Answers
#1
Heterogenous mixture mean unsimilar substances .
Chicken noodle soyp.salt waterpropane.#2
An element is a substance made of only one type of atoms
Example-Al,SRelated Questions
what is the name of the ionic compound made of beryllium and chlorine?
Answers
Answer:
beryllium chloride
Explanation:
Therefore a compound made from beryllium and chlorine will be named beryllium chloride.
A HOMOGENEOUS LIQUID THAT CANNOT BE SEPARATED INTO ITS COMPONENTS BY DISTILLATION BUT CAN BE DECOMPOSED BY ELECTROLYSIS IS CLASSIFIED AS A/AN _______________.
ELEMENT
SUBSTANCE
COMPOUND
SOLUTION
Answers
Answer:
ELEMENTS
Explanation:
CUZ AN A
ELEMENT IS A GROUP OF ATOMS THAT CANNOT BE BROKEN DOWN BY ANY CHEMICAL OR PHYSICAL MEAN
What is the most common ion charge of chromium? Where on the periodic table?
Answers
Answer:
i
Explanation:
The most common oxidation states of chromium are +6, +3, and +2. On the metal area of the periodic table.
Explanation:
Someone pls help me
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Answer:
A. 4 cm, 40 mm
B. 5.5 cm, 50 mm
C. 8.8cm, 80 mm
D. 8.2 cm, 82 mm
E. 9.5cm, 95 mm
Explanation:
NB: 1 cm = 10 mm
Explain why, at room temperature, CO2 is a gas and CS2 is a liquid. You may use diagrams as part of your explanation.
Answers
Explanation:
A. Hydrogen bonding is present in CS2 but not in CO2.
B. CS2 has greater dipole moment than CO2 and thus the dipole-dipole forces in CS2 are stronger.
C. CS2 partly dissociates to form ions and CO2 does not. Therefore, ion-dipole interactions are present in CS2 but not in CO2.
D. The dispersion forces are greater in CS2 than in CO2.
PLS MARK BRAINLIEST :D
Fossil fuels—such as coal, oil, and natural gas—come from ancient, and long dead, plant and animal matter. These fuels have been generated through millions of years of the Earth's geologic processes. Most fossil fuel reserves are found underground, relatively close to the Earth's surface.
At the current rate that human civilization is burning fossil fuels for energy, the Earth's geologic processes have no chance of keeping pace. This means that fossil fuels are a _______ energy resource.
A.
synthetic
B.
nonrenewable
C.
plentiful
D.
renewable
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Answer:
Nonrenewable
Explanation:
There is a finite supply of fossil fuels
The energy of motion is known as potential energy.
Question 1 options:
True
False
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Answer:
False
Explanation:
This is because potential energy is energy that it not used yet.
9 ml of a sugar solution was mixed with 3 ml of a 76% sugar solution to make a 73% sugar solution. Find the percent concentration of the first solution.
Answers
Solving:
9x + 0.76(3) = 0.73(12)
9x + 2.28 = 8.76
9x = 6.48
x = 0.72 or 72%
Just need to make sure if this is right
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Answer:
yeah think that’s correct
Explanation:
not exactly sure how to explain this, I just know that it’ll prolly just stay the same and not move to any high and low regions of the cell
3. Connect the electron configuration of Columns 6 (Oxygen) and 7 (Fluorine) with the
tendency to gain or lose valence electrons easily and the strength of the tendency for
electronegativity.
Answers
Answer:
I DON'T KNOW
Explanation:
I DON'T KNOW
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how can you tell the number covalent bonds the atoms of an element can form?
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Cual es la convención de 746 Hm
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Answer:
75.6
Explanation:
756x0.1=75.6
1 d =hm=0.1
How many moles are in 6.20 x 10^24 molecules of H2O?
Answers
Answer:
10.3 molesExplanation:
To find the number of moles in a substance given it's number of entities we use the formula
[tex]n = \frac{N}{L} \\[/tex]
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
[tex]n = \frac{6.20 \times {10}^{24} }{6.02 \times {10}^{23} } \\ = 10.299003[/tex]
We have the final answer as
10.3 molesHope this helps you
5. Element X has two isotopes: X-100 and X-104. If the atomic mass of X is 101
amu, what is the relative abundance of each isotope in nature?
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Answer:
The abundance of X-100 is 75 percent, and X-104 has an abundance of 25 percent. The answers are found by solving two equations with two unknowns, which are A plus B equals 100, and 100A plus 104B equals 10,100.
The relative abundance of each isotope in nature
X-100 = 75%
X-104=25%
By dividing the total number of ions identified by the number of ions with a particular m/z m/z m/z ratio, one may determine the relative abundance for each individual ion in the sample.
How can the abundance of two isotopes be determined?
For chemistry problems involving relative abundance, use the following formula:
(M1)(x) + (M2)(1-x) = M (E)
Find the relative abundance of the isotopes if one nitrogen isotope, nitrogen-14, has a mass of 14.003 amu and another, nitrogen-15, has a mass of 15.000 amu.
Algebra can be used to find x. ...
x = 0.996
To learn more about relative abundance refer to:
https://brainly.com/question/19425232
#SPJ2
If a cell has 4 chromosomes at the beginning of meiosis, how many chromosomes will be in each cell at the end of meiosis?
Answers
Answer:2. Mitosis would produce identical daughter cells with the same number as the parent cell. Meiosis would product sex cells with one-half the amount of genetic material as the parent cells.
Explanation:
If a cell has 4 chromosomes at the beginning of meiosis then the daughter cell will have TWO chromosomes at the end of meiosis.
Meiosis is a type of reductional cell division by which a parental cell duplicates its genetic material (DNA) and then divides twice to produce four (4) daughter cells having half of the genetic material.These successive cell division cycles are known as Meiosis I and Meiosis II.Meiosis is a sexual mode of reproduction that produces gametes or geminal cells, which fuse during the process of fertilization to form a zygote.
In conclusion, if a cell has 4 chromosomes at the beginning of meiosis then the daughter cell will have TWO chromosomes at the end of meiosis.
Learn more in:
https://brainly.com/question/7002092
Which property accounts for the fact that atoms can be identified by an examination
of the emission spectrum?
A. Each kind of atom has a different mass number.
B.Each kind of atom has a different atomic number.
C.Each kind of atom has a different isotopes.
D. Each kind of atom has a characteristic difference in energy levels for electrons.
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Answer:
Explanation:
D is the answer
Each kind of atom has a characteristic difference in energy levels for electrons, this property accounts for the fact that atoms can be identified by an examination, therefore the correct answer is option D.
What is the photoelectric effect?It is the process of emission of electrons from the material because of absorption of electromagnetic radiation in form of photons of light waves.
The photoelectric effect explains the particle behavior of the light waves.
Each kind of atom has a characteristic difference in energy levels for electrons this fact can be used to identify the different atoms by using inspection.
Thus, the correct answer is option D.
To learn more about the photoelectric effect, refer to the link;
brainly.com/question/9260704
#SPJ2
The opposite of an endothermic reaction is a(n) reaction.
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Answer:
The opposite of an endothermic process is an exothermic process, one that releases or "gives out" energy, usually in the form of heat and sometimes as electrical energy.
Explanation:
Hope this helps you. Have a nice day. Please mark as brainliest. It helps a lot. ^_^
Who is the Father of the Periodic Table?
Answers
Answer:
Dmitri Ivanovich Mendeleev
Explanation:
Answer:
Dmitri Mendeleev
Explanation:
Can someone please tell me the answer on this. First person to answer will most definitely be marked brainliest so please just tell me the answer. The deadline is in 5 MINUTES!!
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particles, high, low, oxygen, waste, carbondioxide, fast.
1 An atom has 24 protons, 22 electrons, and 28 neutrons. What is the atomic number of the atom?
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Answer:
24
Explanation:
I need help with this , here are the words ( black,radiation, time, holes and universe
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carbon dioxide + Calcium Carbonate =?
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Answer:
calcium carbonate deteriorates, delivering carbon dioxide gas and leaving behind calcium oxide a white solid. Over the long haul, this responds with carbon dioxide noticeable all around to frame gems of calcium carbonate, which lock the sand grains together to shape a hard rock-like material
Explanation:
Answer:
calium bicarbonate
Explanation:
is this statement true or false? the chinese knew how to produce silk by about 2700 b.c.
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Answer:
its true
Explanation:
I took the test
with increasing altitude, air density also increases... true or false
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Answer:
false
Explanation:
convert 230.000 000 000 mi into scientific notation
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Answer:2.3×10^11
Explanation:since scientific notation is as a×10^k with 0<a<=9
Which of the following is an observation of a chemical property?
zinc reacts with hydrochloric acid
water boils at 100°C.
density of wood is 0.51 g/cm3
sand paper is roughly textured
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*20 points* Pls answer questions in a positive way NO LINKS NO FILES Thank you
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Answer:
A compound is a substance made of two or more different atoms which are chemically combined(Option B)A mixture is made of two or more substances that are not chemically combined (OptionB)Explanation:
Example of compound(CO)
Example of mixture(Milk)
how to tell how many valence electrons an atom has?
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Answer: Count only the electrons in the highest shell s and p orbitals when determining valence.
Explanation: I'm glad you asked this question. It is often not well explained. The term valence electrons is assigned to only the electrons in an element's highest energy level. These reside only in the s and p orbitals, and not the d or f, as I'll explain later. The s orbital can hold 2 electrons and the p can hold 6. Potassium, K, has an s orbital in its highest energy shell, 4. It contains only 1 electron, so it has a valency of 1.
Calcium, Ca, has 2 in its highest energy level: 4s^2, so it has a valency of 2. Moving to the right, the element scandium, Sc, add another electron, but it goes into the 3d orbital. 3d is in the 3rd energy shell, so it is not counted as a valence electron. Only after we move further right, to gallium, Ga, do we start adding electrons to the 4th energy level again - the 4p orbitals can accept up to 6 electrons. Ga has 3 valence electrons - 2 in the 4s and 1 in the 4p. Oxygen has 2 in the 2s and 4 in the 4p orbitals, for a total of 6. It is close to having a comple outer shell (2 in the 2s and 6 in the 2p). Just 2 more electrons would fill both the 2s and 2p orbitals for a total of 8 valence electrons, a stable configuration (the same configuration as thje stable gas Neon).
Please tel me the answer I will mark you brainliest
Answers
2 is the answer
Explanation:
the other answers are all included in the cell theory
Convert 3,124,991 centimeters (cm) to miles (mi) rounding to 4 sig figs
Answers
Answer:
19.417794 mi
Explanation:
Answer:
19.41
Explanation: