Answers
Related Questions
pleas answer this, it’s due tomorrow. I will give brainliest.
Answers
Answer:
just the second
Explanation:
Answer:
both are changes in state, and both conserve mass. Hope it helps and please have a good day or night
9
A substance fills a jar. A scientist transfers the substance to a 2
liter bottle. The substance fills the entire space of the 2 liter bottle.
What is the state of matter of the substance?
Answers
Answer:
Liquid
Explanation:
The substance had appears to have a fixed volume but took the shape of the bottle it was transferred to.
If the substance doesn't have the same volume, the answer would be gas.
Based on these footprints, you decide that the organism started to run.
Your idea is known as what? *
Answers
arrange 0.35 kilograms 9.4 grams and 5 grams to smallest to largest
Answers
Answer:
5 grams < 9.4 grams < 0.35 kilograms
Explanation:
Kilograms (Kg) and grams (g) are both units of measurement for MASS quantity. However, these units are not the same as they vary in magnitude. The kilograms is bigger unit of measurement than the grams. 1000grams makes 1kilograms.
According to this question, 0.35 kilograms 9.4 grams and 5 grams are to be arranged in ascending order i.e. from smallest to largest. First, we need to change all the units to the same.
We change 0.35kg to g
Since 1000g = 1kg
Then, 0.35kg = 0.35 × 1000
= 350g.
Rearranging the values, we have:
5 grams < 9.4 grams < 0.35 kilograms
You have a rock with a a volume of 15cm3 and a mass of 45 g. What is its density
Answers
Answer:
3 g/cm3
Explanation:
d=m/v
=45/15
= 3 g/cm3
Answer:
2.46621 cm
Explanation:
i used the formula p = m/V
which chemical species can easily for an ionic bond with a cation?
A. Sr
B. Ne
C. NH4+
D. PO4³-
Answers
Answer:Option D
Explanation:i took the test
Placing a sample of iron (II) oxide into a graduated cylinder makes the water volume increase 12.0 ml. The weight of the sample is 76.6g. What is it’s density? (Round to the nearest hundredths)
Answers
Answer:
The answer is 6.83 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\[/tex]
From the question
mass of iron (II) oxide = 76.6 g
volume = 12 mL
We have
[tex]density = \frac{76.6}{12} \\ = 6.3833333...[/tex]
We have the final answer as
6.83 g/mL to the nearest hundredthHope this helps you
Answer:
it 76.6
Explanation:
cause it is what it is
A biopsy is performed to determine if the tumor is
Answers
Answer:
cancerous
Explanation:
Changes in ________ move matter from one state to another.
Answers
Answer: energy
Explanation:hope this helps.
Answer:
Temperature
Explanation:
What happens immediatesly after you dissolve acid in water? Positively charged hydrogen atoms are released. Positively charged hydrogen atoms are released. Negatively charged hydrogen atoms are released. Negatively charged hydrogen atoms are released. Hydronium ions are released. Hydronium ions are released. Neutrally charged hydrogen atoms are released. Neutrally charged hydrogen atoms are released.
Answers
Answer:
The correct answer is A.
Explanation:
The acids with hydrogen atoms in them are the ones that dissolve best in water and when they do, they get diluted, raising their pH level by releasing hydrogen ions (H+) into the solutions.
So when acids get dissolved in water, positively charged hydrogen atoms are released.
The answer is A.
I hope this helps.
3
Which of the following does not affect the gravitational force
between the earth and the sun
A
The mass of the earth
B
The mass of the sun
с
The distance between the earth and the sun
D
The net electrical charge of the earth
Answers
Answer:
D. The net electrical charge of the Earth.
Explanation:
I remember from middle school. The other three options affect the gravitational force.
The gravitational force between the earth and the sun is dependent on the mass of these two objects as well as the distance between the earth and the sun. Thus, option D is the correct answer.
Why is gravitational pull important?Gravitational pull is referred as a force of attraction beared by the planetary objects. Gravity is responsible for the revolution of planets around the sun in their fixed orbits.
Gravitational pull is important as it keeps the earth revolving around the sun from a safe distance. It holds the earth in position and thus supports the life on earth. Gravity is responsible for optimum atmosphere on earth.
The formation of celestial bodies is also under the influence of gravitational pull. Gravitational force thus is consired as a fundamental force that govers all the celestial bodies.
Gravitational pull is therefore important for the life on earth.
Learn more about gravitational pull, here:
https://brainly.com/question/3009841
#SPJ2
____is the terrestrial planet that has almost no atmosphere
Answers
Answer:
Should be Mercury.
Explanation:
The atmospheres of the terrestrial planets range from thin to thick. Mercury has almost no atmosphere.
What is the for this Name 0.1013
Answers
Answer:
it s not on periodic table this is not real element
Explanation:
what does it mean when you hear science is tentative?
Answers
Answer/Explanation:
Tentative means that something is uncertain. So if some aspect of science is described as "tentative" it probably means that there is some evidence to support a hypothesis, but there is more work to be done to be sure about the statements being made.
You may also see these reports described as "preliminary", as they are acknowledging the work is not complete
How much does a proton weigh
Answers
Answer:
9.11 x 10 -28 grams
Explanation:
an isotope or barium (atomic number 56)has an mass of 138.how many neutrons are in the nucleus of this isotope
Answers
Answer:
Diagram of the nuclear composition and electron configuration of an atom of barium-138 (atomic number: 56), the most common isotope of this element. The nucleus consists of 56 protons (red) and 82 neutrons (blue).
Which of the subatomic particles are responsible for the differences in isotopes?
Protons
Electrons
Atoms
Neutrons
Answers
Answer: Neutrons
Explanation:
Isotopes are atoms of the same element that have different numbers of neutrons but the same number of protons and electrons. The difference in the number of neutrons between the various isotopes of an element means that the various isotopes have different masses.
Answer:
neutrons
Explanation:
isotopes has the same proton number but different nucleon number because there's different numbers of neutrons in isotopes
Li, Rb, F, and I
Which one would have the highest Electronegativity? Why?
Answers
Answer:
F
Explanation:
has 7 valence electrons , it really want to hog another electron to reach an octet.
therefore it has a highest electronegativity
How many neon atoms are in 2.7 moles of neon ?
Answers
Answer:
2.7 moles of neon contain 16.3 × 10²³ atoms of neon.
Explanation:
Given data:
Number of moles of neon = 2.7 mol
Number of atoms of neon = ?
Solution:
We will use using Avogadro number to solve given problem.
"It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance"
The number 6.022 × 10²³ is called Avogadro number.
1 mole of neon = 6.022 × 10²³ atoms of neon
2.7 mole of neon × 6.022 × 10²³ atoms of neon / 1 mole of neon
16.3 × 10²³ atoms of neon
Thus, 2.7 moles of neon contain 16.3 × 10²³ atoms of neon.
A rock has a density of 2.2 g/cm3 and a volume of 66.5 mL. How much mass does the rock have?
Answers
Given parameters:
Density of the rock = 2.2g/cm³
Volume of rock = 66.5mL
Unknown:
Mass of the rock = ?
Solution:
Density is the mass per unit volume of a body. It is mathematically expressed as shown below;
Density = [tex]\frac{mass}{volume}[/tex]
So;
Mass = Density x Volume
We need to take the given parameters to the same unit before we solve;
convert mL to cm³
1mL = 1cm³; 66.5mL is the same as 66.5cm³
Now solve;
Mass = 2.2 x 66.5 = 146.3g
The mass of the rock is 146.3g
Pleaseeee help meeeee
Answers
Answer:You have it right the answer is c!
Explanation:
Answer:
c ........................!
[
An atom, which is an isotope of an element, is characterized by -
O having more electrons in its nucleus.
O having more neutrons in its nucleus.
having fewer protons in its nucleus.
having more protons in its nucleus.
Answers
Answer:
gime fre points
Explanation:
fre points for me!
As the atomic number on the Periodic Table increases, the number of electrons A. is unchanged B. alternates C. decreases D. increases
Answers
Answer:
D.
Explanation:
I looked it up and said increases, i'm taking a test today in chemistry and had the same question lol.
What was the most likely problem with the first set of
data?
O It was inadequate.
O It was false.
O It was recorded by one person.
O It was not recorded in a lab.
Answers
Answer:
it is A
Explanation:
Please answer this it’s due tomorrow I’ll give you brainliest
Answers
Answer:
The answer is the last one
Explanation:
1. Give
2.me
3. Brainliest
4.please
Answer:
Explanation:
I’m not sure friend but my best guess would be 2 and 4. If it’s wrong I’m sorry but that seems the most reasonable to me. Good luck :)
what other substances are considered pure substances
Answers
Explanation:
B and C they are the pure substances
Elements are considered as pure substances . Elements are mostly metals, non - metals and metalloids , so option C is right.
What are Elements ?An element is a substance that cannot be broken down by non - nuclear reaction. Elements considered as a pure substance . All elements are mostly pure substances. A few of them include gold, copper, oxygen, chlorine, diamond, etc. Compounds such as water, salt or crystals, baking soda amongst others are also grouped as pure substances.
An element is a fundamental item that cannot be easily broken in smaller pieces. There are about 100 elements ,each with it's own types of atom. Everything in universe contain an atom of at least on or more than one elements.
Elements are pure substances ,hence option C is correct.
To learn more about elements refer the following link;
https://brainly.com/question/14347616
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3
In which of the following states of matter are the particles very far apart so they can fill their containers?
A.
gases only
ОВ.
solids, liquids, and gases
solids and liquids only
C.
D.
solids only
Answers
Answer:
A
Explanation:
With the given choices, A would be correct for this question. But, both liquids and gases have particles that are far apart so that they can fill their containers.
an ion that consists of 7 protons, 6 neutrons, and 10 electrons has a net charge of
Answers
Answer:
-3
Explanation:
The charge of the ion is determined by the number of protons and the number of electrons.
Protons are a positive + charge.
Electrons are a negative - charge.
We have 7 protons and 10 electrons.
+7 charge
-10 charge
-10 + 7 = -3 charge
Which mineral is soft enough to be scratched by a fingernail?
a)
corundum
b)
calcite
c)
talc
d)
topaz
Answers
Answer:
Talc
Explanation:
Talc only has a hardness of one on the Moh's scale of hardness. This translates into a very soft material, which results from its layered nature. Naturally, this substance is hydrophobic (dislikes water), and tends not to absorb water, therefore giving some of its favourable water-resistant characteristics.
How much zeros does 1 million have? and 2 days ago was my bday turning 13
#LibraGurl
Answers
Answer:
there is about 6 zeros in 1,000,000
Answer:
6 0's
Explanation:
happy bday #LibraGurl