Answer:
A. two or more substances combinedExplanation:
As,
Mixture defines two or more substances that are physically combined with each other and are formed as solutions, suspension, and colloids
N is a number between_____ and______
Answer:
m and o
Explanation:
n is the number between m and o
True or false?
1. Cells carry on the processes that keep organism live?
True or false?
2. The digestive system is in the levels of organization under organ?
what was the order
of the first periodic table based
on?
Answer:
British chemist John Newlands was the first to arrange the elements into a periodic table with increasing order of atomic masses. He found that every eight elements had similar properties and called this the law of octaves. He arranged the elements in eight groups but left no gaps for undiscovered elements.
which of the following pieces of chemical lab equipment would we use to heat up a crucible or evaporating dish to a very high temperature
Answer:Bunser buner
Explanation: It is meant to heat solid and liquid substance in the lab.
Create a new name for Jupiter then explain its meaning.
Answer:
rudo
Explanation:
rudo means In the Shona language of souther Africa, this simple and wearable boys' name means love.
If the density of diamond is 3.5 g/mL, what would the density of a diamond be whose volume is 0.5 mL.
Answer: 3.5 g/ml
Explanation: The density does not change based on different volumes. The mass changes, the density is still the same, from 0.5 ml to 2500 liters. And below and beyond. But if you give me the 2500 liter diamond, I'll do the measurement myself.
What is the volume of a substance that has a density of 13.6 g/cm and a mass of 3.0 g?
Answer:
[tex]\boxed {\boxed {\sf v \approx 0.22 \ cm^3}}[/tex]
Explanation:
We are asked to find the volume of a substance.
We are given the density and the mass. The density of a substance is its mass per unit volume. The formula for calculating density is:
[tex]\rho= \frac{m}{v}[/tex]
We know the density of the substance is 13.6 grams per cubic centimeter and the mass is 3.0 grams.
ρ= 13.6 g/cm³m= 3.0 gSubstitute these values into the formula.
[tex]13.6 \ g/cm^3= \frac{3.0 \ g }{v}[/tex]
We are solving for the volume, so we must isolate the variable v. First, cross multiply. Multiply the first numerator by the second denominator, then multiply the first denominator by the second numerator.
[tex]\frac{13.6 \ g/cm^3}{1}= \frac{3.0 \ g }{v}[/tex]
[tex]13.6 \ g/cm^3 *v =3.0 \ g *1[/tex]
Multiply on the right side of the equation.
[tex]13.6 \ g/cm^3 *v =3.0 \ g[/tex]
The variable is being multiplied by 13.6 grams per cubic centimeters. The inverse operation of multiplication is division, so we divide both sides of the equation by 13.6 g/cm².
[tex]\frac {13.6 \ g/cm^3 *v}{13.6 \ g/cm^3} =\frac{3.0 \ g }{13.6 \ g/cm^3}[/tex]
[tex]v =\frac{3.0 \ g }{13.6 \ g/cm^3}[/tex]
The units of grams cancel.
[tex]v =\frac{3.0 }{13.6 \ cm^3}[/tex]
[tex]v= 0.2205882353 \ cm^3[/tex]
The original measurement of density has 3 significant figures and the measurement of mass has 2. Our answer must have the least number of sig figs, which is 2. For the number we found, that is the hundredth place. The 0 in the thousandth place tells us to leave the 2 in the hundredth place.
[tex]v \approx 0.22 \ cm^3[/tex]
The volume of the substance is approximately 0.22 cubic centimeters.
Does anyone have answers of a worksheet called “ Intro to Graphs” Chemquest 2?
Answer:
no
Explanation:
Because I have lost and I dont know where is the worksheet
If electromagnetic radiation has a frequency of 2.0 x 10^15 s^-1 what is the radiation’s energy?
Answer:
1.3 x 10^-15J
Explanation:
Metalloids are malleable, but are not ductile.
O True
OFalse
Answer:
False
Explanation:
Metalloids are brittle when compared to metals. Most metalloids are neither malleable nor ductile.
Hope this helps.
10 To become positively charged, an atom must: A Galn a proton B Lose a proton C С. Galn an electron D Lose an electron }
Answer:
D: lose an electron
Explanation:
when an atom loses an electron it's positively charged and when it gain an electron it is negatively charged
Critical Th
Use this phof
following qu
Lesson Beviel
Vocabulary
Circle the term that best completes each of the
following sentences.
1 A(n) hypothesis/observation is tested in
an experiment.
94+ yell.52
2 In an experiment, the independent/dependent
variable is the one that scientists manipulate
on purpose.
Answer:
1) hypothesis
2. independent .
hypothesis is a guess that is tested by an experiment
independent variable is manipulated by the experimenter
a liquid that occupies a volume of 0.820 L and has a mass of 2.56 kg
what is the density of this liquid in kg/L
Answer:
3121.95 kilogram/cubic meter
Explanation:
I used an online calculator
Hope I helped!
Is it permissible to taste substances in the lab?
What is an addition reaction of alkenes ?
[tex]\huge\pink{\boxed{\tt{\colorbox{pink}{ANSWER}}}}[/tex]
Chemical transformation of a carbon-carbon double bond is the addition reaction.
Explanation:
Consequently, if the bond energies of the product molecules are greater than the bond energies of the reactants, the reaction will be exothermic.
hope it helps
_______ is an example for isotone. a)argon and carbon b) uranium and carbon c) carbon and boron d)sulphur and boron.
Isotones are nuclides that have the same neutron number but a different proton number. Therefore the answer is C. boron and carbon.
Answer:
c) carbon and boron
Explanation:
They have the same number of neutrons but different number of protons.
They both contain 7 neutrons
state three properties of light
Answer:
The primary properties of visible light are intensity, propagation-direction, frequency or wavelength spectrum and polarization.
Explanation:
please please helpppp
Answer: I think its hydrogen, good luck
Explanation:
Answer:
Last diagram
Explanation:
Here, only individual atoms of argon are there in this gas
difference between medicinal and bio chemistrsy
Answer:
Biochemistry focuses on the studies of biological matter. ... Medical biochemistry seeks to advance the understanding of chemical structures and processes that constitute health and disease, and underlie transformations between these two states.
Which has the strongest intermolecular forces?
A B C or D
Answer:
A
Explanation:
do all types of energy have the same amount of energy
Answer:
Light is one type of radiant energy. Sunshine is radiant energy, which provides the fuel and warmth that make life on earth possible. Thermal energy, or heat, is the energy that comes from the movement of atoms and molecules in a substance. Heat increases when these particles move faster. Geothermal energy is the thermal energy in the earth.
Explanation:
Answer:No, for example electricity doesn't work like physical energy
Explanation:
If I have 2.4g of magnesium, how many g of oxygen(O2 ) will I need to react completely with the magnesium? 2Mg +O2 → MgO
Explanation:
just trying....hope that helps
1.6 grams of oxygen will react with 2.4 grams of magnesium.
Explanation:
Given:
2.4 grams of magnesium.
The reaction between magnesium and oxygen:
[tex]2Mg+O_2\rightarrow 2MgO[/tex]
To find:
The mass of oxygen required to react with 2.4 grams of magnesium.
Solution:
The mass of magnesium = 2.4 g
Moles of magnesium =[tex]\frac{2.4 g}{24.305 g/mol}=0.0987 mol[/tex]
[tex]2Mg+O_2\rightarrow 2MgO[/tex]
According to the reaction, 2 moles of magnesium reacts with 1 mole of oxygen, then 0.0987 moles of magnesium will react with:
[tex]=\frac{1}{2}\times 0.0987 mol=0.04935\text{mol }O_2[/tex]
Moles of oxygen required = 0.04935 mol
The mass of 0.04935 moles of oxygen :
[tex]=0.04935\times 31.999 g/mol=1.579 g\approx 1.6 g[/tex]
1.6 grams of oxygen will react with 2.4 grams of magnesium.
Learn more about the unitary method and moles here:
brainly.com/question/2499283?referrer=searchResults
brainly.com/question/20703532
How does the formula of an element differ from that of a compound?
Answer: Most elements don't have formulas.
Explanation: They exist as single atoms, witn no bonds to another atom. A few element do exist as molecules, such as )2 and N2, but they are bonded to the same atom. There are no different elements.
What is the function of a cell in relation with the human body?
Answer:
Explanation:
They provide structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized functions. Cells also contain the body's hereditary material and can make copies of themselves. Cells have many parts, each with a different function.
what concepts did your model help explain well?how is the model limited?
There are three stable forms of neon: neon-20, neon-21, and neon-22. Which statement is true?
Answer:
three stable isotopes
Neon has three stable isotopes: 20Ne (90.48%), 21Ne (0.27%) and 22Ne (9.25%). Ne and 22Ne are partly primordial and partly nucleogenic (i.e. made by nuclear reactions of other nuclides with neutrons or other particles in the environment) and their variations in natural abundance are well understood.
The statement that is true is the charge of all isotopes are same. The correct option is D.
What are isotopes?Isotopes are members of an element family that have the same number of protons but differ in terms of neutrons.
The atomic number of an element on the Periodic Table is determined by the number of protons in its nucleus.
There are three isotopes of neon. Since there is no significant global production of these isotopes, the more plentiful 20Ne and 22Ne are essentially all primordial.
Isotopes can form naturally through radioactive decay of a nucleus or unnaturally by bombarding a stable nucleus with charged particles in a nuclear reactor using accelerators or neutrons.
Thus, the correct option is D as they all have same charge.
For more details regarding isotopes, visit:
https://brainly.com/question/11680817
#SPJ2
Your question seems incomplete, the missing options are:
- the atomic mass of the three isotopes is the same
-the three isotopes are all radioactive
-the three isotopes are equally abundant in nature
-the charge of all isotopes is the same
13 (01.05 HC)
In science class, the teacher, Mr. Jacobs, breaks a wooden board in half as a demonstration. Carol states that she believes this is an example of a physical change. Which of the following best explains If Carol's calm
is correct or incorrect? (1 point)
This is correct because each plece of wood has the same composition
This is correct because the wood has changed its composition
This is incorrect because each plece of wood has the same composition
This is incorrect because the wood has changed its composition.
This is correct because each piece of wood has the same composition.
Hope it helps! Please do comment
12,341 nanoseconds is how many seconds?
Answer:
1.2341e-5 seconds i.dk how to convert it from scientific notation lol
Explanation:
- Zombie
When sugar is heated on a hot plate, it turns into a liquid. When the liquid sugar is
cooled, a hard-crystalline substance is formed. This model BEST demonstrates the
formation of
photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy.
What is the function of a vacuole?
A) Thick solution that fits all cells
B) Stores food, water, and waster
C) transports proteins
D) helps with cell division
Answer:
B stores food, water and waster
