Answer: Calcium Cyanide?
Explanation:
GIVING BRAINLIEST TO WHOEVER ANSWERS THIS!!
What is the density of rod D, in g/cm3 ? Mass is 15 grams and volume is 14 cm3.
A: 2.5 g/cm3
B: 1.4 g/cm3
C: 1.1 g/cm3
D: 0.94 g/cm3
Answer:
The answer is option CExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\ [/tex]
From the question we have
[tex]density = \frac{15}{14} \\ =1.0714285 ...[/tex]
We have the final answer as
1.1 g/cm³Hope this helps you
What is the volume of a 16.24 g sample of magnesium in cubic centimeters? Show a numerical setup and result for credit.
Answer:
9.34 cm³
Explanation:
From the question given, we obtained the following data:
Mass of magnesium = 16.24 g
Volume of magnesium =.?
To obtain the volume of the magnesium sample, we simply apply the formula for calculating the density of samples. This is illustrated below:
Mass of magnesium = 16.24 g
Density of magnesium 1.738 g/cm³
Volume of magnesium =.?
Density = mass /volume
1.738 = 16.24/volume
Cross multiply
1.738 × volume = 16.24
Divide both side by 1.738
Volume of magnesium = 16.24/1.738
Volume of magnesium = 9.34 cm³
Therefore, the density of the magnesium sample is 9.34 cm³.
What is conserved in physical changes?
shape
energy
mass
density
Answer:
The answer is C.
Explanation:
By the Law of conservation of mass, when a element, or product undergoes a physical change, mass always stays the same.
Hope you have a good day.
During physical change the mass of the material remains conserved. The correct option is C.
What is physical change?Even before to and after a physical change, the material implicated is unique architectural the same.
Physical changes include texture, shape, heat, and the beginning of a change in the state of matter. The texture of a substance influences how it feels.
A physical change is simply a change in appearance. The situation has not changed since the change.
Physical change can be seen in the use of cutting paper, melting butter, dissolving salt in water, and breaking glass.
Mass is neither created nor destroyed in chemical or physical changes, according to the law of conservation of mass.
Physical changes occur when the phage of a substance changes without changing its chemical composition.
Thus, the correct option is C.
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Are atoms the smallest particles we know about, or are there smaller ones?
Answer:
That we know about yes, but physicians still say there are more things out there. (we do not know about these yet tho)
Explanation:
someone please pleaseeee help me
Perform the following mathematical operation, and report the answer to the correct number of significant figures.
1.987/3.46 =
Answer:
I don't know sorry, you could use a calculator
Explanation:
i don't know
why would an atom have zero charge
Answer:
The overall charge of an atom is zero. ... The charge from a proton or electron are of equal strength, therefore if an atom has an equal number of protons and electrons, it will be electrically neutral. However, atoms are not always electrically neutral, in which case they are called ions.
Explanation:
Sorry if it's wrong!!!!
Answer if you know the answer //Which of the following is an unusual property of water?
A. Its atoms are bound by ionic bonds.
B. It doesn't exist in the gaseous state on Earth.
C. Its charge is balanced evenly around the atom.
D. It's a polar molecule.
H2O is covalent so A is false.
Water is in clouds so B is false.
Water is polar so C is false.
D is correct H2O has an imbalance of e- so it is polar. [tex]+H-O(-)-H+[/tex]
An unusual property of water is a polar molecule. Therefore, option D is correct.
What is polar molecule ?When two atoms form a covalent bond but do not share their electrons equally, polar molecules are created. A dipole is created when a portion of the molecule has a slight positive charge and a slight negative charge.
Because the electrons of the hydrogen atoms are "drawn" toward the electrons of the oxygen atom, water (H2O) is a polar molecule. As a result, the hydrogen atoms have a positive charge, whereas the opposite end of the molecule has a negative charge.
Polarity is one of the special characteristics of water because it is composed of polar molecules. Each water molecule has one oxygen atom and two hydrogen atoms (H2O). Polar covalent bonds are created by these compounds. The atoms of hydrogen are positively charged.
Thus, option D is correct.
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Do all systems have Inputs and Outputs? I’m sorry I’m really dumb
PLEASE I NEED HELP ASAP
Answer:
Because the density of water is one
in the modern periodic table elements are raised according to increasing
Answer:
in the modern periodic table elements are raised according to increasing atomic number
PLEASE PLEASE HEELPPPP
Landslides happen when it rains making the ground heaver and more likeable to a landslide.
which one represents an element
Answer:
B
Explanation:
Which phrase correctly describes the particles that make up water vapor?
A. Having more energy than particles in liquid water
B. Making up a rigid but disorganized structure
C. Making up a rigid but ordered structure
D. Being compressed together so that they are touching
Answer:
i believe its A but im not sure
its the only one that makes any sense
plz mark brainliest
\
Explanation:
Answer:A
Explanation:
which phase of matter is the rarest in the solar system
Answer:
liquid
Explanation:
Answer:
liquid
Explanation:
do you think pokemon is bad
how many significant figures in 4300 ?
Answer:
Four significant figures
Explanation:
The number of significant figures is defined as the number of digits that can be assumed to be correct, starting at the left with the first nonzero digit, and proceeding to the right.
Which of the following is a characteristic of both scientific laws and
scientific theories?
A supported by much scientific evidence
B explain why something happens
C based on opinions of scientists
D describes what happens
revious
Answer:
A supported by scientific evidence
The nucleus of an atom consists of:
a. lons & isotopes
b. Electrons & neutrons
c. Protons & neutrons
d. All of the above.
Answer:
the nucleus of an atom consistens of protons and neutrons
can someone help me with this question its confusing
ASAP
Answer:
temperature
Explanation:
What type of weather is associated with a continental polar air mass?What is a front?
Answer:
I would guess that a polar air mask would be freezing, high winds type weather. I think that's right.
Answer:
Cool and dry
Explanation:
Exactly what it is on Edge
I know I am late to answer but for the points and for the people that need it
why is it that you can not feel earths movement but you can observes its effects
a) a rotates
b) earth revolves
c) earth only moves once a year
d) earth has gravity
pls help it’s due at 12
Answer:
it's
D. 2K + 2H2O
Explanation:
it just is
What's another word for hypothesis
Answer:
Explanation:
theory
theorem
thesis
conjecture
supposition
speculation
postulation
postulate
proposition
premise
surmise
assumption
presumption
prediction
Would you feel like a superhero if you could melt metal just by holding it? The element gallium is a solid at room temperature, but it will reach
its melting point and melt if you hold it in your hand. If you pour the liquid gallium into a container at room temperature, it will become solid
again. How do the melting point and the freezing point of gallium compare to each other?
O A The freezing point of gallium is higher than its melting point
O
B. The freezing point of gallium is lower than its melting point.
O
C. The freezing point of gallium equals its melting point.
OD
Both the freezing point and the melting point of gallium vary.
Answer:
C is your correct answer i blieve
The element gallium has equal freezing point and melting point owing to which on pouring liquid gallium in container it becomes a solid.
What is an element?An element is defined as a substance which cannot be broken down further into any other substance. Each element is made up of its own type of atom. Due to this reason all elements are different from one another.
Elements can be classified as metals and non-metals. Metals are shiny and conduct electricity and are all solids at room temperature except mercury. Non-metals do not conduct electricity and are mostly gases at room temperature except carbon and sulfur.
The number of protons in the nucleus is the defining property of an element and is related to the atomic number.All atoms with same atomic number are atoms of same element.
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what element has 16 protons in it's nucleus?
I need help with this question ASAP
the answer is thermal.......
Explain how cooking is a real
world example that models how
the atoms from the reactants
rearrange and come together in
different arrangements to form
new substances.
Answer:
Explained below
Explanation:
In chemistry, the process of a chemical change is when the atoms from the reactants rearrange themselves and bond together differently to form one or more new substances with different characteristics than the reactants. Now, after this new substance is formed, the change is called a chemical change.
Now, in cooking Food will undergo a chemical change as it is being cooked. For example, when we boil brown meat, we are causing reactions that change the chemical composition in ways that enhance flavors. Proteins and fibers such as beans when cooked are broken down or undergo denaturation thereby making digestion easier when eaten. Fats like cooking oils are melted while Eggs when boiled are coagulated.
Which of the following statements is true about neutrons?
a)They have a neutral charge and are found in an atom's nuclues
b)They have a negative charge and are found in an atom's nucleus
c)They have a positive charge and are found in the orbitals of an atom
d)They have a neutral charge and are found in the orbitals of an atom
Answer:
A
Explanation:
Protons are positive
Neutrons are neutral
Electrons are negative
Protons and Neutrons are in the nucleus
Electrons are orbiting around the nucleus
The statement that is true about about neutrons is that They have a neutral charge and are found in an atom's nucleus.
What are neutrons?Neutrons are electrical charge that is form in the atoms of elements which is neutral that is it's is neither positive or negatively charged.
Neutrons have no charge , they are neutral.
Therefore, The statement that is true about neutrons is that They have a neutral charge and are found in an atom's nucleus.
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Question 13 of 25
How has the work of chemists affected the environment over the years?
A. Chemists have both hurt the environment and helped the
environment by their actions.
B. Chemists have tried very hard not to impact the environment with
their work.
C. Chemists have ruined the environment through the misuse of
poisonous chemicals.
O D. Chemists have belan required to fix all environmental problems
that they have caused.
Answer: is A
Explanation:
how becuase i just take the test
Answer:
A
Explanation:
Imagine that you're writing a paper on the topic of ocean acidification. Find two articles about ocean acidification on the Internet that you could use in your research. Name them Source 1 and Source 2, and include a link to each source. Be sure to also include the name of the website or organization that published the source.
Answer:
See explanation
Explanation:
When you are writing a scholarly paper, you have to conduct a thorough search for source materials online. These sources must be reliable, credible and contain verifiable information. In a project such as writing a paper on the topic 'ocean acidification', the following materials are relevant;
Source 1) 'Functional impacts of ocean acidification in an ecologically critical foundation species,'; Brian Gaylord, Tessa M. Hill, Eric Sanford, Elizabeth A. Lenz, Lisa A. Jacobs, Kirk N. Sato, Ann D. Russell, Annaliese Hettinger; Journal of Experimental Biology 2011 214: 2586-2594; doi: 10.1242/jeb.055939
Source 2) 'Impacts of ocean acidification on marine fauna and ecosystem processes'; Fabry, V. J., Seibel, B. A., Feely, R. A., and Orr, J. C. ; ICES Journal of Marine Science, 65: 414–432; doi: 10.1093/icesjms/fsn048