Answer:
Sublimation is the process from a solid directly into a gas. The particles of a solid absorb enough energy to completely overcome the force of attraction between them. Solid carbon dioxide changes directly to the gaseous state. Therefore the state from soiid and gas can be observed.
Explanation:
Hope this helps! <3
Which mineral is found in both limestone and marble?
Answer:
Calcite
Explanation:
it is am mineral made up mostly of calcium carbonate
Answer:
Calcite is the answer your looking for.
Explanation:
Brainliest?
Which is a laboratory Thermometer made of?
Mercury or Alcohol
Answer:
Mercury
Explanation:
The old school laboratory thermometers were made from the liquid metal Mercury. It is a toxic element and must be handled with care.
Nowadays, we use digital thermometers, which are safer and provide a more accurate reading.
How many conversion factors would be used to convert 20 hectoliters to milligrams?
24343
is your answer for the question
What does "naked" DNA mean
Answer:
it means plasmid dna
Explanation:
The naked DNA is a free DNA without surrounded by any protein or lipid layer. Also, The naked DNA is called plasmid DNA
i have advanced so i got this right
Answer: Naked DNA refers to DNA that is not associated with lipids, proteins, or any other molecule to help protect it. Naked DNA is the result of release of genetic material into the surrounding environment, such as from bursting cells. Incoming DNA is often incorporated into the bacterial genome after absorption.
Are water molecules always polar or always non polar?
Answer:
hi
Explanation:
Water is a polar molecule. While the overall charge of the molecule is neutral, the orientation of the two positively charged hydrogens (+1 each) at one end and the negatively charged oxygen (-2) at the other end give it two poles.
state the characteristics of transition metals
Answer:
Conductivity, Malleability, High Melting Point, Luster
Explanation:
Transition metals have the following properties:
Conductivity (Electrical and Thermal)
Malleability (You can hit it with a hammer to mold it)
High melting point
Luster (Shininess)
How does the overall charge of oxygen-16
compare to the overall charge of oxygen-17 and oxygen-18? Use the
models of isotopes to help explain your answer
Answer:
there's a difference in neutrons in the neutron count
Explanation:
look at the diagram
The overall charge in both the isotopes is the same that is 0.
Explanation:
Isotopes are the atoms of the same element with the same number of protons and electrons but with different numbers of neutrons.In the isotope oxygen-17:
There are 8 protonsThere are 9 neutronsThere 8 electronsOverall charge on the oxygen-17:[tex]=+8+(-8)=0[/tex]
In the isotope oxygen-18:
There are 8 protonsThere are 10 neutronsThere 8 electronsOverall charge on the oxygen-18:[tex]=+8+(-8)=0[/tex]
The only difference in the given two isotopes is of number of neutrons
So from this, we concluded that the overall charge in both the isotopes is the same that is 0.
Learn more about the isotopes here:
brainly.com/question/24604793?referrer=searchResults
brainly.com/question/9280592?referrer=searchResults
How do I calculate the density of benzene if 0.10L has a mass of 36.4g
please help i will mark brainlist
Answer:
The answer is 4
Explanation:
Carbon has four valence electrons and here a valence of four. Each hydrogen atom has one valence electron and is univalent
Answer:
there are 4 valence electrons, they are the ones on the outmost ring :)
Explanation:
sorry i typed it in the wrong place
At a constant temperature a tire has a pressure of 445 kPa and volume of 18.3 L. If the volume increases to 22.4 the new pressure of the tire will read ____kPa. Report your answer to the nearest whole number.
Answer:
P₂ = 364 KPa
Explanation:
Given data:
Initial pressure = 445 KPa
Initial volume = 18.3 L
Final volume = 22.4 L
Final pressure = ?
Solution:
The given problem will be solved through the Boly's law,
"The volume of given amount of gas is inversely proportional to its pressure by keeping the temperature and number of moles constant"
Mathematical expression:
P₁V₁ = P₂V₂
P₁ = Initial pressure
V₁ = initial volume
P₂ = final pressure
V₂ = final volume
Now we will put the values in formula,
P₁V₁ = P₂V₂
445 KPa × 18.3 L = P₂ × 22.4 L
P₂ = 8143.5 KPa.L/22.4 L
P₂ = 364 KPa
Given .20 mol C3H3, how many moles of CO2 will be produced? C3H8 +02 -> CO2
+ H2O
Explanation:
20 molecules of C3H8 react with _100_ molecules of O2 to produce _60_ molecules of CO2 and
_80_ molecules of H2O. Use stoichiometric ratios from the balanced equation.
Hope this helps!
HI!! I need help, who has more energy red lights or radio waves?
Answer:
Red Lights
Explanation:
Explain the difference between pure substances and mixtures.
Answer:
A pure substance consists only of one element or one compound, whereas a mixture consists of two or more different substances, not chemically joined together.
Three out of 7 students at the dance were boys if 140 students attended the dance how many were girls enter number of girls here ___
what is the chemical formula for molybdenum(vi) sulfide
Answer: Mo2S6
Explanation: Only transition metals have Roman numerals. Metals first then nonmetals
List the steps to write the shorthand electron configuration of argon.
Answer: 1s22s22p63s23p6.
Explanation:Therefore the Argon electron configuration will be 1s22s22p63s23p6. Because the third energy level has eight electrons and is therefore full (3s23p6) it is called a noble gas.
As new information is discovered, scientific theories are changed. Sometimes, old theories are revised. Why is this a necessary practice for science? Group of answer choices Old theories are dependent on primitive technology that was flawed, so new technology must be used. The process allows for an increasingly accurate understanding of the world It ensures that the newest ideas are the ones used to develop medicines and important safety equipment. New scientists need to get credit for their ideas or no one will go into science professions
Answer:
Old theories are dependent on primitive technology that was flawed, so new technology must be used.
Explanation:
The process of science is an unending process of inquiry into the nature of the universe. This inquiry into the nature of the universe is aimed at understanding of how things work and how the natural course of the universe can be exploited for man's good.
As new scientific evidences emerge, old theories are revised because we understand the world better, better technology is used to investigate nature in order to get a clearer view of natural phenomena.
Most old theories depend on obsolete technology, hence modern day sophisticated equipment must be used to correct the flaws of old theories.
(03.06 MC)
What is the strongest intermolecular force between an NaCl unit and an H2O molecule together in a solution? (4 points)
Group of answer choices
Covalent bonding
Dipole-dipole force
Hydrogen bonding
Ion-dipole force
Answer:
Hydrogen bonding
Explanation:
Its my answer
How is it possible that a substance like liquid nitrogen can boil when it is very cold?
help needed...
Answer:
Liquid nitrogen, on the other hand, boils at a much colder temperature. Liquid nitrogen boils at -320 degrees. That means that as soon as LN2 leaves our special holders and hits the air, it instantly vaporizes because the air around it is so cold.
Explanation:
How many Pb and Kr atoms are there in Pb9(Al5Kr7)4?
can anyone help mwe? i needs help :(
Pb = 9
Kr = 28
Further explanationProust stated the Comparative Law that compounds are formed from elements with the same Mass Comparison so that the compound has a fixed composition of elements
In the same compound, although from different sources and formed by different processes, it will still have the same composition/comparison
Compounds can be formed from several elements, which can be the same or not .
The composition of the constituent elements is usually expressed in subscript
For compound : Pb₉(Al₅Kr₇)₄
The number of Pb atoms = 9
The number of Kr atoms = 7 x 4 = 28
What is an energy sublevel?
A. The level of energy possessed by all electrons in one type of orbital
B. The energy required to gain electrons to form an octet
C. The energy contained within the nucleus of an atom
D. The amount of energy lost when 2 electrons are paired
Answer: A. The level of energy possessed by all electrons in one type of orbital. OR C. The energy contained within the nucleus of an atom.
Explanation: In chemistry, it would be A., but in physics, it would be C. It really depends on which subject in Science you’re doing. If you’re doing chemistry, choose A, if you’re doing physics, choose C.
An energy sublevel is A. The level of energy possessed by all electrons in one type of orbital.
What is an energy sublevel?An energy sublevel refers to the amount of energy that is possessed by all the electrons residing in an orbital. The energy sublevel can be ordered in the s, p, d, and f levels.
So, these are the orbitals described by the energy sublevel. The correct option number that describes the energy sublevel is then this; A. "The level of energy possessed by all electrons in one type of orbital."
Learn more about energy sublevels here:
https://brainly.com/question/9449510
#SPJ6
Is it possible to turn an ordinary substance into gold? In simple words
Answer:
Yes, gold can be created from other elements. But the process requires nuclear reactions, and is so expensive that you currently cannot make money by selling the gold that you create from other elements. ...
Explanation:
Practice
What is the best definition of science? Choose the best answer.
Only learning through experimentation
Learning how the world works using evidence
8
Only looking at the world
A
9
Knowledge does not change - this knowledge has
been and is the same always
10
Aut
11
12
SUBMIT
13 P
Answer:
learning trough experimentation i think
Select all that apply.
Which valences have the greatest tendency to form ions?
+1
+2
+3
-4
+4
-2
-3
-1
Answer:
+1,-1,+2,-2,+3,-3
Explanation:
All of the statements below correctly describe eukaryotic cells. Some of the statements
also correctly describe prokaryotic cells. Which statement correctly defines a eukaryotic
cell, but not a prokaryotic cell?
Performs metabolic processes with the help of chemicals.
The flow of nutrients and wastes occurs across a membrane.
O Utilizes a nucleus to contain its DNA.
O Contains DNA as genetic material.
Hi! I am here to help so the answer is ,Utilizes a nucleus to contain its DNA!
Briefly explain in a few sentences the differences between how a sunflower gets energy and a squirrel gets energy. Include the words glucose, produces, and consumes in your answer.
Answer:
Explanation:
A sunflower, which is a plant, obtains its energy from the sunlight during a process called photosynthesis. This process uses the photons from the sunlight as energy to fixate CO₂ (which is in the air). This CO₂ is fixated and metabolized by the plant and produces glucose as the final product.
A squirrel, which is an animal, obtains its energy by the degradation of compounds found in the food (for example, a nut). Among other components, we can find carbohydrates, especially polymers formed by glucose monomers bound together. This polymer is first degraded by the saliva to monomers of glucose. This glucose is internalized and metabolized by the cells and after its lysis and passage through the Calvin cycle, it produces energy in the form of ATP and CO₂ as a final product (this process is called respiration).
Please answer all and I will give you 50 points, you need to pick one for each
Answer:
1. 3
2. 2
3. 4
4. 1
Explanation:
Julius went swimming at the lake. While he was playing on the shore, he found
a rock and a stick, and he threw them both in the lake. The rock sank to the
bottom, and the stick floated on top of the water. What must be true about the
stick and the rock?
Answer:
the rock is dencer than the water and the stick has more surface tension.
Answer:
The rock is heaver so it sinks to the bottom of the lake, and the and the stick is lighter so it floats.
Hope this helps☺️
when the amount of energy increases, what happens to the frequency of that wave?
Which two ideas about energy were lost when the caloric idea was abandoned?