Answer:
Reactants:
NH3
Names: Ammonia : Azane (only intended for use in naming derivatives of ammonia) Hydrogen nitride
Appearance: Colourless gas , accessed: 2019-09-27; Colourless gas or compressed liquefied gas with pungent odour ; Colorless gas with a pungent, suffocating odor. [Note: Shipped as a liquefied compressed gas. Easily liquefied under pressure.]
H2SO4 – Sulfuric acid
Other names: Oil of vitriol: NIOSH NPG, , Sulfuric acid, concentrated (> 51% and < 100%)
Appearance: Clear, colorless liquid source: wikipedia, accessed: 2019-09-27; Odourless colourless oily hygroscopic liquid source: ICSC, accessed: 2019-09-04; Colorless to dark-brown, oily, odorless liquid. [Note: Pure compound is a solid below 51°F. Often used in an aqueous solution.] source: NIOSH NPG, accessed: 2019-09-02
Products:
(NH4)2SO4 – Ammonium tetraoxosulfate (VI) ,
Other names: Ammonium sulphate source: wikipedia Ammonium sulfate source: Ammonium sulfate (2:1)
Appearance: Fine white hygroscopic granules or crystals.
What kinds of anthropogenic activities produce acid rain?
Answer:
Rotting vegetation and erupting volcanoes release some chemicals that can cause acid rain, but most acid rain is a product of human activities. The biggest sources are coal-burning power plants, factories, and automobiles.
Answer:
coal and oil power plants and automobiles
Explanation:
HELP! A bone contains 6.25% of Carbon -14 it began with. How old is the bone ?
Answer:
6.25 yrs
Explanation:
Which of the following is a metal?
A. nitrogen
B. calcium
C. sulfur
D. carbon
Answer: Calcium
Explanation: The chemical element Calcium (Ca), atomic number 20, is the fifth element and the third most abundant metal in the earth's crust. The metal is trimorphic, harder than sodium, but softer than aluminium.
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A tool might be made of an alloy because the alloy _____.
A. occurs naturally
B. resists rust
C. can bend easily
D. is softer
Your answer is:
B. Resists rust.
A tool might be made of an alloy because the alloy resists rust.
Why?
Iron is a great building material but steel (an alloy made by adding small amounts of non-metallic carbon to iron) is stronger, harder, and rustproof. Aluminum is a very light metal but it's also very soft in its pure form.
Alloy steels have a wide range of special properties, such as hardness, toughness, corrosion resistance, magnetizability, and ductility. Nonferrous alloys, mainly copper–nickel, bronze, and aluminum alloys, are much used in the coinage.
____________________________________________________________
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Which process is an example of a physical change?
a. wood burning in a camp fire
b. iron rusting on a bicycle chain
c. ice melting after a snow storm
d. milk souring because it is old
Answer:
c or d
Explanation:
i dont know which one but it's one of those
Ten of the sixteen nonmetals are _____ at room temperature.
A. solids
B. gases
C. alloys
D. liquids
Please help!
Geologists determine the hardness of a mineral using the Mohs scale of hardness. Why is it important for geologists to be able to do these tests in the field?
Answer:
To help determine what type of rock it is
Explanation:
Geologists can use information such as color, hardness, grain size, texture and other aspects of the rock to figure out the classification of a rock. for example, a light blue rock with no visible grain that is translucent and has a hardness of 9 is most likely going to be a saphire. hope this helps!!!!
What happens to the solar energy absorbed by plants during photosynthesis?
A-It is recycled by plants and returned to the atmosphere.
B-It is converted into oxygen and glucose.
C-It is stored as heat within the plant for cellular functions.
D-It is transformed into chemical energy.
Answer:
b- It is converted into oxygen and glucose.
Explanation:
Max is helping his parents move to a new house. He picks up one box and is able to carry it into the house. He tries to pick up a second box with an identical volume, but he is unable to lift it. What is most likely the difference between the two boxes?
Answer:
The Weight
Explanation:
Even know it has the same volume does not mean it has the same mass and weighs the same with the items inside the box. Most likely, that the Items inside the box are heavier then the first box Max moved.
Max is helping his parents move to a new house. He picks up one box and is able to carry it into the house. He tries to pick up a second box with an identical volume, but he is unable to lift it. The difference between the two boxes is weight.
What is, an identical volume ?Similar items have the identical volume. In other words, two items have the same volume if all of their measures completely match. An object's volume remains unchanged when it is rotated or reflected.
According to Avogadro's law, all gases with an identical volume and the same temperature and pressure have an equal number of molecules. If the temperature and pressure are constant, the volume and amount (in moles) of an ideal gas for a given mass are directly proportional.
The relationship between mass and volume can be easily determined using density; for example, the mass of a body is equal to its volume multiplied by the density (M = Vd), whereas the volume is equal to the mass divided by the density (V = M/d).
Thus, He tries to pick up a second box with an identical volume, but he is unable to lift it. The difference between the two boxes is weight.
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What periodic element is from france
Answer:
Francium
Explanation:
I really don't know how to explain this
Which metals are so reactive that they are never found as uncombined elements in nature?
A. alkaline earth metals
B. alkali metals
C. rare earth metals
D. transition metals
Which of the following pH values represents a strong acid?
1
8
13
7
Answer:
1
Explanation:
acid is 0-3 lower numbers
The is the part of the electrical circuit along which electricity travels.
_________ ________________ is a circular path of electric current, from the source of energy and back.
The flow of electric charge through a path is called an
A form of energy is _________________.
The ___________ uses electricity from the source.
Please help for brainlest
Answer:
The conductor runs a circular path from the power source, through the resistor, and back to the power source. The power source moves the existing electrons in the conductor around the circuit. This is called a current. Electrons move through a wire from the negative end to the positive end.
Explanation:
this help?
Which is not true of the element nitrogen?
A. There is more nitrogen gas in the air than oxygen.
B. Nitrogen atoms form diatomic molecules.
C. Nitrogen in the air is highly reactive.
D. Nitrogen is used as a fertilizer for soil.
Which of these can be combined to make a mixture?
a. solid and a liquid
b. two solids
c. two liquids
Answer:
c
Explanation:
you cant mix a rock and a rock together and expect to get a mixture
and you cant mix a rock and water and expect them to mix
so its on logical that it is two liquids
Plz help!
How does the path of a river change over time? (describe the process)
Answer:
All rivers naturally change their path over time, but this one forms meanders
Explanation:
When you stand next to a river, its path doesn't seem to move.
All rivers naturally change their path over time, but this one forms meanders at an especially fast rate, due to the speed of the water, the amount of sediment in it, and the surrounding landscape.
please help i dont understand this
In which ocean zone does a reef most likely thrive?
HEELLPP PLEASE IM BEGGING ILL GIVE BRAINLIEST
Vegetable soup is an example of _____________:
A. an element
B. a compound
C. a mixture
D. a chemical reaction
Answer:
C
Explanation:
You mix different thing together to make a new thing.
]Why is permeable soil best for plants that need a lot of drainage?
Water fills this type of soil.
Water dries up in this type of soil.
Water flows through this type of soil.
Water pools on top of this type of soil.
DOES ANYONE ELS FIN SNUFFLEUPAGUS CREEPY CAUSE I DO.....
Answer:
BROO.... YESSS
Explanation:
Answer:
Yes
Explanation:
They just creep me out
What is density?
1. a measure of salinity
2. the weight of water
3. the amount per unit volume of a particular material
4. the amount of salt in water
explain why the sun appers to be the brightest star in the sky. relate your explanation with an example such as street lights. this is science
Answer:
The sun is a star but It is the brightest in the sky because it is the closest star to earth.
I don't know how to compare it to street lights though...
Explanation:
Why do you think it’s useful for scientists to classify matter? In other words, why do you think scientists need to identify something as a pure substance? Why do you think they need to know if something is a compound or an element?
Answer:
They need to know
Explanation:
Because if we didn't know that something was a compound of an element we could either blow ourselves up when we are mixing them or when we are looking for something bad between the compound and we don't know its a compound how do we fix it
Classifying substances as elements or compounds helps us to understand their properties.
Matter is anything that has mass and occupy space. There are several substances in the universe and all of them are composed of matter. It is necessary to classify matter for reference purposes. When we classify matter then it is possible to refer to substances under specific classes.
A pure substance contains only one kind of matter. It is necessary to classify something as a pure substance so that it is we can know if it contains one type of matter or different types of matter.
It is necessary for scientists to classify something as element or compound in order to understand its properties. Elements and compounds are pure substances.
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What element glows in sign's when excited
Answer:
The element that glows in signs is xenon.
Explanation:
Xenon is a chemical element with the symbol Xe and atomic number 54. It is a colorless, dense, odorless noble gas found in Earth's atmosphere in trace amounts. Xenon is used in flash lamps, arc lamps, and as a general anesthetic. Xenon emits a blue or lavenderish glow when excited by electrical discharge, it emits a band of emission lines that span the visual spectrum, but the most intense lines occur in the region of blue light, producing the coloration.
Hurry HELP 20 pts 5 ⭐ and a THANKS
Scenario:Fossils show that many species, or kinds of organisms, have died out or become extinct because they could not respond to the pressures fast enough to survive. Those that did survive were better suited to their environment. Evidence shows that new species develop from old species as a result of gradual change. Natural selection is one process by which organisms change over time. Evidence shows that species change over time, sometimes giving rise to new species.External DataPrompt:Look at the pictures above that show how the giraffe got such a long neck. Write a scientific explanation of how natural selection applies to this process.
Claim:____________________________________________
Evidence:______________________________________________
Reasoning:_______________________________________________
Rebuttal:_____________________________________________________
Answer:
The claim would be that evident show species over time
evidence is a look at the picture above show how the graffiti got such a long neck
reasoning how fast you're so that many kind of specimens
Richard boodle those that did survive were better suited
can anyone help me with the question?? “Is the ending substance the same substance as the colorless liquid and why”
Answer:
It's Gas.
Explanation:
The density of Mg is 1.74g/cm3. The density of strontium is 2.60g/cm3. What would you expect the density of Ca to be?
Answer:
1.61 g/cm³.
Explanation:
PLEASE HELP MEEEE THIS IS ABOUT BODY SYSTEMS
The most common way humans contribute to the extinction of organisms is by
rotation of crops.
use of fertilizers.
destruction of habitat.
introduction of competing species.
The most common way humans contribute to the extinction of organisms is by destroying their habitats. By destroying the natural habitats of organism we are leading them to point where they cant survive.
What is extinction ?Extinction of an organism is the gradual disappearance of the entire species of that organism due to natural calamities, human activities or, spreading diseases.
Human activities are the main culprits of the devastation of organisms and their habitats. Humans destroy the natural habitats of plants and animals for their selfish purposes.
Animals then starve and they are not fit to survive in other places which are entirely different from their natural habitat. Therefore, if these activities continues they will extinct.
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