Which way of preparing food models a physical change that happens to food within the digestive system?
Select one:
Freezing juice in an ice-pop mold
Frying an egg in a skillet
Grinding fruit in a blender
Burning a marshmallow over a flame
Answer:
im pretty sure its Frying an egg in a skillet
im so sry if im wrong have a nice day/night (:
which of the below would result in rearrangement of atoms at molecular level
a) salt dissolved in water
b) broken tree branches
c) gasoline combusts in an engine
d) steam rising from hot pavement
The best answer is
A) The atoms in the mineral get rearranged
Explanation:
How does the ionosphere help radio transmission?
Explanation:
ionosphere can reflect radio waves directed into the sky back toward the Earth
Help, and fast! I really need an answer to this.
Answer:
Explanation:says these bars are like co vid i get em right off teh bat
Calculate the specific heat of glass from the following data. The temperature of a piece of glass with a mass of 65 g increases by 26°C when it absorbs 840 J of heat energy.
Answer:497J/kg/K
Explanation:
Use the equation: Q=mS◇T
According to specific heat capacity, the specific heat of glass is 0.4970 J/gK.
What is specific heat capacity?Specific heat capacity is defined as the amount of energy required to raise the temperature of one gram of substance by one degree Celsius. It has units of calories or joules per gram per degree Celsius.
It varies with temperature and is different for each state of matter. Water in the liquid form has the highest specific heat capacity among all common substances .Specific heat capacity of a substance is infinite as it undergoes phase transition ,it is highest for gases and can rise if the gas is allowed to expand.
It is given by the formula ,
Q=mcΔT
Substituting values in above equation, c=Q/mΔT, C=840/65×26=0.4970 J/gK.
Thus, the specific heat of glass is 0.4970 J/gK.
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What Phase is water at 120 degrees Celsius?
HELP!! ASAP!! WILL MARK BRAINLIEST!!!!!!!!!!!!!!!!
A silicon (Si) wafer is being fabricated by doping with boron (B) atoms. Which type of semiconductor is this?
Question 19 options:
A)
P-type
B)
Intrinsic
C)
Intrinsic and n-type
D)
N-type
According to Hund's rule, what's the expected magnetic behavior of vanadium (V)?
Question 20 options:
A)
Ferromagnetic
B)
Diamagnetic
C)
Non-magnetic
D)
Paramagnetic
Which group or groups of atoms are the only atoms with f orbitals?
Question 10 options:
A)
All noble gases
B)
All atoms heavier than barium (Ba)
C)
All atoms heavier than krypton (Kr)
D)
Lanthanides and actinides
What are the only elements that make up organic compounds?
Question 2 options:
A)
Carbon, hydrogen, oxygen, and nitrogen
B)
Germanium, hydrogen, potassium, and nitrogen
C)
Carbon, hydrogen, lithium, and silicon
D)
Silicon, hydrogen, carbon, and nitrogen
Answer:
1. P-Type, 2. Paramagnetic, 3. Lanthanides and Actinides, 4. Carbon, hydrogen, oxygen, and nitrogen
Explanation:
Convert 48.5 grams of water to moles of water
Answer:
2.70 mol of water.
Explanation:
divide the given mass by the molar mass of water. 48.5 / 18.016g = 2.70 mol water.
May someone pls help me with this!
Answer:
Explanation:
1. Chemistry
2. Atoms
3. Anode
4. Cathode
The age of the seafloor __________as you move away from the mid ocean ridges to deep ocean trenches
A decreases
B increases
C does not change
Answer:
stays the same
Explanation:
because the ocean floor usually doesn't spread instead the ocean floor plunges into deep under water canyons called deep ocean trenches.
If 150 g of sucrose dissolved in a 1.50 L water what is the molarity of a solution
Answer:
0.2923 molar
Explanation:
M = given mass /(molar mass× volume)
150/342(1.5)
150/513
0.2923M
In a chemical reaction _________ are the substances present after the reaction?
(PLEASE HELP! I NEED TO GET THIS DONE BY 11:00 PM! SOMEONE TELL ME HOW TO GIVE BRAINILIST BEACAUSE THE PERSON THAT GETS THIS I WILL GIVE BRAINALIST! BUT I DONT KNOW HOW TO SO TELL ME PLEASE! HELPPPPPPPPPPPPPPPP!)
P.S(sorry about the long yelling and again... im in middle school so I am just going to pick chemistry because I don’t know which subject this is, it just says photosynthesis)
Answer:
The substances present after the reaction are called products.
Explanation.
They are called reactants at the start of the reaction.
9.25x10^-8 x6.40x10^3 in scientific equation
Answer:
5.92E-4 or 5.92x10^-4
Explanation:
ANSWER ASAP What are the ions present in the compound MgO? * 1
(1 Point)
Mg2+ and O-
Mg2- and O2+
Mg+ and O-
Mg2+ and 02-
Answer:
mg+ and O-
Explanation:
HOPE IT HELPS
How have observations in the sky enabled humans to explore and travel?
Answer:
Observations of the sky allowed explorers to mark the passage of time both in hours and through the months of the year. Early astronomers also realized that the night sky does not look the same from different places on the Earth.
Bi2(C2O4)5 compound name
Answer:
Bismuth oxalate
Explanation:
I don't know what to do about this now. I like her a lot; I don't want to just give up on this because I see relationship potential with this girl. And I feel she genuinely does enjoy the time she spends with me too.
Answer:
Awe ...
Explanation:
A class investigated the reactivity of four metals by dropping little pieces of the
metals into solutions of their salts.
When there was a reaction they recorded a `Y’, when there was no reaction they
recorded an `N’.
Here is their table of results.From their results, which is the least reactive metal?
The least reactive metal is lead, since it reacted with none of the salt solutions.
Write one paragraph!!!!!reasons why the minimum wage should be increased.
Answer:
There are pros and cons, I will explain mostly pros. After all the pros outweigh the cons.
Explanation:
Increasing the minimum wage can be letting people work less or earn more. This can have a major impact on the economy in America. It can reduce poverty within some families households. A con concerning this though is that people who work for low pay can lose their jobs and their family can become poor. It can also affect the federal minimum wage.
Hopefully this helped you out a lot. Please make sure to make my answer brainliest. Have a great rest of your day or night
Answer:
Minimum wage increases allow people to work less and earn more. This may have a significant influence on the American economy. It can help some families get out of poverty. People who labor for little compensation risk losing their employment and being unable to provide for their families, which is a drawback. As a result, the federal minimum wage may also be affected.
Explanation:
plzzz brainlest
what would be the colour of litmus in sodium carbonate?
will make brainliest
Answer:
the color of the litmus paper will turn into blue color because sodium carbonate is basic in nature
The solids and liquids with the strongest intermolecular forces of attraction will have the
lowest melting and boiling points.
a. TRUE
b. FALSE
HELP I HAVE TO SUBMIT IN 5 MINS!!!!!!! :( I HAVE NO IDEA!!!
someone please give me a sentence using “chemical bond”
Answer:
Rust, iron oxide, is weak mechanically although its chemical bonds are strong.
Explanation:
Which of the following statements are true?
1. The number of protons in an element is always the same for all
neutral atoms of that element.
II. The number of electrons in an element is always the same for all
neutral atoms and ions of that element. .
III. The number of neutrons in any element is always equal to the
number of protons of that element.
IV. The number of neutrons in an element can sometimes vary -
resulting in the formation of an unstable isotope that is
slightly
more (or less) massive than the stable atom of the same element.
Answer:
roman number3
Explanation:
An atom has 15 electrons. How many are on each shell? *
0 2,8,7
0 2,8,5
8,7
15
Answer:
So... for the element of PHOSPHORUS, you already know that the atomic number tells you the number of electrons. That means there are 15 electrons in a Phosphorus atom. Looking at the picture, you can see there are two electrons in shell one, eight in shell two, and five in shell three.
Both the stomach and the small intestine are involved in the digestion of food.
The churning of food by stomach muscles and peptidase enzymes in the small
intestine both break food molecules into smaller molecules.
Which statement best describes changes to food during digestion?
Answer: I think the answer is The muscle contractions result in physical changes, while the action of the peptidase results in chemical changes.
Explanation: Because the muscles would make the food smaller and the enzymes have a chemical change to it because it changes the molecules in the food.
The chemical processes in food digestion results in the formation of new
substances.
The statement that best describes the changes in food during digestion is;
The churning of the food is a physical process, which results in physical changes while the peptidase results in chemical changes of the food.
Reasons:
The given processes in the digestion of food are;
Stomach: Food churning is the process by which the small intestine vigorously turns ingested food.
Small intestine: The action of the peptidase enzyme is to increase the rate of the digestion of food.
Therefore;
The churning of the food is a physical process, which results in physical changes while the peptidase results in chemical changes of the food.
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The possible question options obtained from a similar question online are;
The churning of the food and peptidase action both results in chemical changes.The churning of the brings about a chemical change, while the peptidase results in a physical change.The churning action brings about physical change, while the peptidase brings about chemical change.Both the churning action and the action of the peptidase result in chemical change.The atmosphere insulates the planet by trapping in
what are three uses of oxygen ?
Answer:
Production Of Steel Plastics and textiles
Explanation:
It is many more etc
In carbon dioxide, London dispersion forces are the only intermolecular forces of
attraction.
a. TRUE
b. FALSE
Answer:
true
Explanation:
CO has two C-O bonds. The dipoles point in opposite directions, so they cancel each other out. Thus, although CO₂ has polar bonds, it is a nonpolar molecule. Therefore, the only intermolecular forces are London dispersion forces.
It has been raining for several days. Overnight, the temperature dropped below the freezing point. Travel is now hazardous due to ice forming on the roadways.
This is an example-
Answer: physical change
Explanation: