer:
natural selection
Explanation:
is CdCi2 covalent or ionic
Answer:
binary and 11
Explanation:
CaCl2 or Calcium Chloride is an ionic bond and not a covalent bond. Since there should be sharing of electrons between two atoms to be a covalent bonding. In case of calcium chloride, the calcium gives up an electron to each chlorine atom, becoming Ca2+ ions and chlorine become Cl– ions.
:)
Place the
elements in order from low number of valence electrons to high number of valence electrons.
1
Neon
2
Aluminum
3
Silicon
4.
Potassium
5
Magnesium
What is a stock solution?
Select one:
ca. A concentrated solution that is used to make a more concentrated solution.
b. A concentrated solution that is used to make diluted solutions.
c. A solution that has been diluted to a concentration of exactly 1 M.
ND d. A solution that has been diluted to a concentration of less than 1 M.
why is productivity greatest near the ocean's surface?
Answer:
Sunlight penetrates the top layers of the ocean, so photosynthesis occurs there. ... Upwelling brings nutrients to the surface.
Which of the following organisms is reproduced by regeneration?
A.birds
B.squid
C.sponge
D.starfish
The following chemical reaction takes place in aqueous solution:
Mg(NO3)2(aq)+2 NaOH(aq) --Mg (OH)2(3)+2 NaNO3(aq)
Write the net ionic equation for this reaction.
Answer:
[tex]Mg^{2+}+2OH^{-}=>Mg(OH)2[/tex]
Explanation:
Plants can provide the materials that animals use in cellular respiration, and animals can provide some of the materials that plants use for photosynthesis. The image below shows the relationship between photosynthesis and cellular respiration. According to the diagram, how does cellular respiration aid the process of photosynthesis?
It produces ATP.
It produces glucose.
It produces mitochondria.
It produces carbon dioxide
Answer:
it produce atp
Explanation:
.............
Cellular respiration is a metabolic process that occurs in the cells of an organism. Carbon dioxide from cellular respiration aids the process of photosynthesis.
What are cellular respiration and photosynthesis?Cellular respiration is a process that takes place in the organism's cell where the cellular oxygen or chemical energy gets utilized and converted to ATP and waste like carbon dioxide.
The carbon dioxide released by the organism in the atmosphere is used by plants in the process of photosynthesis. Photosynthesis is a process that utilizes carbon and water to form glucose and oxygen.
Therefore, cellular respiration supports the process of photosynthesis by option D. producing carbon dioxide.
Learn more about cellular respiration and photosynthesis here:
https://brainly.com/question/18812151
Leila made herself a cup of hot chololate weighing 150 grams. If she started with 125 grams of milk, how many grams of hot chocolate mix did she add?
Answer:
150g-125g
=25 of hot chocolate mix
What is the practical application of melting point in the study of matter?
Answer:
Melting points are often used to characterize organic and inorganic crystalline compounds and to ascertain their purity. Pure substances melt at a sharp, highly-defined temperature (very small temperature range of 0.5 – 1 °C) whereas impure, contaminated substances generally exhibit a large melting interval.
Explanation:
I hoped this helps a bit! ^^
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3. Describe what happens to chemical bonds as a chemical reaction is taking place.
4. Give 3 examples on a daily basis of chemical reactions.
5. What is the difference between a chemical formula and a chemical equation?
Answer:
1. In a chemical reaction, the atoms and molecules that interact with each other are called reactants. ... No new atoms are created, and no atoms are destroyed. In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.
2. Given below are some of the examples of the chemical reactions in our daily life:
Photosynthesis.
Combustion.
Aerobic cellular respiration.
Anaerobic respiration including the process fermentation.
Metathesis reactions, for example, vinegar and baking soda.
Oxidation which includes rusting.
Digestion.
3. A chemical formula is the combination of atomic symbols that designate a particular chemical compound, or a substance with two or more different elements. ... A chemical equation shows one or more chemical compounds (reactants) being converted into different chemical species called products.
What is the relationship between molecular motion and energy?
Answer:
Because the particles are in motion, they will have kinetic energy. The particles will not all have the same energy, and the energy of the particles is constantly changing as they undergo changes in speed. Thus, for a given sample of matter, we can only talk about the average kinetic energy of the particles.
Explanation:
I hope this helps and pls mark me brainliest :)
We do know that if we "give" energy to a given object, the temperature of the object increases.
So there is a direct relationship between temperature and energy.
From this idea, we can conclude that:
"As we increase the energy, we also will see an increase in molecular motion."
We also do know that, as the temperature of an object increases, also does the kinetic energy of the particles that conform to the object (as the kinetic energy increases, the particles move more, this is why as we increase the temperature we usually see an increase in the volume of the object).
This increase in kinetic energy is related to the molecular motion (the movement of the electrons and nucleus o a molecule) as the kinetic energy of these parts increase, these move more.
So the relationship between molecular motion and energy is:
As we increase the energy, we also will see an increase in molecular motion.
If you want to learn more, you can read:
https://brainly.com/question/12280673
PLEASE HELP TEST
does anyone know the answer???? density question
Answer:
The answer is honey.
Explanation:
Answer: alcohol
Explanation: