Answer:
Number 2:
Element and compound
help me i will chose brainiest
Answer:
Atomic # is 9
protons 9
neutrons: 10
electrons: 9
mass :18.n u
energy shells: 18
You pour some juice from a short, wide glass into a tall, narrow glass. What happens to the volume of the juice? Explain your reasoning.
Answer: the volume increases
Explanation: It increasses because the volume is how tall it is
Is neon transparent translucent or opaque
Neon is transparent opaque as it is light, colorless and order less inert noble gas.
What are noble gas?Noble gas are defined as the element that belong to group 18 of the modern periodic table.
It is also known as inert gas or aerogene.
Noble gas are light, transparent, colorless and order less gases.
They are the group of six inert or non reactive gases.
Noble gases are odorless, colorless, nonflammable gases with negligible chemical reactivity.
Noble gases are exceedingly stable and unlikely to form chemical bonds due to their complete valence electron shells, which have no tendency to add or lose electrons.
Noble gas were originally classified as group 0 in the periodic table because it was thought they had a valence of zero, which means their atoms could not mix with those of other elements to form compounds.
Thus, Neon is transparent opaque as it is light, colorless and order less inert noble gas.
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The heat required to raise the temperature of 12g of water from 16 C to 21 C is:
3) The mass of a piece silver is 10.5 g. If a sample of pure silver has a volume of 13 cm3, what is the
density?
Answer:
The answer is 0.81 g/cm³Explanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\[/tex]
From the question
mass of metal = 10.5 g
volume = 13 cm³
We have
[tex]density = \frac{10.5}{13} \\ = 0.8076923...[/tex]
We have the final answer as
0.81 g/cm³Hope this helps you
Answer:
0.807
Explanation:
mass/volume = density
10.5/13 = 0.807
What is a Newton unit?
Answer:
Units of force.
Explanation:
Issac Newton created the laws of motion and discovered gravity.
5) The phase of matter where particles at extremely high temperatures become ionized
Answer:
plasma
Explanation:
Plasma, in physics, an electrically conducting medium in which there are roughly equal numbers of positively and negatively charged particles, produced when the atoms in a gas become ionized. It is sometimes referred to as the fourth state of matter, distinct from the solid, liquid, and gaseous states.
Can someone help me please.
Answer:
6 atoms since it says (6o2 and 6co2) notice how there's a 6 before the o2 and co2 ? (oxygen and carbon dioxide ?)
How many grams of silver nitrate are required to produce 0.25 mol of silver sulfide
how to get rid of my sisterrrr
Answer:
You don't
Explanation:
Unless you ask your sister to
Ship her away (DO NOT ACTULLY DO THAT)
simply just ask her to leave you alone
calculate the volume of 0.200 m cacl2 needed to produce 2.00 g of caco. there is excess of na2co3
Answer:
x100.
Explanation:
Na2CO3 (aq) + CaCl2(aq) → CaCO3 (s) + 2 NaCl (aq)
For example, if we use 2.00 g CaCl2 x 1 mole = 0.0180 mole CaCl2
111 g CaCl2
and mix it with 2.00 g Na2CO3 x 1 mole = 0.0189 mole Na2CO3
106 g.
AB + CD → CB + AD, where A and C are cations and B and
D are anions
Answer:
x100 this is the answer I didn't do explanation sorry for that
The amount of matter inside an object is called what?
Why is there so much heat released following a combination reaction
Answer: When a combination reaction occurs between a metal and a non-metal the product is an ionic solid.
Explanation: Another hint(s): When magnesium burns in air, the atoms of the metal combine with the gas oxygen to produce magnesium oxide. This specific combination reaction produces the bright flame generated by flares.
Find any errors in the orbital notation diagrams below and correct them.
Answer:
See explanation.
Explanation:
A. 2s is incorrect, the right arrow should be pointing downwards.
B. In 2p, the last box has 3 arrows. This is invalid. Each box can only store 2 arrows(electrons). The last arrow should be moved to a 3p orbital (new box).
C. In this one, the arrows switched directions (left is down and right is up). You could fix each box or just the last one (in 3p) to point downwards.
According to kineric molecular theory which statement descrives the particles in a sample of an ideal gas
Answer:
According to the kinetic molecular theory, which statement describes the particles in a sample of an ideal gas? The motion of the gas particles is random and in a straight-line.
Explanation:
what are 3 examples of pairs of atoms with polar covalent bonds?
Answer:
Water - H2O
Ammonia - NH3
Sulfur dioxide - SO2
Hydrogen sulfide - H2S
Ethanol - C2H6O
Explanation:
Those are some atoms with polar covalent bonds. Hope this helps!!
What is the main type of energy in an iphone charging cable?
Answer:
replace its predecessor, the 30-pin dock connector, the Lightning connector is used to connect Apple mobile devices like iPhones, iPads, and iPods to host computers, external monitors, cameras, USB battery chargers, and other peripherals.
I need the Formulas for:
* Density: (I think it's - D = M/V?)
* Mass: ?
* Volume?
(CHEMISTRY FORMULAS ONLY!!)
Explanation:
mass = desity × volume
volume = mass/density...
i believe thats right...
btw u means Physics formulae only..lol
PLEASE HELP ASAP ONLY HAVE 10 MINUTES. A certain photon of light has a wavelength of 422 x 10 -9 m. What is the frequency of the light? Show work
Answer:
7.11 x [tex]10^{14}[/tex] Hz
Explanation:
The equation for converting wavelength to frequency is ν=c/λ, or the speed of light over wavelength. The speed of light is 3.00 x [tex]10^{8}[/tex], and our wavelength here is 422 x [tex]10^{-9}[/tex]. All we have to do now is substitute our given values:
[tex]\frac{3.00x10^{8} }{422x10^{-9}}[/tex]
After reduction, our answer comes out to be about 7.11 x [tex]10^{14}[/tex] Hz.
How does increasing the mass affect the kinetic and potential energy of a pendulum?
Explanation:
Anytime matter is in motion it has kinetic energy. The faster an object moves, the more kinetic energy it has. The more mass an object has, the more kinetic energy it has.
Both the kinetic energy and potential energy are directly proportional to the mass of the object. Hence, increasing the mass will increase the kinetic and potential energy of the pendulum.
What is kinetic energy ?The kinetic energy of an object is generated by virtue of its motion. Whereas, the potential energy is generated by virtue of its position. hen the object is at rest, the energy is stored in it in the form of potential energy. When the object starts moving, its potential energy starts to converts to kinetic energy.
The kinetic energy of an object is related to its mass and velocity by the equation:
Ke = 1/2 mv²
Potential energy P = mgh
where, g is the acceleration due to gravity and h is the height of the object from the surface.
Hence, both potential energy and kinetic energy are directly proportional to the mass of the object. An increase in mass increase both form of energy of the object.
Therefore, the kinetic and potential energy of the pendulum increases with mass.
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Which is the electron configuration for nobelium (No)?
[Rn]7s25f14
[Rn]7s25f7
[Ne]3s23p7
[Xe]6s25d1
Answer:
[Rn]7s25f14
Explanation:
[tex][Rn]5f^{14}7s^2[/tex] is the electron configuration for nobelium (No).
Explanation:
The electronic configuration of an element is the distribution of its electrons in different energy levels around the atomic nucleus.It is written with help of an atomic number of an element.Given:
The element nobelium.
To find:
The electronic configuration of nobelium
Solution:
The atomic number of nobelium is 102.
The number of protons = Atomic number = 102
The number of electrons = Number of protons = 102
There are 102 electrons in atom nobelium and they will be filled according to the Aufbau rule that the electron will be filled in a subshell with lower orbital energy.
The electronic configuration of nobelium :
[tex][No]=1s^22s^22p^63s^23p^63d^{10}4s^24p^64d^{10}5s^25p^64f^{14}5d^{10}6s^26p^65f^{14}7s^2[/tex]
Or we can also write the above electronic configuration as:
[tex][No]=[Rn]5f^{14}7s^2[/tex]
[tex][Rn]5f^{14}7s^2[/tex] is the electron configuration for nobelium (No).
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Explain how the crystals of an igneous rock are used to help classify it. PLEASSSEEEE HELP ME
The crystals of igneous rock are formed due to different chemical composition, size and structure of the rocks
Formation of igneous rockThe crystals of an igneous rock are used to classify its own because the crystals of igneous rock are formed due to different chemical composition as well as size and structure. Igneous rocks are the type of rocks which are formed when magma cools and change into solid state.
They are classified on the basis of grain size, silica content, and silica saturation. The igneous rock is depend on the rate of cooling i.e. slow cooling causes the formation of large crystals whereas fast cooling produces small crystals. The igneous rocks are classified according to their chemical composition.
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Which best explains why water boils in a pot sitting over fire?
Heat energy is created from the thermal energy in the air.
Heat energy is transferred from the water to the fire.
Thermal energy from the fire moves to the water in the form of heat.
Thermal energy from the surrounding air moves to the water.
Answer:
C
Explanation:
Thermal energy from the fire move to the water in the form of heat.
Answer:
correct option C
Explanation:
You pour a spoonful of salt into a glass of water. Explain what happens to the mass of the salt and the mass of the water.
Answer:
If you pour a spoonful of salt into a glass of water, the sodium will react with the water and increase the mass.
Explanation:
Density is a physical property of a molecule that’s measured as mass per unit volume. (a) Given that density is usually expressed in the units of g/cm^3, calculate the density of a cube of plastic that has a mass of 2.331 g and an edge length of 1.500 cm (volume of a cube is V = l^3). (Show work pls + WILL MARK BRAINLIEST)
Answer:
0.690666... g/cm^3
Explanation:
density=mass/volume. mass is 2.331 g and using the length we can determine that the volume of the cube is 3.375 cm^3. 2.331/3.375= 0.6906666....
how many pounds are in 14.8 grams
Answer:
0.03262841
I tried, hope this helps :)
Answer:
0.032 lbs
Explanation:
Divide the mass value by 454.
Which system works with the reproductive system? (Hint, its not C)
A. Endocrine system
B. Excretory system
C. Respiratory system
D. Skeletal system
Answer:
A
Explanation:
Option B, Excretory System
A divergent plate boundary is defined as two plates moving toward each other
True or false
Answer:
FALSE
Explanation:
Fill in the blank with either "up" or "down"
a. If the pressure of a gas increases, the temperature will go up
b. If the volume of a gas increases, the pressure will go up
c. If the volume of a gas increases, the temperature will go up
d. If you increase the amount of gas, the pressure will go down
Answer:
a. up
b. down
c. up
d. up
Explanation:
What is the relationship between the temperature and the rate of the reaction?
negative
neutral
positive
i think it would be neutral