Answer:
The experimenter observed this experiment in a lab rather than natural world because it might be dangerous to the atmosphere if he does the experiment in the natural world and it was still an hypothesis so that's why he did it in the lab.
when we don't use prefixe ina binary compound
Answer:
Explanation:
Answer will be wrong
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.
Explain how energy can be absorbed in a chemical reaction
Answer:
Energy is used to break bonds in reactants, and energy is released when new bonds form in products. ... In other chemical reactions, it takes more energy to break bonds in reactants than is released when bonds form in products. These reactions, called endothermic reactions, absorb energy.
Explanation:
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
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 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.
Give me a testable or researchable question to collect data about
Answer: What are black holes and how do they work?
Explanation:
How many dots would be drawn for the Lewis Dot Structure of gallium?
Answer:
To draw a Lewis dot structure for an atom, you must know how many valence electrons an atom possesses. The periodic table organizes the elements based on the similarity of their chemical properties.
Explanation:
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.
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:
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.
If 700 g of water at 90 °C loses 27 kJ of heat, what is its final temperature?
Answer:
If 700 g of water at 90 °C loses 27 kJ of heat, its final temperature is 106.125 °C
Explanation:
Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.
In this way, between heat and temperature there is a direct proportional relationship (Two magnitudes are directly proportional when there is a constant so that when one of the magnitudes increases, the other also increases; and the same happens when either of the two decreases .). The constant of proportionality depends on the substance that constitutes the body and its mass, and is the product of the specific heat and the mass of the body. So, the equation that allows to calculate heat exchanges is:
Q = c * m * ΔT
Where Q is the heat exchanged by a body of mass m, constituted by a substance of specific heat c and where ΔT is the variation in temperature, ΔT= Tfinal - Tinitial
In this case:
Q= 27 kJ= 27,000 J (being 1 kJ=1,000 J)[tex]c=4.186 \frac{J}{g* C}[/tex]m=700 gΔT= Tfinal - Tinitial= Tfinal - 90 °CReplacing:
[tex]27,000 J=4.186 \frac{J}{g* C}*400 g* (Tfinal - 90C)\\[/tex]
Solving:
[tex]27,000 J=1,674.4 \frac{J}{C}* (Tfinal - 90C)[/tex]
[tex]\frac{27,000 J}{1,674.4 \frac{J}{C}} =(Tfinal - 90C)[/tex]
16.125 °C= Tfinal - 90 °C
Tfinal= 16.125 °C + 90 °C
Tfinal= 106.125 °C
If 700 g of water at 90 °C loses 27 kJ of heat, its final temperature is 106.125 °C
HELP ASAP
When a carbon atom joins chemically with an oxygen atom, it makes carbon monoxide. What is the term for carbon monoxide? O A. A mixture B. An element O C. An alloy D. A molecule
D- A molecule
Explanation:
(Apex)
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:
What is one ecosystem you can think of? What non-living and living things are found in your ecosystem?
Chemical formula for CrO
Answer:
Chromium oxide
Explanation:
gravity and magnetism are examples of what?
Answer:
hyposthesis
Explanation:
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.
For more information about speed, refer to the link:
https://brainly.com/question/7359669
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
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.
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?
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.
To learn more about Solar System click:
https://brainly.com/question/12075871
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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!
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:
What is true about a pseudoscientific idea?
A) it can be replicated and verified.
B) It is improved with new information.
C) It ignores parts of the method within an investigation.
D) It tries to explain natural phenomena by analyzing, observing, and testing.
Answer: C
Explanation:
Which of the following groups is not reactive? Circle all that apply.
a. Alkali metals
b. Alkaline earth metals
C. Halogens
d. Noble gases
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.
What state of matter is water at 80 degrees celsius?
Answer:
Liquid
Explanation:
Because water becomes a solid (freezes) at 0°C and becomes a gas (evaporates) at 100°C, it is liquid at any temperature in between.
Another question please help!!! :)
The answer is [Boron]
I had this answer on my Chemistry test!