What is the source of the full spectrum of UV radiation?

Answer:

They are not pure elements, instead they are compounds, hence why they are not found on the periodic table. (Periodic table only consists of pure elements)

Answer:

50,000,000 Hz

Explanation:

Rearrange the formula:

wave speed = frequency × wavelength → frequency = wave speed ÷ wavelength

wave speed = 300,000,000m/s

wavelength = 6m

Substitute in the values:

frequency = 300,000,000 ÷ 6

frequency = 50,000,000 Hz

Hope this helps!

Answer:

• Oxygen is an element

Answer:

We can call it an element.

AMSWER :

CHEMICAL FORMULA :

• WATER - H2O

• CARBONDIOXIDE - CO2

• SODIUM HYDROXIDE - NaOH

• SULPHURIC ACID - H2SO4

• SODIUM CHLORIDE - NaCI

• SODIUM BICARBONATE - NaCHO3

Answer: It will increase the rate of reaction

Explanation:

An increase in enzyme or substrate concentration will increase the rate of reaction.

An enzyme is a biological catalyst and is almost always a protein. It speeds up the rate of a specific chemical reaction in the cell.

Initially, an increase in substrate concentration leads to an increase in the rate of an enzyme-catalyzed reaction. As the enzyme molecules become saturated with substrate, this increase in reaction rate levels off.

The rate of an enzyme-catalyzed reaction increases with an increase in the concentration of an enzyme.

Hence, an increase in enzyme or substrate concentration will increase the rate of reaction.

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Answer:

H+ (hydrogen) ions

Explanation:

Answer:

H+ (hydrogen) ions

Explanation:

Answer:

liquid

gas

Explanation:

liquid has an indefinite shape

gas has an indefinite shape

Answer:

gas and liquid

Explanation:

gas and liquid flow around and take the shape of their containers because the molecules are more spread apart

Answer:

16

Explanation:

you can line up the fareinheit and celsius and see that the celsius is 16

Answer:

15 and 290 for the first question, if it drops 30 it will get to be 30 f, -0 c and 273 k

HAve a wonderful day!

Answer:

The term “alchemy” brings to mind a cauldron-full of images: witches hovering over a boiling brew, or maybe sorcerers in smoky labs or untidy libraries. Despite these connotations of the mythic and mystical, alchemical follow contend a crucial role within the evolution of contemporary science.

Historically, alchemy refers to each the investigation of nature and an early philosophical and religious discipline that combined chemistry with metal work. Alchemy additionally encompassed physics, medicine, astrology, mysticism, spiritualism, and art.

Alchemy was scientific however it absolutely was additionally a religious tradition. a number of its practitioners had selfless intentions. for example, if alchemists might learn the key of “purifying” base metals into gold, they could gain the flexibility to purify the human soul. At an equivalent time, alchemy has typically been seen as a get-rich-quick theme and plenty of alchemists as charlatans and pretenders. however several alchemists were really serious-minded practitioners whose work helped lay the groundwork for contemporary chemistry and medication.

Explanation:

Alchemy for short answer if needed.

Answer:

prevent hydroxide formation

Explanation:

The formula equation is more meaningful than a word equation because the word equation only defines what the reactants and products are, whereas the formula equation defines which and how much of each element is present in the chemicals and also give some indication as to their structure.

Answer:

The formula equation is more meaningful than a word equation because the word equation only defines what the reactants and products are, whereas the formula equation defines which and how much of each element is present in the chemicals and also give some indication as to their structure

Explanation:

The formula equation is more meaningful than a word equation because the word equation only defines what the reactants and products are, whereas the formula equation defines which and how much of each element is present in the chemicals and also give some indication as to their structure

Answer:

it dissolves or disintegrates

Explanation:

Refer to the attachment

Light waves are part of the electromagnetic spectrum. The frequency of light therefore is 1.5 * 10^15 Hz.

Light is an electromagnetic wave and we know that the speed of light is a constant which is 3 * 10^8 m/s.

Knowing this; v = λ * f

λ = wavelength

f= frequency of light

v = seed of light

f = v/λ

f =  3 * 10^8 m/s/2.0 x 10-7 m

f = 1.5 * 10^15 Hz

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Answer:

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Answer:

Breaking glass - chemical change

popsicle - physical

milk - chemical

bread - physical

roasting - chemical

egg - chemical

fireworks - chemical

mixing something with water - chemical

popcorn - chemical

colouring hair - physical

melting chocolate - physical

crumpled paper - physical

rusted nails - chemical

crushed can - physical

cooked egg - chemical

bending metal - physical

melting ice - physical

bleaching clothes - chemical

If u want to differentiate between chemcial and physical change u need to remember this-

physical change - no new substance is formed (Even for melting of ice it's still water) and it can be reversible, except for some cases like tearing of paper

chemical change - a new substance is formed

Answer:

pressure doubles

Explanation:

they are inversly preportional

Answer:

d. compound

Explanation:

compound and elements are pure substances

Answer:

2 Elevation of a mountain.

Explanation:

Contours make it possible to show the height and shape of mountains, the depths of the ocean bottom, and the steepness of slopes.

(Brainiest and Thanks all Appreciated)

Answer:

the bond that forms between carbon and oxygen to create carbon dioxide

A polar covalent bond

Answer:

b

Explanation:

Answer:

A solvent is simply a substance that can dissolve other molecules and compounds, which are known as solutes. ... Because of its polarity and ability to form hydrogen bonds, water makes an excellent solvent, meaning that it can dissolve many different kinds of molecules.

Explanation:

Explanation:

here is the answer attached

Answer:

I believe the answer is ;_; 8-14

Im sorry if im wrong

Answer: 8-14 is the right answer

Explanation:

Answer:

Explanation:

The potential energy of a body can be found by using the formula

PE = mgh

where

m is the mass

h is the height

g is the acceleration due to gravity which is 9.8 m/s²

From the question we have

PE = 3 × 9.8 × 12.5 = 367.5

We have the final answer as

Hope this helps you

Answer:

A

Explanation:

Malleability describes the property of a metal's ability to be distorted below compression. It is a physical property of metals by which they can be hammered, shaped and rolled into a very thin sheet without rupturing. A soda can's walls are very thin, and therefore express the malleability of aluminum.

Answer:

Liquid water is held together by hydrogen bonds. Oils and fats not have any polar part and so for them to dissolve in water they would have to break some of water s hydrogen bonds.Water will not do this so the oil is forced to stay separate from the water.

Oil are the lipid molecule do not Mix With Water Because of Polarity. Oil and water don’t mix as it  is made up of non-polar molecules while water molecules are polar.

Lipids are organic biomolecule made up of carbon, hydrogen and oxygen with some other elements like phosphorus and nitrogen may be present.

A fatty acid which is an organic acid having hydrogen and general formula R-COOH where R represents hydrogen or a group of carbon and hydrogen atoms, for example stearic, palmitic and oleic acids.

Glycerol is another component which is a thick sweetish liquid, soluble in water and  can react with a fatty acid. where one molecule of glycerol combines with three molecule is fatty acids by formation of a bond called ester, here ester is also known as triglyceride.

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Answer:

I remember doing this in 7th,

1. D

2. B or D, more leaning on B though

3. A

The sponge is unsaturated when it is taking in more water. It becomes saturated when it stops taking in water. It is supersaturated when water starts oozing out from the sponge.

A saturated solution contains just as much solute as it normally hold at a particular temperature. An unsaturated solution contains less solute than it can normally hold at a particular temperature. A supersaturated solution contains more solute than it can normally hold at a particular temperature.

We can use a sponge to model these three scenario as follows;

Water continues to enter into the sponge when it is unsaturated, this continues until the sponge becomes saturated with water and takes in no more water. When the sponge becomes supersaturated, water begins to ooze out from the sponge because it can no longer hold more water.

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Answer:

chemical stability is important to consider in the comprehensive assessment of pharmaceutical properties, activity, and selectivity during drug discovery.

Answer:

In general, molecules are stable because all their constituent atoms have sufficient "valence" electrons-that is, electrons that participate in chemical bonding. Such electrons reside in the outer, or valence, "shell," which must fill up with the appropriate number of electrons for the bound atoms to be come stable.

Explanation: