Answer:
A) Cu
(copper)
I need help please, I will give you five stars
Answer:
The second choice i think
Explanation:
Hope it helps
a cheetah can run 112km/h over a 100-m distance. what is this speed in meters per second
How do solve the uncertainly of a number?? plz help me
Answer:
How do solve the uncertainly of a number??
Explanation:
If you're adding or subtracting quantities with uncertainties. You add the absolute uncertainties. If you're multiplying or dividing, you add the relative uncertainties. If you're multiplying you multiply absolute uncertainties by the same factor, or do nothing to relative uncertainties.
Answer:
If you are taking a with power of a number with an certaintly ,you multiply the realtive uncertainty by number in the power .
describe how changing the particles changed the atom
Changing the particles changes the atoms by converting it to a new substance through bond change.
During a chemical reaction changes occurs in the atoms of an element due to the formation or breaking of bonds.
There is either loss or gain or sharing of atoms between two elements reacting together.
Bonds between atoms break and new ones form and energy is either given out or taken in.
This type of reaction leads to the formation of new substances made up of a new combination of atoms and a different configuration of electrons.
Therefore, because various changes occurs during a chemical reaction, changing the particles changes the atoms by converting it to a new substance through bond change.
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What is the difference between the dependent variable and the independent variable in an experiment?
An independent variable is the cause. Its value is independent of other variables in your study. A dependent variable is the effect. Its value depends on changes in the independent variable
Explanation:Variables are the factors or the numbers used as a quantity. The dependent variables are conditional, and the independent variable is the cause that affects the result.
What are dependent variables and independent variables?The independent variable of an experiment is the data that is the cause of the experimental design. Its value and result do not depend on other factors and conditions. These values are manipulative and are set by the researcher.
The dependent variables, on the other hand, vary based on the other factors and variables and are the effect that is based on the response and the outcome of the other variables. It is the tested or the measured value.
Therefore, the independent and dependent variables differ based on cause and effect.
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The teacher was not in the room yet. Randy began opening containers of chemicals, touching them with his hands. His cheek itches so he rubbed it. Explain how Randy was not acting safety in the the laboratory.
I know the answer I just don’t know how to word it. Please help. Due by 11:59 tonight
Answer:
Randy went into the classroom without the teacher being present. He opened containers of chemicals without the teacher's consent. Randy is making contact with the chemicals on his skin.
I hope this helps! I haven't done lab science in a while so I'm trying to remember the safety precautions.
Randy went into the classroom without the teacher being present and opened containers of chemical, making contact with chemicals on skin leads to skin reaction.
So Randy should follow the lab safety rules while entering into lab.
What are the important lab safety rules?After entering lab wear apron and gloves along with safety goggles if working with any hazardous or infectious substance.
Fully aware about the hazards of the materials, properly trained to handle lab equipment, chemicals should be adequately labelled.
Taste or smell chemicals are prohibited, never pour already stored chemicals, chemical hygiene plan should be developed for specific hazards.
Avoid to adopt un-tested and unauthorized experimentation, Clean up all chemical spill, Laboratory induction should be carried out .
Avoid storage of any edible items in the refrigerator along with lab chemicals and specimens, clean the work station after completing experiment and sterilization should be done before starting experiment.
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Hail is an example of which type of phase change?
A) Sublimation
B) Evaporation
C) Condensation
D) Freezing
Answer:
D) freezing
Explanation:Because hail sounds like it is hard and hail comes down and it hurts because it is freezing.
The hail can be defined as the conversion of the water to the ice. Thus, hail is an example of freezing.
What is phase change?The phase can be defined as the state of the matter. With the change in the temperature and the pressure values, the state of the matter, or the phase changes.
The hail has been the solid precipitation of the rain water. With the lowering of the temperature to the critical pressure, the water converts to ice.
The conversion of water to ice has been termed as freezing, Thus, hail is an example of freezing. Hence, option D is correct.
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What is the electron configuration for an atom of tin in the ground state?
Answer:
The ground state electron configuration of ground state gaseous neutral tin is [Kr]. 4d10. 5s2. 5p2 and the term symbol is 3P0.
If one end of an iron bar is heated, what causes thermal energy to transfer to the other end? a radiation b conduction c heat of fusion d convection
Answer:
Option B:
Conduction
Explanation:
Conduction is the transfer of heat from one molecule to another between two solids that are in direct contact with each other. For the conduction of heat to occur, the medium involved must be solid. This is because the molecules of solids are closely packed together and they cannot freely move about. The heat flowing through them can easily be passed on from one molecule to the other until it reaches all the parts of the object. This is exactly what will happen to the iron bar. Thermal energy from one end of the bar will get transferred between the molecules of the iron bar until it reaches the other end.
Convection on the other hand involves the transfer of heat through a liquid medium.
Radiation involves teh transfer of heat in a vacuum.
Answer:
b) conduction
Explanation:
A kilometer is much greater in distance then a millimeter true or false
Answer:
true
Explanation:
Answer:
true
because if you look at a chart it will lable
kilometercentimetermillimeterand so onWhen exposed to very high temperatures, metals like iron can be turned into fluids that flow and can be poured into molds. What happens within the iron to allow it to flow?
Answer: the particle vibrate
!
Explain why the design of the bird's nest in the picture provides good insulation for the eggs.
Answer:
First, the lining may consist of loose, smaller bits of the same materials that have been incorporated into the latticework of the nest. These finer materials are utilized to shed water, deter pests, conceal the eggs from predators, insulate, and cushion them. ... They also serve to insulate and cushion the eggs.
Explanation:
Which are different forms of an element that have different numbers of neutrons?
O ions
O isotopes
O compounds
O molecules
I need help pleaseeee
Convert 35 mL to cm3. 1 mL = 1 cm3
how to calculate molecular mass?
how many grams are equal to 413 kg
Answer:
413,000 grams
Explanation:
Answer:
413,000
Explanation: That's because 1 kg equals to 1,000 grams.
Will give Brainlest for correct answers
How is kinetic energy affected by temperature
Answer:
Temperature affects the kinetic energy in a gas the most, followed by a comparable liquid, and then a comparable solid. The higher the temperature, the higher the average kinetic energy, but the magnitude of this difference depends on the amount of motion intrinsically present within these phases
Explanation:
I just know lol
Igneous rock can be changed into which type of rock through the application of heat and pressure?
A. metamorphic rock
B. foliated igneous rock
C. clastic sedimentary rock
D.non-foliated igneous rock
(Pls help me)
Answer:
A) metamorphic rock
Explanation:
Granite is an igneous rock that forms when magma cools slowly underground. When granite is exposed to heat and pressure it changes into a metamorphic rock called gneiss
If the weather map above is from today’s forecast, which city is most likely to see its temperatures rise tomorrow?
Chicago
Houston
Denver
Memphis
Answer:
The awnser is chicahgo
Explanation:
Thermal radiation emitted by objects allows us to feel infrared
energy as _____
Answer:
THERMAL IMAGING
We can sense some infrared energy as heat. Some objects are so hot they also emit visible light—such as a fire does. Other objects, such as humans, are not as hot and only emit only infrared waves.
a 1 mL pipette delivers a measured volume of .98 mL (calculate the percentage error)
Answer:
2%
Explanation:
.98 is 98% of one and therefore they are missing 2%
Answer:
2%
Explanation:
The answer is 2%.
100-98 is 2.
(01.01 MC)
Which of the following could be considered a scientific statement
Answer:
hmmmm not sure and don't know
Explanation:
any matter that does not have a definite shape or a definite volume is an
how can an item with a lower mass have a higher weight than an item with a higher mass?
Answer:
probs has to do with the size of the object
Explanation:
How are compound, elements, and mixure different
Explanation:
Compound: a substance that is made up of more than 1 type of atom bonded together Example: H2O
Mixture: combination of two or more elements or compounds not chemicaly bonded together. example: Sugar and salt in one container
elements pure substance of an atom. Example: hydrogen
Living sustainably means living on ____—the renewable resources such as plants, animals, soil, clean air, and clean water provided by Earth's natural capital. A. Exponential growth natural income ecosystem services factors of sustainability biodiversity
Answer:
natural income
Explanation:
Living sustainably in the 21st century means coexisting with the nature. In other words, to live sustainably means to meet the needs of the human without affecting or degrading the mother nature.
In the context, living sustainably means to live from the natural income from the nature's gift to us, using their natural resources and not hurting them or exploiting them. They may be resources from the soil, plants, clean air, animals, nature's clean water,etc.
In what circumstance would the complete and net ionic equations for a reaction be identical?
Answer: Complete ionic equations dissociate all aqueous solutions into ions. Net ionic equations show the change that occurs in chemical reactions and do not show spectator ions that are the same in reactants and products. (b) If no spectator ions were present then complete and net ionic equations would be identical.
Explanation:
URGENT : how do the electrostatic forces between electrons influence their orbital spin?
1)petroleum and natural gas are formed in the__________
2)_______ refers to the things that exists freely in nature or human use
3) during the ____ period the earth was covered with swampy forest's
4)-------- is the mixture of hydrogen, methane, carbon monoxide, and other gases
5)natural gas mainly consists of_____
6)_____are the chemicals derived from petroleum and natural gas
7) the process of refining of petroleum is carried out in refineries and is called _____
8) _____ is used to generate power and to manufacture other fuels like coke and coal tar
How many electrons does maganese 55 have?
Answer:
Maganese 55 has 25 electrons.
Hope this helps you!
Explanation: