Answer:
Fundamentally, chemistry is the study of matter and change. The way that chemists study matter and change and the types of systems that are studied varies dramatically. Traditionally, chemistry has been broken into five main subdisciplines: Organic, Analytical, Physical, Inorganic and Biochemistry.
Explanation:
hope this helps
a car is traveling 35 miles/hr for 17 miles. How much time has the car been on the road?
a
595 hours
b
2.1 hours
c
1.5 hours
d
0.49 hours
Answer:
The car has been on the road for 0.49 hours
Explanation:
A car is traveling 35 miles/hr for 17 miles.
Speed of a car = 35 miles/hr
Distance travelled = 17 miles
The relationship between speed, distance, and time is given by
Distance = Speed × Time
Put Speed = 35 miles/hr, Distance = 17 miles
[tex]17=35[/tex] × Time
Time = [tex]\frac{17}{35}=0.49[/tex] hours
So, the car has been on the road for 0.49 hours
The time car has been on the road has been 0.49 hours. Thus, option D is correct.
Speed can be defined as the distance traveled by the object in unit time. The speed can be expressed as:
[tex]\rm Speed\;=\;\dfrac{Distance}{Time}[/tex]
The car has been given to be traveling at:
Speed = 35 miles/hr
Distance traveled = 17 miles.
The time taken by car to travel 17 miles can be calculated by substituting the values as:
[tex]\rm 35\;miles/hr\;=\;\dfrac{17\;miles}{Time}\\\\\\\\Time\;=\;\dfrac{17\;miles}{35\;miles/hr}[/tex]
Time = 0.49 hr.
The time taken by car to travel 17 miles has been 0.49 hours. Thus, the correct option has been D.
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Which of the following groups is not reactive? Circle all that apply.
a. Alkali metals
b. Alkaline earth metals
C. Halogens
d. Noble gases
when we don't use prefixe ina binary compound
Answer:
Explanation:
Answer will be wrong
Give me a testable or researchable question to collect data about
Answer: What are black holes and how do they work?
Explanation:
10. COMMUNITY EDUCATION A local community center offers self-defense classes for teens. A $25 enrollment
fee covers supplies and materials and open classes cost $10 each. Write an equation to represent the total cost of x
self-defense classes at the community center,
Answer:
25+10y=x
Explanation:
$25 initial cost
$10 per class (y)
total cost (x)
which would probably have the greatest effect on a proteins function - a change to the primary, secondary,or tertiary structure?
What type of harmful bacteria did they feed the mice in the experiment?
O C. difficile
O Salmonella
Bacilli
O E. coli
Answer:
I believe the answer is C. difficile but to be honest I don't know for sure
gravity and magnetism are examples of what?
Answer:
hyposthesis
Explanation:
Is hot chocolate a pure substance or a mixture? Explain.
Answer:
It is a mixture
Explanation:
Because it mixes chocolate, milk, sugar, and vanilla to make it sweet and not taste like plain cocoa powder.
3. How many different atoms are there in a compound?
A. one
C. two or more
B. always two
D. none of these
Answer: C
Explanation:
Help me I'm almost finished with this
Answer in 1234 statement or ABCD
Answer:
The liquid in beaker 1 has a higher density than the liquid in beaker 2.
During which phase does Earth see more than half of the moon's surface? first quarter third quarter waxing gibbous waning crescent
A: Frist quarter
b: third quarter
c: waxing gibbous
d: waning crescent
Answer:
c
Explanation:
During the "Third Quarter" phase, Earth sees more than half of the moon's surface. The correct option is B.
What is Waxing Gibbous and Waning Crescent?Waxing Gibbous and Waning Crescent are two phases of the Moon.
Waxing Gibbous is a phase of the Moon that occurs after the First Quarter phase and before the Full Moon phase. During this phase, the illuminated portion of the Moon is greater than half but less than fully illuminated, meaning it appears to be a "bulging" shape. The term "waxing" means that the illuminated portion of the Moon is increasing in size.
The Waning Crescent is a phase of the Moon that occurs after the Third Quarter phase and before the New Moon phase. During this phase, the illuminated portion of the Moon is less than half and decreasing in size. The term "waning" means that the illuminated portion of the Moon is decreasing in size. The crescent shape refers to the thin sliver of illuminated portion of the Moon that is visible during this phase.
Here in this question,
During the First Quarter phase, the right half of the Moon's surface is visible from Earth.
During the Third Quarter phase, the left half of the Moon's surface is visible from Earth.
During the Waxing Gibbous phase, more than half of the Moon's surface is visible, but Earth does not see more than half.
During the Waning Crescent phase, less than half of the Moon's surface is visible, and Earth does not see more than half.
Therefore, Option B i.e third quarter is correct.
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Whats the periodic table?
Answer:
A chart that shows the elements based on atomic number, from lowest to highest.
Explanation:
Answer:
The answer will be listed below.
Explanation:
The Periodic Table is a display of 118 different chemical elements. They are arranged by their atomic numbers. The Periodic table displays the element's chemical symbol, mass, atomic number, and what group they are in.
During which change of state do atoms lose energy
Answer: Atoms lose energy as a gas changes to a solid.
Explanation:
Answer:
Atoms lose energy as a gas changes to a solid.
Explanation:
Chemical formula for CrO
Answer:
Chromium oxide
Explanation:
Please Answer Quickly
The graph shows distance versus time for an object
A.
A.The object is moving with increasing acceleration.
B.The object is moving with increasing velocity.
C.The object is moving with constant velocity.
D.The object is moving with constant acceleration.
Answer:
I Pretty sure its b
Explanation:
The noble gases, or group 18, on the periodic table are known to be unreactive. Which of the following reason best describes why this family is so inert?
Their outer shells are full, they can't hold any more electrons.
Their outer shells need one electron to be full.
Their outer shells have 2 electrons.
Their outer shells have 1 electron.
Answer:
Their outer shells are full, they can't hold any more electrons.
what is 1 amu
please give me proper answer
Answer:
Explanation:
An atomic mass unit (symbolized AMU or amu) is defined as precisely 1/12 the mass of an atom of carbon-12. The carbon-12 (C-12) atom has six protons and six neutrons in its nucleus. In imprecise terms, one AMU is the average of the proton rest mass and the neutron rest mass.
When salt is dissolved in water, which is the solvent and which is the solute
Answer:
the solvent is water and the solute is salt
Explanation:
A solute is the component in a solution in the lesser amount. In a NaCl solution, the salt is the solute. A solution may contain more than one solute.
Another question please help!!! :)
The answer is [Boron]
I had this answer on my Chemistry test!
Changing subscripts is one of the steps of balancing a chemical equation.
True or False
Answer:
False
Explanation:
Changing the coefficients is one of the steps of balancing a chemical equation. Changing the subscript changes the compounds being used, while changing the coefficient changes the amount of each compound being used.
7.
Good scientists use honesty when reporting their observations
and results.
True,faulty or bias
Answer:
True is the answer because when you are observing in order to make a report especially when you are a scientist your reports must be based on exactly what you say in order to not give incorrect information for it could be very critical.
Which element is identified by the chemical symbol C?
A)cobalt
B)carbon
C)calcium
D)chlorine
Answer:
B Carbon
Explanation:
I really hopes this helps you!
What types of compounds are most likely to form double or triple bonds
Explanation:
ionic compounds eg sodium chloride
covalent compounds e.gmethane
1.
What are different ways that genetic technology is used?
Answer:
In medicine, genetic engineering has been used to mass-produce insulin, human growth hormones, follistim, human albumin, monoclonal antibodies, antihemophilic factors, vaccines, and many other drugs. In research, organisms are genetically engineered to discover the functions of certain genes.
Explanation:
HELP ASAP PLEASE! PLEASE
FIll in the blank
your answer will be Carbon
I just got help from a friend!
Choose all that apply below to DNA:
Question 1 options:
contains guanine
contains thymine
contains uracil
contains cytosine
takes the original code out of the nucleus and translate it into proteins
contains adenine
Different kinds of light are all around us everyday, but we are invisible to it. Explain the type of light that is visible to humans and which types of light are not. Also explain why we can perceive some forms of light and not others.
Answer:
The human eye can only see white visible light and it contains all the colors of the rainbow, from red to violet.
Explanation:
But visable light comes in many "colors" such as radio, infrared, ultraviolet, X-ray, and gamma-ray that are invisible to the naked eye.The reason that the human eye can see the spectrum is because those specific wavelengths stimulate the retina in the human eye.
Which is not a property of gold
A)rare
B)tarnishes
C)malleable
D)corrosion resistant
Answer:
B) Tarnishes
Explanation:
Gold is rare, Gold is malleable, Gold is corrosion resistant
Hope this helps!
A substance has a volume of 20 mL and a density of 2.5 g/mL. What is its mass? (M=DxV)
Answer:
41
Explanation:
mate u literally just have to substitute the values into ur formula. u would then get 20 times 2.5 which is 41