Answer:
Explanation:
In heterogeneous mixtures, two or more ingredients (or phases, regions with uniform composition and properties) intermingle, but remain physically separate. Often it is possible to separate the original ingredients by physical means, such as filtering.
An empty paper cup is the same temperature as the air in the room. A student fills the cup with cold water. Which of the following describes how thermal energy is transferred?
Answer:
Thermal energy is transferred from the cup to the cold water until they are at the same temperature
Explanation:
The second law of thermodynamics states that the entropy of an isolated system can only remain constant or increase, and will have a decreased potential energy than its initial state and also indicating that heat, or thermal energy, can only spontaneously flow from a hotter body to a colder body so as to attain thermal equilibrium
Therefore since the cup and the water form a thermodynamic system, with water being the colder body and the cup being the relatively hotter body, thermal energy can only be transferred from the cup to the cold water until they both reach thermal equilibrium or until they are at the same temperature.
What is the apparent relationship between density and hardeness
Since hardness measurement involves only surface of the material, bulk density of the material does not have any explicit relation with the hardness. Materials are usually subjected to microstructural and/or chemical changes in the surface by carbiding, nitriding and other processes, many times by cold working.
The structure of the surface of the material is almost always different from the structure inside the bulk, it would be a very complicated and complex relationship, if anyone ever tries to establish it and may not prove that beneficial also
What is the density of an object with a mass of 180 grams and a volume of 45 cm3?
Plz answer fast
Answer:
4g/cm^3
Explanation:
The formula for density is mass divided by volume. 180g is your mass, 45cm^3 is your volume, divide the two to get your answer.
The density of an object with a mass of 180 grams and a volume of 45 cm is 0.4 kg/m.
What is density?The measure of the matter is mass. Density and volume can be multiplied to determine the mass. Determining how tightly something is packed. It has such a definition since it is the mass per unit volume.
Volume is the area that a thing takes up. If you weigh two liquids with identical quantities or amounts, the heavier liquid is denser. When gently introduced to the water's surface, a substance that is less thick than water will float.
So the formula will be d = m / v
The mass of the object is 180 g
The volume of the object is 45 cm
Putting the value in the formula
d = 180 g / 45 cm = 0.4 kg/m
Thus, the density of an object will be 0.4 kg/m.
To learn more about density, refer to the link:
https://brainly.com/question/952755
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The table lists human organs and their functions
Human organ
skeleton
heart
Jungs
brain
Function
gives shape and aids movement
pumps blood around the body
interprets messages
Which phrase correctly completes the chart?
A pumps blood from the lungs to body parts
provides oxygen to the blood
provides a ngid support system
D controls how internal organs function
provides oxygen to the blood
Which pure substance can be classified as an element?
H2
NO3
NaCl
H2SO4
Answer:
H2
Explanation:
on edge
______ and _____ are found in the nucleus
Answer:
B
Both protons and electrons are found in the nucleus. There are not always an even number, but both still exist. The answer is B. Hope it helps!
Answer:
Protons and Neutrons are found in the nucleus
Explanation:
How can you change the properties of steel E.G designing steel
Answer:
A third way to change the properties of steel is by adding alloying elements other than carbon that produce characteristics not achievable in plain carbon steel. ... A good example of the effects of alloying is the making of a high-strength steel with good weldability
I think this is a same mean
3. Think of some examples
of situations in which
you shouldn't use the
height of an object above
the ground to calculate its
gravitational potential
energy
A hypothetical element consists of four isotopes. Use the information below to calculate the average atomic volume mass of the element. Work must be shown for credits to be given.
Answer:
104.969 amu.
Explanation:
From the question given above, the following data were obtained:
Isotope A:
Mass of A = 107.977 amu
Abundance (A%) = 0.1620%
Isotope B:
Mass of B = 106.976 amu
Abundance (B%) = 1.568%
Isotope C:
Mass of C = 105.974 amu
Abundance (C%) = 47.14%
Isotope D:
Mass of D = 103.973 amu
Abundance (D%) = 51.13%
Average atomic mass =?
The average atomic mass of the element can be obtained as follow:
Average atomic mass = [(Mass of A × A%) /100] + [(Mass of B × B%) /100] + [(Mass of C × C%) /100] + [(Mass of D × D%) /100]
Average atomic mass = [(107.977 × 0.1620)/100] + [(106.976 × 1.568)/100] + [(105.974 × 47.14)/100] + [(103.973 × 51.13)/100]
= 0.175 + 1.677 + 49.956 + 53.161
= 104.969 amu
Therefore, the average atomic mass of the element is 104.969 amu.
How many grams of sugar are in 200 g of a solution that is 15% sugar by mass
Answer:
Of the solution, 30g of it is sugar.
Explanation:
15% = 0.15
200 * 0.15 = 30
Best of Luck!
Question 1 of 10
What type of force are you exerting when you lie on a bed?
O A. Compression
B. Magnetic force
Ο Ο Ο Ο
C. Electric force
D. Tension
Answer: at type of force are you exerting when you lie on a bed?
O A. Compression
B. Magnetic force
Ο Ο Ο Ο
Explanation:
what do i do if me mum is a karen
Answer:
you gotta call her manager dead or alive
Please help! I’m begging youuuuuuuuuuuuuuu
can sb helppppppppppppp
Explanation:
Copper does not react with HCl to give H2 gas.
Which of the following best describes the particles that make up lightning and the particles that make up the water in a bottle?
Those in lightning are charged and those in water are not charged.
Those in lightning slide past one another and those in water bounce off and collide against each other.
Those in lightning are only negatively charged and those in water are only positively charged.
Those in lightning are tightly held in position and those in water bounce off and collide against each other.
Answer:
Those in lightning are charged and those in water are not charged.
Explanation:
The particles in lightning differs from those in a water in that water molecules are neutral and those of lightning are charged.
Lightning is made up of charged ions or particles that have either lost or gained electrons.
Lightning is produced as a burst or discharge of charged particles that are imbalanced withing the clouds.
Water molecules are made up of hydrogen and oxygen atoms which forms molecules held together by strong intermolecular and interatomic bonds.
Due to the sharing of electrons that has made this bonding possible, there is a net charge balance which leads to a neutrality.
Water is electrostatically neutral and not charged.
Answer:
Those in lightning are charged and those in water are not charged. Hope this helps! Brainliest plz! If you want :)
Explanation:
ASAP MULTIPLE CHOICE
Who discovered the electron?
J.J. Thomson
John Dalton
Antoine Lavoisier
Robert Millikan
What are the main properties of matter?
Answer:
mass,colors,density, volume, melting point and temperature.
A soda has a volume of 225 ml and a density of 3.2 g/ml. What is the mass
Answer:
The answer is
720 gExplanation:
The mass of a substance when given the density and volume can be found by using the formula
mass = Density × volumeFrom the question
volume = 225 mL
density = 3.2 g/mL
The mass is
mass = 3.2 × 225
We have the final answer as
720 gHope this helps you
Which best characterizes a crystal?
a number of high speed particles moving randomly
a dense substance that is hard and incompressible
a high-energy state of matter made up of a swirling, ionized gas
a loose association of particles moving past one another
Answer:
A dense substance that is hard and in compressible
Explanation:
I just took the unit review on edge
Answer:
B
Explanation:
For Edge:)
Matthew records the temperature outside for one day. From 10:00 a.m. to 12:00 p.m., the
temperature rises 4°C. From 12:00 p.m. to 2:00 p.m., it rises another 3°C. From 2:00 p.m. to 4:00
p.m., it drops 2°C. Which of the following predictions about how the temperature will change
between 4:00 p.m. and 6:00 pm. is most reasonable?
The temperature will rise 3°C.
The temperature will drop 14°C.
o the temperature will stay the same
The temperature will drop 4°C.
Answer:
The temperature will drop 4°C.
Explanation:
Note that this question is describing temperature change in response to the time of the day. Ideally, mornings to afternoons are usually hotter while evenings are colder.
According to this question, the temperature rises by 4°C from 10:00 a.m. to 12:00 p.m. it also rises another 3°C from 2:00 p.m. to 4:00 p.m but starts dropping by 2°C from 2:00pm to 4:00pm. This shows that between the hours of 10:00am - 2:00pm, the temperature increases as a result of the heat from sun. However, towards the evening period, the temperature reduces because the sun is getting shadowed by the moon.
Hence, based on this analogy, the most reasonable prediction about how the temperature will change from. 4:00am to 6:00am is that The temperature will drop 4°C.
Where do most fungi thrive?
Question :
Where do most fungi thrive ?
Answer :
Fungi are found all around the world and grow in a wide range of habitats, including deserts. Most grow on land (terrestrial) environments, but several species live only in aquatic habitats. Most fungi live in either soil or dead matter, and many are symbionts of plants, animals, or other fungi.
Source :
CK-12 , Edgenuity2020
Why do all polar/polar and non polar/non polar mixtures dissolve when mixed together
Answer:
[tex]\huge\blue{answer}[/tex]
Because water is polar and oil is nonpolar, their molecules are not attracted to each other. ... Because water molecules are polar, they interact with the sodium and chloride ions. In general, polar solvents dissolve polar solutes, and nonpolar solvents dissolve nonpolar solutes.
Explanation:
hope i helps u
Which element has the electron configuration [Xe] 682 444 500 6p??
O A. gold (atomic number 79)
OB. mercury (atomic number 80)
OC. lead (atomic number 82)
OD. potassium (atomic number 19)
OE.
copper (atomic number 29)
Answer:
The answer is C
Explanation:
Answer:
c
Explanation:
Which is the best description of a computer virus?
O a program that can damage a computer
O a hacker who adds programs to a computer
a scam that steals information from a computer
a biological disease that destroys a computer
The best discription of a computer virus is that it is a program that can damage a computer.
What is computer virus?A computer virus is a sort of computer software that repeats itself by altering other computer programs and injecting its own code when it is run.
So it is a type of program which can damage a computer.
Virus is not a program that can be added by hacker.It is also not a scam that steals information.And it is also not a biological disease.Hence virus is a program that can damage a computer.
To know more about computer virus, visit the below link:
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Answer: It's A: a program that can damage a computer
Explanation:
Your solution has a volume of 36 ml and a mass of 970 g. what is the density of your solution
Answer:
The answer is
26.94 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\ [/tex]
From the question
mass = 970 g
volume = 36 mL
The density of the object is
[tex]density = \frac{970}{36} \\ 26.944444...[/tex]
We have the final answer as
26.94 g/mLHope this helps you
An atomic physicist determines that an atom is composed of 8 positively charged particles and has a mass of 15 amu. Which is the best conclusion that can be drawn? The atom has 7 neutrons and 8 protons. The atom has 7 electrons and 8 protons. The atom has 8 neutrons and 7 electrons. The atom has 8 electrons and 7 protons.
Answer: The atom has 7 neutrons and 8 protons.
Explanation: On Edhenuity!!!!!!!!!
Answer:
The atom has 7 neutrons and 8 protons.
(A on edge)
Explanation:
To solve for neutrons you subtract the Atomic mass by the proton numbers. So the equation would be 15-8=7 and that is your neutron number. 8 is proton number(it says it in the question). Hope this helps! :)
A ____ is an environment in which all of an organism’s needs are met.
Answer:
habitat?
Explanation:
How many atoms are in KOH?
Answer:
KOH contains only one K, so a mole of KOH contains one mole of K. How many atoms of K are in 1 mole of KOH? There are 6.022 × 1023 atoms of potassium in every mole of potassium. Since one mole of KOH contains one mole of K, the answer is 6.022×1023 atoms of K.
Explanation:
Convert to scientific notation: 0.0002030552
Answer:
= 3.456 × 1011
(scientific notation)
= 3.456e11
(scientific e notation)
= 345.6 × 109
(engineering notation)
(billion; prefix giga- (G))
= 345600000000
(real number)
Answer:
Standard form.
Explanation:
(115 pts.) Ferrous nitrate reacts with silver nitrate in aqueous solution to form ferric nitrate and metallic
silver according to the chemical equation
Fe(NO3)2(aq) + AgNO3(aq) + Fe(NO3)3(aq) + Ag(s),
for which K = 3.0.
(a) Derive the net ionic equation for this reaction.
(b) Determine whether the reaction is a replacement reaction or an oxidation-reduction
reaction, and, in the latter case, identify the oxidizing and reducing agents.
(c) Write the expression for Q in terms of the activities (the [] symbols) of the species
responsible for driving the reaction to equilibrium.
Answer:
Explanation:
a )
Fe(NO₃)₂(aq) + AgNO₃(aq) = Fe(NO₃)₃(aq) + Ag(s)
Fe⁺² + 3NO₃⁻ + Ag⁺ = Fe⁺³ + Ag + 3NO₃⁻
b )
Reaction is an oxidation - reduction reaction .
oxidation :--
Fe⁺² = Fe⁺³ + e⁻
Reduction : ---
Ag⁺ + e = Ag
c )
Q = [ Fe( NO₃)₃ ] / [ Fe(NO₂) ] [ AgNO₃ ]
