Answer:
d. Each substance in a mixture keeps most of its characteristic properties
Explanation:
Compound is formed by the fixed composition of two or more substances while mixture is formed by the different composition of two or more substances.
Compound and mixture are different from each other as each substances in mixture shows its own properties while compounds shows a different new properties.
Hence, the correct answer is "d".
the average diameter of an adult human eyeball is 24mm what is the diameter in dm
Answer: 0.24 dm
Explanation:
When a substance is added to water, bubbles form. How can you confirm the type of change that took place?
Which of the following statements best describes how metamorphic rock was formed?
A. Low temperature and low pressure may transform an igneous rock into a metamorphic rock with banded layers.
B. High temperature and intense pressure may transform an igneous rock into a metamorphic rock with banded layers.
C. Low temperature intense pressure may transform a sedimentary rock into a metamorphic rock with banded layers.
Answer:
High temperature and intense pressure may transform an igneous rock into a metamorphic rock with banded layers.
Explanation:
A metamorphic rock is formed under high temperature and intense pressure may transform an igneous rock into a metamorphic rock with banded layers.
An igneous rock is often formed when molten magma erupts from the earth's crust. The molten magma is usually very hot but cools off with time to form a solid mass.
This rock that was first formed eventually gets transformed in the course of time as it is acted upon by high temperature and intense pressure which gradually transforms the igneous rock into a metamorphic rock with banded layers.
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How many atoms of aluminum are in 4.9 mol of aluminum?
Answer:
8.14 mols al
Explanation:
Isotopes of the same element have a different number of ______
Answer:
atomic weight..................
As of January 2009, the USA has produced 60,000 metric tons of nuclear waste in 60 yesrs of operating 104 nuclear power plants.
on average how much waste is produced by each plant on a monthly basis?
a. 0.8 tons p. month
b. 83.3 tons p. month
c. 104 tons p. month
d. 866.3 tons p. month
Answer: a. 0.8 tons p. month.
Explanation:
Given: Total nuclear waste = 60,000 metric tons
Time take = 60 years = 12 x 60 months [ 1 year = 12 months]
= 720 months
Total nuclear power plants = 104
Now , Average waste produced by each plant = [tex]\dfrac{\text{Total waste}}{\text{Time x Number of plants}}[/tex]
[tex]=\dfrac{60000}{720\times104}\approx0.8\text{ tons per month.}[/tex]
Hence, 0.8 tons p. month is produced by each plant.
So, option a. is correct.
Answer:
A on edge 2021
Explanation:
Temperature Changes (Iron)
Measure the initial temperature of the water to the
nearest 0.1°C. Record in the data table.
Initial temperature of metal =
PC
Initial temperature of water =
"С
Final temperature of both =
27
DONE
26
25
24
23
2
250 ml
Continue
Intro
12 of 15
The temperaturechanges for iron and water is calculated using the formula: Temperature change = Final temperature - Initial temperature.
Measurements of temperatureTemperature measures the degree of hotness or coldness of a body.
In measuring temperature, a thermometer is the instrument used.
To determine temperature changes, the initial and final temperature of the substance is recorded.
The temperature change is calculated using the formula below:
Temperature change = Final temperature - Initial temperature.In the case of an iron at higher temperature dipped in water at lower temperature, the initial and final temperature of both the water and Iron is recorded.
The formula given above is used to calculate the temperature change.
Therefore, temperature change is calculated using the formula: Temperature change = Final temperature - Initial temperature.
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plz help this is due today and plz dont get from internet.
Hello There, I hope you are having a great day :) Your Question: Which is not a characteristic of asexual reproduction? I would say the answer is D the diverse offspring because they would not be a clone of there parnets.
Hopefully, that help you :)
Question 4
1 pts
Which of the following atoms has the smallest atomic
radius?
A. Be
B. Li
C. C
D. F
Answer:
B Li
Explanation:
.........................
Calculate the empirical formula of each of the following substances with the following compositions.
a 3.60 g of magnesium and 10.65 g of chlorine
b 9.1 g of lithium and 10.4 g of oxygen
Explanation:
Note: Molar masses of elements can be found online or in the periodic table.
Moles of Magnesium
= 3.60g / (24.3g/mol) = 0.148mol.
Moles of Chlorine
= 10.65g / (35.45g/mol) = 0.300mol.
Mole ratio of Magnesium to Chlorine
= 0.148mol : 0.300mol = 1 : 2.
Hence we have the empirical formula MgCl2.
Moles of Lithium
= 9.1g / (6.94g/mol) = 1.311mol.
Moles of Oxygen
= 10.4g / (16g/mol) = 0.650mol.
Moles ratio of Lithium to Oxygen
= 1.311mol : 0.650mol = 2 : 1.
Hence we have the empirical formula Li2O.
A vehicle travels 60. km north and then 40. km south. What is its total displacements?
Answer:
20 km north that's the answer hope it helped
During the process of condensation, water vapor does what
Answer: the water molecules become more organized and heat is released into the atmosphere as a result.
Explanation:
which of the following is a possible consequence of a mare laboring for a lengthy time after amniotic sac has broken
Answer:
c. the mother could get an infection
Explanation:
Describe a macroscopic properties of a solid
Which of the following is the correct equation for the reaction below?
One molecule of propane gas reacts with five molecules of oxygen gas to form three molecules of carbon dioxide gas and four molecules of water vapor.
A. CzHg (g) + 502 (9) ► 3C02 (9) + 4H20 (9)
B. C3Hg (s) + 502 (s) — 3CO2 (s) + 4H20 (3)
C. CH (9) + 502 (9) — 3C02 (9) + 4HO (9) D. CzHg (9) + 50 (g) → 3C0 (g) + 4H20 (9)
need asap
Answer:
C₃H₈ + 5O₂ → 3CO₂ + 4H₂O
Explanation:
One molecule of propane gas reacts with five molecules of oxygen gas to form three molecules of carbon dioxide gas and four molecules of water vapor.
To every chemical equation, there are products and reactants:
Reactants → Products
Here:
Reactants:
1 mole of propane = C₃H₈
5 mole of oxygen gas = 5O₂
Products;
3 mole of CO₂ = 3CO₂
4 moles of water vapor = 4H₂O
The reaction equation is therefore;
C₃H₈ + 5O₂ → 3CO₂ + 4H₂O
Answer:
C3H8 (g) + 5O2 (g) → 3CO2 (g) + 4H2O (g)
Explanation:
This is the actual answer
Describe what a geologist would observe if she poured acid on the sculpture
Answer:
A geologist would observe how the material that the sculpture is made out of reacts to the acid.
C3H8 (g) 5O2 (g) -> 3CO2 (g) 4H2O (l) in the reaction represented baove, what is the total number of moles of reactants consumed when 1.00 mole of CO2 (g) is produced
Answer:
The total number of moles of reactants consumed when 1.00 mole of CO₂ (g) is produced is 2 moles.
Explanation:
You have that the balanced reaction is:
C₃H₈ (g) + 5 O₂ (g) ⇒ 3 CO₂ (g) + 4 H₂O (l)
By stoichiometry of the reaction (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of reactants and products participate in the reaction:
C₃H₈: 1 moleO₂: 5 molesCO₂: 3 molesH₂O: 4 molesThe rule of three or is a way of solving problems of proportionality between three known values and an unknown value, establishing a relationship of proportionality between all of them.
If the relationship between the magnitudes is direct, that is, when one magnitude increases, so does the other (or when one magnitude decreases, so does the other) , the direct rule of three must be applied. To solve a direct rule of three, the following formula must be followed:
a ⇒ b
c ⇒ x
So [tex]x=\frac{c*b}{a}[/tex]
where a, b and c are known values. In this case the rule of three is applied as follows: if by stoichiometry of the reaction 3 moles of CO₂ consume 1 mole of C₃H₈, then 1 mole of CO₂ how many moles of C₃H₈ will it consume?
[tex]moles of C_{3} H_{8} =\frac{1 mole of CO_{2} *1 mole of C_{3} H_{8} }{ 3moles of CO_{2}}[/tex]
moles of C₃H₈= 0.33
Applying again a new rule of three: if by stoichiometry of the reaction 3 moles of CO₂ consume 5 moles of O₂, then 1 mole of CO₂ how many moles of O₂ will it consume?
[tex]moles of O_{2} =\frac{1 mole of CO_{2} *5 moles of O_{2} }{ 3moles of CO_{2}}[/tex]
moles of O₂=1.67
The total number of moles of reactants consumed will be the sum of the consumed moles of C₃H₈ and the consumed moles of O₂:
0.33 moles + 1.67 moles=2 moles
The total number of moles of reactants consumed when 1.00 mole of CO₂ (g) is produced is 2 moles.
what is it called when when animals release water vapor into the atmosphere
Answer:it’s so they could breathe
Explanation:the water cycle
Mr. Powell is demonstrating the water cycle. He shapes mountains out of clay on one end of a glass aquarium to represent land. He then pours some water into the aquarium and places a glass lid on it. Next, he turns on a lamp above the aquarium and, finally, he places a container filled with ice on the glass lid. In this model, which choice correctly identifies evidence of condensation? water droplets falling on the clay less water in the bottom of the aquarium water running from the clay into the water water forming on the lid under the container
Answer:
Water droplets falling on the clay.
Explanation:
I know you already submitted it but I wanna help others out.
Calculate the density of an object with a mass of 15.6 grams and a volume of 2 cm3
Answer:
7.8 g/cm³
Explanation:
The density of an object can be defined as the object's mass divided by its volume:
Density = mass / volumeWe are given both the mass and volume by the problem, so we compute the data in the equation:
Density = 15.6 g / 2 cm³Density = 7.8 g/cm³This means the density of the object is 7.8 g/cm³.
If you have 3 moles of CH4 , how many moles of CO2 are produced?
Answer:
Since you are producing 3.6 mol CO2, you can calculate the starting moles of CH4 with the simple mole-to-mole ratio: 1 mol CH4 / 1 mol CO2 as a conversion factor. Taking 3.6 mol CO2 x 1 mol CH4 / 1 mol CO2 = 3.6 mol CH4 (after canceling out the moles of CO2 on the top and bottom of the calculation)
Explanation:
_______________ is a process by which oranisms best fit for the environment are most likely tp survive and reproduce
Answer:
Natural selection is a process by which organisms best fit for the environment are most likely tp survive and reproduce.
Explanation:
According to Charles Darwin's principles of development by natural preference, organisms that maintain heritable characteristics that empower them to better acclimate to their environment associated with other segments of their varieties will be more likely to endure, reproduce, and transfer more of their genetics on to the next generation.
How many moles are there in 2.3 x 10^23 formula units of NaCl?
Answer:
0.38 mol
Explanation:
Given data:
Number of formula units = 2.3×10²³
Number of moles = ?
Solution:
According to Avogadro number ,
1 mole contain 6.022×10²³ formula units.
2.3×10²³ formula units × 1 mol / 6.022×10²³ formula units
0.38 mol
Thus, 2.3×10²³ formula units of NaCl contain 0.38 moles of NaCl.
why is P4S3 a covalent bond?
Answer:
Phosphorus sesquisulfide, free from yellow and white phosphorus appears as a yellow crystalline solid. Easily ignited by friction. Forms sulfur dioxide and phosphorus pentaoxide during combustion. Reacts with water to form phosphoric acid, a corrosive material. Used to make matches and in the manufacture of other chemicals.
Explanation:
Based on the image below, what would an observer on the nighttime side of Earth observe? A total lunar eclipse A partial lunar eclipse A partial solar eclipse A Full Moon
Answer:
A Full Moon
Explanation:
If it is the same image I had it would be a full moon since there are no shadows on the moon. This means the moon gets full sunlight
Which one of the following does not involve a change of state? *
Freezing
Melting
Expansion
Boiling
Answer:
melting is the answer any questions I'm glad to help
When solid converts to gas then heat is required to break the intermolecular forces of attraction between the particles. In this process heat increase but temperature remains the same. Therefore, the correct option is option C.
What is phase transition?Phase transition is a process in which transition takes place from one state to another of a medium on changing temperature or pressure. Phase transition is a physical process as there is no breaking of old bond and forming of new bonds takes place.
During phase transition temperature remain constant as the extra heat that is given to the system that goes into breaking of intermolecular forces of attraction between the particles. So overall temperature remains same but heat keeps on increasing. Among all the given option, expansion is the only process in which change of state does not take place.
Therefore, the correct option is option C.
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The protons account for about half the mass of most elements. Protons are located in the atomic nucleus along with the neutrons and the protons have an electrical charge of
Answer:
+1
Explanation:
The electrical charge on protons are positive charges.
Protons are subatomic particles and they carry positive charges on them. In all instances, they are found in the tiny nucleus along with neutrons.
Both protons and neutrons contributes the bulk mass of an atom whereas electrons is negligible and inconsequential to the mass of the atom.
Electrons carry negative charges within an atom with a charge of -1Neutrons are uncharged subatomic particles. Protons carry positive charges, +1a microscope is a labolatory tool that is used to__________ this allowed scientists to ____________ we cannot see using our naked eyes such as _____ protists ______and___________ the main parts of a microscope that magnifies are the __________ and the ___________. the__________ serves as the light source. in order to see he specimen clearly the stage needs to be adjusted at the right distance from the lens. this is done using the __________ and _______. other parts of the microscope such as the______. ______ and _________ serves as a primary support for device
Answer:
See the answer below
Explanation:
A microscope is a laboratory tool that is used to magnify the image of objects This allowed scientists to study tiny organisms that cannot be seen with an ordinary eye. We cannot see some organisms using our naked eyes, such as bacteria, protists, viruses, and microscopic fungi. The main parts of a microscope that magnifies are the ocular and the objective lenses. the lamp serves as the light source. In order to see the specimen clearly the stage needs to be adjusted at the right distance from the lens. this is done using the coarse and the fine adjustment knobs. other parts of the microscope such as the base and the arm serve as primary support for the device.
The microscope is primarily designed to magnify the image of objects and, thus, enables one to see objects that cannot ordinarily be seen with the naked eyes. It magnifies objects using a system of lenses in the ocular and the eyepiece. Microscopic organisms such as protists, bacteria, viruses, microscopic fungi and algae can be seen using the microscope. Slides of objects are prepared and placed on the stage of the microscope and the coarse/fine adjustment knobs used to adjust the stage in order to bring the image on the slide into focus through the ocular. A lamp at the base provides the light source for the light microscope while other parts such as the arm, the head, and the base provide supportive functions for the microscope,
The description, features and function of a microscope can be found explained below.
MICROSCOPE:
A microscope is a laboratory tool that is used to magnify images. This allows scientists to study tiny organisms that cannot be seen with the naked eye. We cannot see some organisms using our naked eyes, such as bacteria, protists, viruses, and microscopic fungi. The main parts of a microscope that magnifies are the eye and objective lenses. The lamp serves as the light source. To see the specimen clearly the stage needs to be adjusted at the right distance from the lens and this is done using the coarse and the fine adjustment knobs. Other parts of the microscope such as the base and the arm serve as primary support for the device.Learn more at: https://brainly.com/question/18661784?referrer=searchResults
how many electrons does tellurium need to obtain the octet rule
Answer:
8
Explanation:
This number normally equals the number of electrons that atom needs to have a total of eight electrons (an octet) in its outer shell.
When can I use ideal gas law?
