Answer:
Liquid
Explanation:
In what type of reaction or process does heat flow into the system?
Answer:
through thermal energy
What is the common size for beakers and flasks?
Answer:
the average size for a flask is 8 ounces.
Explanation:
i found this info on beaker:
Beaker Capacity Diameter Height
50 ml beaker 4 cm 5.5 cm
100 ml beaker 5 cm 7.2 cm
150 ml beaker 6 cm 8.5 cm
250 ml beaker 7 cm 9 cm
Which question cannot be answered through making measurements?
A. How much has the honeybee population declined in North
America?
B. How does a decline in honeybees affect the pollination of crops?
C. Should humans stop using chemicals that harm honeybees?
D. Which chemicals produced by humans cause harm to honeybees?
Answer: C. Should humans stop using chemicals that harm honeybees?
Explanation: Just took the test
The question cannot be answered through making measurements is
Should humans stop using chemicals that harm honeybees?So, option C is correct one.
How chemicals harms the honeybees?The pesticides most harmful for the honeybees.The bees are mostly exposed by residual found in nectar of plants and in water.Mainly, diazinon, imidan, malathion and sevin are the chemicals which is harmful for the honeybees.To learn more about chemicals,
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If you used a heat lamp instead of a flashlight, which penny would get the hottest?
how many atoms are there in Cu₂S?
Answer:
3
Explanation:
There are 2 copper atoms because there is a subscript of 2 that comes after it. There is one Sulfur atom.
Hope this helps and good luck with your assignment. (please mark me brainliest if possible).
Show a numerical setup for calculating the quantity of heat in joules required to completely vaporize 102.3 grams of H2O(l) at 100°C and 1.0 atm.
Answer:
The heat required to vaporize 102.3 grams of H₂O(l) is 231198 J.
Explanation:
The heat required to vaporize 102.3 g of H₂O(l) can be calculated as follows:
[tex] q = m*\Delta H_{v} [/tex]
Where:
q: is the heat
ΔHv: is the heat of vaporization of water = 2260 J/g
m: is the mass = 102.3
[tex]q = m*\Delta H_{v} = 102.3 g*2260 J/g = 231198 J[/tex]
Therefore, the heat required to vaporize 102.3 grams of H₂O(l) is 231198 J.
I hope it helps you!
The heat required to vaporize 102.3 grams of H₂O(l) is 231198 J.
The heat required to vaporize 102.3 g of H₂O(l) can be calculated as follows:
[tex]q=m\times H_v[/tex].....(1)
Here, q is the heat
[tex]H_{v}[/tex]: is the heat of vaporization of water = 2260 J/g
m: is the mass = 102.3 g
Substitute the value in equation (1) as follows:-
[tex]q=102.3\ g\times2260\ J/g\\\\=231198\ J[/tex]
Therefore, the heat required to vaporize 102.3 grams of H₂O(l) is 231198 J.
To know more about:-
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What is the compound P2S5 called?
Answer:
Phosphorus pentasulfide.
Explanation:
A student pushes against a wall with 30 Newton’s of force and the wall does not move
Answer:
you can't go through a solid unless you broke the atoms in the wall
which sentece is a scentific statement
10 pts
A pitcher throws a baseball with a velocity of 33 m/s. If the ball has a mass of 4 kg, how
much kinetic energy does the ball have?
Answer:
The answer is
2178 JExplanation:
The kinetic energy of an object given it's mass and velocity can be found by using the formula
[tex]KE = \frac{1}{2} m {v}^{2} \\ [/tex]
where
m is the mass
v is the velocity
From the question
m = 4 kg
v = 33 m/s
The kinetic energy is
[tex]KE = \frac{1}{2} \times 4 \times {33}^{2} \\ = 2 \times 1089 \\ = 2178 \: \: \: \: \: \: \: \: [/tex]
We have the final answer as
2178 JHope this helps you
Answer:
2,178J
Explanation:
The formula is [ KE = 1/2mv² ] where m = mass and v = velocity.
KE = 1/2(4)(33)²
KE = 1/2(4)(1089)
KE = 1/2(4356)
KE = 2178
Best of Luck!
Audio and radio signals can be carried over electric wires and they are examples of ________ current. A) alternating B) direct C) pulsating D) variable
Answer:
Direct current!
Explanation:
Process of elimination, it isn't A, it isn't C, and it definitely isn't D
Answer:
A.) Alternating
Explanation:
Usatestprep
Define fundamental quantities.
Answer:
In physics, there are seven fundamental physical quantities that are measured in base or physical fundamental units: length, mass, time, electric current temperature, amount of substance, and luminous intensity.
Explanation:
Element in the periodic table are arranged by
elements in the periodic table are arranged by the atomic number of the element
Answer:
The isotope carbon-14 has 6 protons and an atomic mass of 14. Carbon-14
Explanation:
I need sum help on this
Answer:
Protons and Neutrons
Explanation:
Neutrons and protons constitute almost all of an atom's mass. The third type of stable particle is the electron. Electrons have a negative charge but are extremely small and have a mass only 1/1850 that of a proton or neutron. They are so small that for practical purposes they do not contribute to the mass of the atom.
I hope this helped!
if i put a ice cube on a table what type of phase would occur
melting
freezing
condensation
evaporation
Answer:
melting
Explanation:
the ice would turn to water before it evaporated
What are examples of how science has influenced technology?
Explanation:
Science and technology help each other advance. Scientific knowledge is used to create new technologies. New technologies often allow scientists to explore nature in different ways and make new discoveries. Examples of technologies that have helped science advance include the telescope and microscope.
What is the term for a combination of two or more substances in any proportions in which the substances do not combine chemically to form a new substance.
A Mixture
B Compound
C Molecule
D Element
describe how electrical energy can be transformed into mechanical energy within a magnetic field.
Answer:
this is the answer to your question bro or sis
What type of bacteria convert the
ammonia and ammonium into nitrates
and nitrites
A. Photosynthetic bacteria
B. Nitrifying bacteria
C.Nitrogen-fixating bacteria
Hi. I need help with this
Thanks
List and explain the factors that determine ionization energy and atomic volume
Factors that determine ionization energy:
Electronic Repulsion - If the electronic density decreases, the ionization energy with increase and vice versa. If an electron gets released, it decreases the electronic repulsion. This makes releasing another electron harder than the first on unless the electron that is being released comes from another energetic level.# Of Energy Levels - The more energy cores that get filled up, the more ionization levels decrease. When we see the energy levels go from top to bottom, the ionization also go from most to least. This is why ionization occurs on the highest level.Nuclear Charge - The higher the atomic number, the higher charge in the nuclei. This also makes the ionization energy higher as it increases from left to right of in other words, if the nuclear charge gets higer, the energy gets higher as well.Factors that determine atomic volume:
How many protons are in the nucleus (nuclear charge)How many energy levels carry electrons (electrons in outer energy level)Best of Luck!
The value equal the sum of the protons and neutrons in the nucleus of an atom
The Atomic Number should be your answer, although I am not completely sure.
use dimensional analysis to slove; a small carton of milk contains 1 cup. if a cup equals 8 oz, how many cubic centimeters does it contain?
Answer:
236.59 cubic centimeters
Explanation:
Conversion factors:
1 cup = 8 oz
1 oz = 29.5735296 mL
1 mL = 1 cc (cubic cm)
(1 cup) x (8 oz / 1 cup) x (29.5735296 mL / 1 oz) x (1 cc / 1 mL) = 236.5882368 cc
A student is asked to model gas pressure using two walls and a ball connected to a string, as shown. The ball represents a gas particle. The student swings the ball so it hits the two walls
alternately, How should the student change the setup to show an increase in pressure caused by an increase in temperature?
Answer:
ummm i think move the two walls together
Explanation:
hope this helps
Wish of the following BEST describes an orbital?
a
According to the Bohr model of the atom, it is a three dimensional region of space where there is a 90% probability of finding a neutron at any given moment in time.
b
According to the Bohr model of the atom, it is a three dimensional region of space where electrons are constantly found.
c
According to the quantum mechanical model of the atom, it is a three dimensional region of space where protons are constantly found
d
According to the quantum mechanical model of the atom, it is a three dimensional region of space where there is a 90% probability of finding an electron at any given moment in time.
Answer:d
b/c the bohr atomic model say that the electron are present in the orbits where the modern physics suggests that according to hisenberg uncertainity principle u cannot locate an electron but can find its maximum probibility in a given region and that is named as orbital
The statement best describes an orbital is according to the quantum mechanical model of the atom, it is a three dimensional region of space where there is a 90% probability of finding an electron at any given moment in time. Therefore, option D is correct.
What the quantum mechanical model of the atom ?The quantum mechanical model of atoms describes the three-dimensional position of the electron in a probabilistic manner using a mathematical function known as a wave function, which is frequently denoted as. Orbitals are another name for atomic wavefunctions.
The quantum mechanical model determines the allowed energies of an electron and the likelihood of finding the electron in different locations around the nucleus.
Electrons in the same atom with the same principal quantum number (n) or principal energy level are said to occupy an electron shell of the atom in the quantum-mechanical model of an atom. Orbitals are regions of space where electrons are likely to be found.
Thus, option D is correct.
To learn more about the quantum mechanical model of the atom, follow the link;
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Mrs. Rushing fills a balloon with hydrogen gas to demonstrate its ability to burn. Which combination could she
use to produce the hydrogen she needs?
NaOH and oil
Zn and KOH
H2SO, and CaCO
0 Mg and HCI
I’ll mark your reply if the answer was correct.
Answer:
Its D
Explanation:
I took the Unit Test on Edge
Answer:
D. Mg and HCl
how many moles are in 23.4g?
__CH4+O2-->__CO2+__H2O
CH4 + 2O2 --> CO2 + 2H2O
On the reactant side you start with 1 carbon, 4 hydrogen, and 2 oxygen. On the product side you start with 1 carbon, 2 hydrogen, and 3 oxygen. In order to get them equal, you need to put 2 in front of the H2O which equals out the number of Hydrogen on both sides. But Now we must balance the Oxygens. Because of the H2O we now have 4 Oxygens on the product side and only 2 on the reactant. In order to balance this, we put a 2 in front of the O2 giving us 4 hydrogen on both sides, Balancing the equation
Which elements below have similar chemical properties? Nitrogen and Arsenic Sodium and Chlorine Fluorine and Aluminum Beryllium and Nickel
Answer:
A period 3 element is one of the chemical elements in the third row (or period) of the periodic ... The third period contains eight elements: sodium, magnesium, aluminium, ... This makes all eight elements analogs of the period 2 elements in the same ... Phosphorus (symbol P) is a multivalent nonmetal of the nitrogen group,
Explanation:
nfs if this is right but its worth a shot!
PLEASE HELP ASAP!
what are the products of radioactive decay?
Answer:
gamma Rays and neutrons.
Explanation:
not one hundred percent sure.
True
or False: A force has to touch an object in order to affect it.
Hellppp
