Answer:
The most important elements that we use in everyday life include carbon, hydrogen, oxygen, with smaller amounts of things like chlorine, sulfur, calcium, iron, phosphorus,nitrogen, sodium, and potassium. Apart from these, other elements include magnesium, zinc, neon, and helium are also in our daily existence.
all these element are my favourite element .......
which picture shows the particles in a mixture?
picture II
picture I
picture I and II
picture III and IV
Correct option : picture III and IV
The pictures lll and lV are depicting mixtures cuz they contain different kinds of atoms and molecules .
Picture III and IV shows the particles in the mixture. The correct option is D.
Thus, A mixture is a combination of two or more components that can be physically separated and are not chemically linked together.
Each component in a combination can exist in a variety of ratios while still maintaining its own characteristics. Mixtures fall into one of two categories: Homogenous and Heterogenous.
Homogeneous Mixtures: These mixtures, sometimes referred to as solutions, have a consistent composition throughout and make it challenging to identify the different components.
Thus, Picture III and IV shows the particles in the mixture. The correct option is D.
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7. What is ultraviolet radiation?
Answer:
Ultraviolet radiation is a form of electromagnetic radiation that comes from the sun.
Metric Conversion: Which units are equivalent (the same) as 75g? (Pick 3)
(1 Point)
7500 mg
750 dg
7.5 dag
.075 Kg
The unit that is equivalent to 75g is 0.075 kg, 750 dg, and 7.5 dag. The correct options are b, c, and d.
What are measuring units?Measuring units are the units used to denote the measurement quantities. There are seven basic measuring units. They are length, Time, Amount of substance, Electric current, Temperature, Luminous intensity, and Mass.
The current unit is given grams, which are used to measure the mass of any object.
1000 grams is equal to 1 kilogram and 1 dg = 0.1 g, and 1 dag = 10 g. So by this formula, each of the quantities can be calculated.
1 kg = 1000 g
So, 0.075 kg = (0.075 × 1000)g = 75 g
1 dg = 0.1 g
So, 750 dg = (750 × 0.1) g = 75 g
1 dag = 10 g
So, 7.5 dag = (7.5 × 10) g = 75 g
Thus, the correct options are b. 750 dg, c. 7.5 dag, and d. .075 Kg.
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Three students use a meterstick with millimeter markings to measure a length of wire. Their measurements are 3 cm, 3.3 cm, and 2.87 cm,
respectively. Explain which answer was recorded correctly.
Answer: 3 cm
Explanation:
Which of these can be mined from earth and used as an energy source?
A.Get rid of the waste and extra fluid
B.Ureters
C.Coal
D.Bladder
coal
Which of these can be mined from earth and used as an energy source?
A.Get rid of the waste and extra fluid
B.Ureters
C.Coal
D.Bladder
ans is coal
and compound is a substance made of two or more chemicals that are chemically joined in a specific combination most matter is formed of ____
Answer:
elements
Explanation:
possibly elements
Please help!!!!! I will give yall extra points
Answer:
A.
Explanation:
- Convert (a) 0.5722 L to mL (b) 540.0 m to cm?
Answer:
(a)572.2ml
(b)54000cm
Explanation:
(a) 1 l = 1000 ml
0.5722 l =?
=572.2 ml
(b) 1m = 100cm
540m=?
=54000cm
The various units like liter, meter, and kilogram are used to measure the objects and matter. 0.5722 L is equivalent to 572.2ml and 540.0 m is equivalent to 54000cm.
What are measuring units?Unit of measurements are magnitudes used to estimate the quantity of the matter and includes seven fundamental units, including meter, kilogram, seconds, candela, mole, kelvin, and ampere.
The fundamental units can be used to define other measurements that are called derived units, like volume, density, etc. The unit can be converted into various metric systems.
Unit conversions are done as:
1 L = 1000 mL0.5722 L = X mL
X = (0.5722 L × 1000 mL) ÷ 1 L
= 572.2 mL
1m = 100 cm540 m = X cm
X = (540 m × 100 cm) ÷ 1 m
= 54000cm
Therefore, 0.5722 L = 572.2 mL, and 540.0 m = 54000 cm.
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A hose delivers water to a swimming pool that measures 9.0 m long by 3.5 m wide by 1.75 m deep. It requires 97 h to fill the pool. At what rate in liters per minute will the hose fill the pool?
Answer:2
Explanation:
Calculate the force needed to accelerate a 300 kg mass at 5
mls acceleration.
Explanation:
Force=mass *acceleration
F=300*5
f
F=1500N
Tommy purchases a 2 liter bottle of
soda and pours it into cups that hold
500 ml each. How many cups does he
use if he pours out the entire bottle of
soda?
A: 4
B:40
C: 5
D: 50
Answer:
A. 4
Explanation:
We know that Tommy purchased a 2 liter bottle, in which pours 500ml of said bottle in cups, following asked of how many cups would he need before finishing the soda.
First off, 1 liter is 1,000 millileters, therefore that dividing a two liter bottle (2000ml) by 500ml will give us our answer :
2000/500
A. 4
A block of wood that is 3 cm on each side has a mass of 27 g. What is the density of the block? ( using sig figs )
Answer:
desity =mass /volume
27/ 3cube
1g/cm³
Calculate the maximum mass of iron that can be obtained from 240 tonnes of iron oxide
Answer:
167.86 tonnes
Explanation:.
I am assuming the iron oxide is Fe2O3 (Haematite) which is the most common form of iron oxide.
From the atomic masses:
Maximum Mass of iron = 240 * 2*55.845 / (2*55.845 + 3*15.999))
= 240 * 111.69 / (159.687)
= 167.86 tonnes
A rock has a volume of mban
mass of 60 grams. What is its density?
Answer: 60 g/mban
Explanation: I don't know what an "mban" is, but the density of this alien rock would be 60 grams/mban. Density = Mass/Volume
what is the relationship between temperature and kinetic energy
For a given gas
[tex]\boxed{\sf E\propto T}[/tex]
[tex]\\ \sf\longmapsto \dfrac{\epsilon_1}{\epsilon_2}=\dfrac{T_1}{T_2}[/tex]
E=energyT=TemperatureCorrect answer please, I need it before 12:07
Answer:
answer of first question is Chlorine
answer of second question is Group 14
PLEASE MARK ME BRAINLIESTwhat is the boiling point for water in degrees celsius?
Answer:
100°C is the boiling point of water in degrees Celsiuswhat provided evidence of the big band theroy
Answer:wo major scientific discoveries provide strong support for the Big Bang theory: • Hubble's discovery in the 1920s of a relationship between a galaxy's distance from Earth and its speed; and • the discovery in the 1960s of cosmic microwave background radiation.
Explanation:
(d) Calculate the relative molecular mass of ammonium sulphate (NH4)2SO4.5H2O
[A, O= 16.0; H= 1.0; C= 12.0; N= 14.0; S= 32.1]
Answer:
222.1
Explanation:
(14+4*1)*2+32.1+16*4+(2*1+16)*5=222.1
What is the compound that gives a white precipitate when treated with an aldehyde.
Answer:
Sodium hydrogen sulphite
Explanation:
The white precipitate formed is because of the sulphite ion and a carbonyl group formed
[tex].[/tex]
Give reasons ,Argon is an inert gas.
Answer:
The outermost (valence) shell of argon has eight electrons, making it exceedingly stable and, thus, chemically inert. Argon atoms do not combine with one another; nor have they been observed to combine chemically with atoms of any other element.So argon is an inert gas
Answer:
because argon have 8 electrons in there outmost shell
which is enough to make it stable
7.In which state of matter molecules have more energy to vibrate.
Answer:
Solid, liquid or gas. So there is movement no matter the state. The key variable is density. The higher the density the less movement. In solids the motion can be so small it's very hard to measure. Gas on the other hand is easy the motion being large. Bear in mind temperature plays a big role. Higher temps bring faster motion. Finally the pressure of the gas brings about less motion the higher it is as the molecules are closer together & can't move as much.
Explanation:
which term best describes the role of hydrogen gas in the formation of a water molecule
20,000 $ give a way but answer this first
Plz
12.Write the basis of naming of the following elements. 1.Neptunium,2.Mendelevium,
Answer:juhygjdkeExplanation:
Mendelevium is named for Dmitri Mendeleev who produced one of the first periodic tables.
Abelson first found neptunium in 1940 after uranium had been bombarded by neutrons from the cyclotron at Berkeley, California. ... The element was named after the planet Neptune, which is the first planet beyond Uranus.
Answer in explanation
Explanation:
neptunium was named after the discovery of the planet neptune in september 23 1846
mendelevium was named as dimitri mendeleev
FeSO4 + KMnO4 + H2SO4
Chemistry HW. 1) write the chemical formula for the following a) Magnesium chloride b) Calcium oxide c) Aluminum oxide 2) what is chemical equation? 3) write the formula of any ten compounds.
Answer:
a) MgCl2
b) CaO
c) Al2O3
2)A chemical equation is the symvolic representation of a chemical reactionary in the form of symbol and formulae, wherein the reactants entities are given on the left hand side and the product entities on the right hand side.
3) ammonia sulfate- NH4
carbonic acid- H2CO3
sodium bicarbonate- NaHCO3
sodium hydroxide- NaOH
nitric acid- HNO3
ethanol- C2H5OH
methane- CH4
sodium nitrate- NaNO3
aluminium oxide- Al2O3
citric acid- C6H8O7
I HOPE YOU WILL GIVE ME BRAINLIEST ❤️
How do you do conversion factors?
Answer:
Explanation:
A conversion factor is a number used to change one set of units to another, by multiplying or dividing. When a conversion is necessary, the appropriate conversion factor to an equal value must be used. For example, to convert inches to feet, the appropriate conversion value is 12 inches equal 1 foot. I am so sorry if i am wrong I am new at this
Answer: To create a conversion factor from this equality, write the quantity on one side of the equal sign in the numerator of a fraction, and write the other quantity in the denominator. Note that a second conversion factor could be developed by interchanging where each quantity is written, relative to the fraction bar.
Explanation:
To scientific notation 5.029m
Answer:
5.029 × 100
Explanation:
how long does the earth take to go round the sun
Answer:
Well if it is revolve then 365 days if it is rotation then 24hrs. Hope this helps
Answer:
It Takes A Whole 24 Hours
Explanation:
about 365 days
Earth is closer to the sun and revolves around it in about 365 days
A machine emits Xrays with a wavelength of 10nm. How much energy is in this type of radiation
