Answer: Porous rock has gaps between rock particles that can fill with water. but i’m not 100% sure
Explanation:
Answer:
porous rock has gap between rock particles that can fill with water
PLZ HELP
Observe: To model how hydrogen and oxygen react to make water, type “H2+O2” into the Reactants box and “H2O” into the Products box.
As the equation is written, which element is not in balance? ________________________
Explain: __________
Answer:
Observe: To model how hydrogen and oxygen react to make water, type “H2+O2” into the Reactants box and “H2O” into the Products box.
As the equation is written, which element is not in balanced?
oxygen isn't balanced...
Explanation:
in reactants there is 2hydrogens and 2 oxygen
but in product there is balanced no if hydrogen bt there is only one no of oxygen
Someone pls help me I will make you brain
Answer:
D cooler temperatures
Explanation:
Make me b r a i n please
What is the mass of 7.4 x 10^15 atoms of nickel (Ni)?
Since we are starting from the number of atoms of Nickel, we need to know two sets of formulas:
mass = moles × molar mass
moles = atoms ÷ Avogadro's Number
⇒ mass = (atoms ÷ Avogadro's Number) × molar mass
mass = [(7.4 × 10¹⁵ atoms) ÷ (6.022 × 10²³ atoms/mole)] × (58.69 g/mol)
= 7.21 × 10⁻⁷ g
The mass of 7.4 x 10^15 atoms of nickel (Ni) is 7.21 × 10⁻⁷ g.Someone pls help me I will make you brain
Match them plsss
Answer:
carbon monoxide - B
nitrogen oxides - D
particulate matter - A
sulfur oxides - C
Explanation:
not sure if i'm fully correct though
Answer:
Carbon monoxide is (B)
Nitrogen oxides is (D)
particulate matter is (A)
sulfur oxides is (C)
Explanation:
sorry if I did it wrong
What are epimers?
How are glucose and manose epimers?
Please Help!
Answer:
Epimers are carbohydrates which vary in one position for the placement of the -OH groupExplanation:
they have a specific type of stereoisomers which have multiple stereo center's but differ from one another, they differ from each other by configuring at the c-2" atom . so, they are epimersThink of a time you might have used the scientific method without even realizing it.
Answer:
when i exist
Explanation:
the energy level model of the atom was proposed by
Answer:
Niels Bohr
Explanation:
an amount of nitrogen undergoes a physical change and increases its volume. What can be known about this physical change? The boiling point of the nitrogen increased. The mass of nitrogen increased. The color changed. The density changed.
Answer:
it was a chemical reaction
Explanation:
D
Explanation:
is the answer
Help pls What have you taken away from the work of Stephen Hawking?
When Stephen Hawking was diagnosed with ALS at age 21, he knew he had little time left. But he also knew he wanted to do so much more first. With these circumstances, he learned the importance of carpe diem .
PLEASE LHELP
How many oxygen atoms are in 6 Carbon dioxide compounds (6co2)
Number 5
PLEASEE HELP
Answer:
12
Explanation:
6 moles multiplied 2 atoms of O2
That gives 12 atoms
How do we get mass from moles?
if an atom has 8 protons, 8 neutrons, and 8 electrons and then loses a neutron, what is it?
Answer:
A Cation
Explanation:
How many moles of hydrogen gas would be required to produce 25 moles of H2O?
The balanced equation for the production of water from hydrogen gas is
2H₂ + O₂ → 2H₂O
Based on the balanced equation, for every mole of hydrogen, a mole of water is produced.
∴ Since the moles of water = 25 moles
then the moles of hydrogen gas = 25 moles25 moles of H₂ (hydrogen gas) are required to make 25 moles of H₂O.
What is Stoichiometry ?Stoichiometry is an important concept which helps us use the balanced chemical equation to measures the amount of reactants and products.
What is Balanced Chemical Equation ?The balanced chemical equation is the equation in which the number of atoms on the left hand side that is reactant side is equal to the number of atoms on the right hand side that is product side in an equation.
First we have to write the Balanced chemical equation
2H₂ + O₂ → 2H₂O
To produce 2 moles of water, 2 moles of hydrogen are required to produce 25 moles of water.
According to the Stoichiometry
[tex]\frac{2\ \text{moles of}\ H_2}{2\ \text{moles of}\ H_2O} \times 25\ \text{moles of}\ H_2O[/tex]
= 25 moles of hydrogen gas is required
Thus, from above conclusion we can say that 25 moles of H₂ (hydrogen gas) are required to make 25 moles of H₂O.
Learn more about the Stoichiometry here: brainly.com/question/14935523
#SPJ2
ch3cooh + naoh ?????????????
Answer:
CH3COOH+NAOH=.>CH3COONA+H20
Explanation:
PLEASE HELP! Which rock is an example of a chemical sedimentary rock?
coal
iron ore
shale
sandstone
Answer:
sandstone
Explanation:
Answer: iron ore
Explanation: The iron ore deposits are found in sedimentary rocks. They are formed by the chemical reaction of iron and oxygen mixed in the marine and fresh water.
A gas under constant pressure has a volume of 30.57 m and a
temperature of 59.0 K. A change in temperature caused the
volume to change to 21.14 m². Based on the relationship
between volume and temperature, what must have happened to
the temperature?
Considering the relationship between volume and temperature, a gas under constant pressure can only have its volume reduced as a result of a decrease in its temperature.
According to Charles law, at constant pressure, the volume of a gas is directly proportional to its absolute temperature. Thus:
V1/T1 = V2/T2 where V1 = intial volume, V2 = final volume, T1 = initial temperature, and T2 = final temperature.
In this case, T1 = 59.0, V1 = 30.57, and V2 = 21.14
T2 = 21.14 x 59/30.57
= 20.05 K
It can be seen that the temperature of the gas has reduced from 59.0 K to 20.05K.
More on gas laws can be found here: https://brainly.com/question/1190311
Cual es la convención de 746 Hm
Answer:
75.6
Explanation:
756x0.1=75.6
1 d =hm=0.1
why is polystyrene soluble in acetone and not water
Polystyrene and acetone are not soluble in water because they are non-polar substances.
A polar substance is a substance that has opposite charges on two ends of the molecule. In polar molecules, a dipole moment exists in the molecule and accounts for its interaction with water.
Water is a polar solvent. It can only dissolve polar molecules. Since polystyrene and acetone are both non-polar substances, polystyrene dissolves in acetone and not in water.
This agrees with the principle in chemistry that like dissolves like.
Learn more: https://brainly.com/question/24775418
A high pressure system generally indicates?
Question 9 options:
tornadoes
rain
fair weather
is lithium a good or bad element? (explain why)
Answer:
Its good
Explanation:
It has power
Answer: The widespread occurrence of lithium in plants results in a wide, although low-level, distribution of lithium in animals. Lithium salts have complex effects when absorbed into the body. They are not highly toxic, although high levels can be fatal.
Explanation: Which means that lithium is a good element depending on levels.
Potential energy is energy that is stored in an object. It isn't being used at the moment, but is waiting to do work. A good example is to think about a boulder sitting on top of a hill. Just sitting there, the boulder isn't doing anything. But because it is sitting on top of a hill, it has the potential to roll down and do some damage to a car or building below. The energy is stored in that rock because of its size (mass) and the distance it will travel once it starts rolling. Another good example is a rubberband. When you stretch a rubber band, it wants to move back to its original position, and thus you have given it potential energy. As the rubber band is released, potential energy is changed to motion.
Kinetic energy is energy of motion. A rubber band flying through the air has kinetic energy. When you are walking or running your body is exhibiting kinetic energy. This energy is performing work. Other examples of kinetic energy include: legs pump bicycle pedals, lightning snaps trees, cars travel down the street, football players making tackles, and 4-wheelers speeding through the woods.
Potential energy is converted into kinetic energy. As mentioned before, a stretched rubberband can change from having potential to kinetic energy. Another example of this change between kinetic and potential energy can be seen using a yo-yo. Before a yo-yo begins to fall from your hand it has stored energy due to its position. At the top (in your hand) it has its maximum potential energy. As it starts to fall the potential energy begins to be changed into kinetic energy. At the bottom its potential energy has been completely converted into kinetic energy so that it now has its maximum kinetic energy. Another example of the change between kinetic and potential energy is a waterfall. A waterfall has both potential and kinetic energy. The water at the top of a waterfall has stored potential energy. When the water begins to fall, its potential energy is changed into kinetic energy. This change in energy is used in Niagara Falls, Canada to provide electricity to parts of the northeastern United States.
Questions:
1. What is kinetic energy?
2. What is potential energy?
3. List 5 examples of Potential energy given in the above passage. The first two are filled in for you.
1. __A boulder sitting on top of a hill that could roll down.___________ 2. __A stretched rubberband.___________________________________ 3. ________________________________________________________ 4. ________________________________________________________ 5. ________________________________________________________
4. List 5 examples of Kinetic Energy given in the passage above. The first
two are filled in for you.
1. __Water falling down a waterfall.____________________________ 2. __Car moving through the streets.____________________________ 3. ________________________________________________________ 4. ________________________________________________________ 5. ________________________________________________________
Answer:
it's all in the passage
Explanation:
read over the passage and find the answer i promise they're in there.
7th grade Sem 1
13.2.6 Quiz: Chemistry of Life
Question 3 of 5
Which substance used during photosynthesis does a plant take in from the
soll?
A. Water
O
B. Sugars
C. Proteins
D. Oxygen
SUBMIT
Answer: Water
Explanation: During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil
Please help with chemistry!
Answer:
name is Ian symbol is spices mass number is 100
Explanation:
#
what does it mean to say that density is a characteristic property of a pure substance
Density is the degree of the heaviness of a particular substance.
Density can also be defined as the unit mass of a substance per the substance's volume.Density is said to be the characteristic property of a pure substance because the density of a pure substance is constant and fixed
Pure substances are substances that are homogenous in nature, which means they are uniform and are made up of only one component.Density is said to be the characteristic property of a pure substance because the density of a pure substance is constant and fixed but its mass and volume can vary.To learn more, visit the link below:
https://brainly.com/question/11208248
An octopus swims 7 km at a speed of 3 km/hr.How long does it take in hours and minutes?
Answer:
your question is not correct
Cumulus Clouds are _______ ______ clouds with __________ bases.
Answer:
Cumulus Clouds are __puffy _____ clouds with ___flat _______ bases.
Calculate the mass of a substance which has a volume of 35
cm3 and a density of 0.500 g/cm3. Make sure your answer
has correct significant figures.
The answer is 17.5kg.
To get the mass of an object you do Volume × Density. The SI unit of Mass is "kg."
Why is boiling water considered a physical change
Which of these is caused by bacteria? A) tuberculosis B) influenza C) the common cold D) chicken pox
Answer:
The answer is A Tuberculosis
Chemical Formula:
4Ca(OH)2
In the chemical formula above, how many different types of elements are present in a molecule of this formula?
Answer:
They are just two....Ca and OH