Answers
Answer:
the second option
Explanation:
look at the distance where the meet up at the house and the go to school
Related Questions
The asthenosphere flows because of
Answers
before phase change: molecules move around each other 15. The medicine in the diagram above has molecules that are moving around each other. The doctor needs to slow down the molecules enough to cause a phase change. How will she do this, and how will this affect the medicine? I She transfers energy ... a into the medicine until it is a liquid. b) into the medicine until it is a gas. C out of the medicine until it is a solid. d out of the medicine until it is a liquid. LE 1 21 Illuminate Education, Inc.
Answers
Answer:
She transfers energy out of the medicine until it is solid. So the answer would be C.
Explanation:
According to the forces of attraction , molecules can be slowed down by moving out of the medicine until it is a solid , it will decrease the rate of absorption of medicine.
What are forces of attraction?Forces of attraction is a force by which atoms in a molecule combine. it is basically an attractive force in nature. It can act between an ion and an atom as well.It varies for different states of matter that is solids, liquids and gases.
The forces of attraction are maximum in solids as the molecules present in solid are tightly held while it is minimum in gases as the molecules are far apart . The forces of attraction in liquids is intermediate of solids and gases.
The physical properties such as melting point, boiling point, density are all dependent on forces of attraction which exists in the substances.
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I need to know why the particles at the surface in the image below have surface tension while the particles below the surface do not.
Answers
what is fermentation
Answers
Fermentation is a metabolic method that creates chemical changes in natural substrates through the action of enzymes.
Explanation: hope this helps :)
Question 21 of 25
Which of the following best describes an Arrhenius acid-base reaction?
O A. Acid + base = H+ + OH-
B. Acid + base = salt + water
C. Acid + base = conjugate base + conjugate acid
D. Acid + base =
H20
Answers
Answer:
B. Acid + base = salt + water
Explanation:
In accordance to the proposal of a scientist called Svante Arrhenius, an acid is a substance that increases the H+ concentration of a solution by dissociating into it while the base increases the OH- concentration of a solution by dissociating into it. Furthermore, Arrhenius stated that this two ions combine in an aqueous solution to give water.
Hence, Arrhenius acid-base reaction is the combination of an acid and base to produce salt and water as products. That is; Acid + base = salt + water.
Select the structure that corresponds
to the name:
3,5,6-trichloro-2-heptanol
Answers
Answer:C both
Explanation:
The Structure that correspondsto the name: 3,5,6-trichloro-2-heptanol is C both.
How nomenclature is done in organic compound ? First name the principal carbon chain and also check type of bonds single or double present on the carbon chain. Name the functional group according to Seniority table. Name the substituent alphabetically. Both are isomers∵ all are substituent and OH alcohol is added on the principal carbon chain both names are suggested.
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PLEASE HELP What's the mass in grams of 0.442 moles of calcium bromide, CaBr2? The atomic
weight of Ca is 40.1 and the atomic weight of Br is 79.9.
A) 452.3 g
B) 53.04 g
C) 44.2 g
D) 88.4 g
Answers
Answer: Thus there are 88.4 g of calcium bromide.
Explanation:
According to avogadro's law, 1 mole of every substance weighs equal to the molecular mass and contains avogadro's number [tex]6.023\times 10^{23}[/tex] of particles.
Molar mass of = 40.1 (1)+ 2(79.9) = 199.9
To calculate the moles, we use the equation:
[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}[/tex]
[tex]0.442=\frac{x}{199.9}[/tex]
[tex]x=88.4g[/tex]
Thus there are 88.4 g of calcium bromide.
C2H6 + Cl* => C2H5* + HCl
Answers
Answer:
C2H6 + Cl → C2H5 + HCl
equation is balanced
Why is boiling water a physical change
Answers
Answer:
it is cleaning the water and heating it
Answer:
When boiling the water, the water will begin to evaporate and thats the physical change.
An aluminum soft drink can is approximately 0.55 moles of aluminum. How many
aluminum atoms are used in manufacturing each soft drink can?
Answers
Explanation:
Round 87.073 meters to 3 significant figures. write your answer in scientific notation. step 1: 87.073 rounds to step 2: write scientific notation : meters...
One mole of aluminum contains 6.022 × 10²³ atoms. This number is called Avogadro number. Therefore, 0.55 moles of aluminum contains 3.31 × 10²³ atoms.
What is Avogadro number ?One mole of any substance contains 6.022 × 10²³ atoms. This number is called Avogadro number. One mole of every elements contains Avogadro number of atoms.
Aluminum is 13th element in periodic table. It shows metallic properties as well as some non-metallic properties. The symbol of aluminum is Al. It forms compounds mostly through covalent bonding.
One mole of aluminum contains 6.022 × 10²³ atoms.
Thus, number of atoms in 0.55 moles = 0.55 × 6.022 × 10²³ = 3.31 × 10²³ atoms.
Therefore, the number of Al atoms in 0.55 moles is 3.31 × 10²³ .
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how many grams of carbon tetrachloride can be produced from reacting 709.0 grams of chlorine (CI2) with excess methane?
Answers
Hope this helps!
Read the question and help me with the answer please
Answers
what is the reaction type for Zn(C2H3O2)2 + Na3(PO4)?
Answers
Answer: This is a precipitation reaction: Zn 3(PO 4) 2 is the formed precipitate.
Explanation:
Go this Answer form, (chemequations.com)
Im Glad I helped! =)
What are the three major Eras from 600 million years ago to today
Answers
Answer:
he Paleozoic, Mesozoic, and Cenozoic.
Explanation:
if a runner decreases his velocity from +20 m/s to +10 m/s what is his average acceleration
Answers
Answer:
f a runner decreases his velocity from +20 m/s to +10 m/s, with average acceleration is -5m/s².
Explanation:
2. Germ cells are found in the
A. heart
B. lungs
C. muscles
D. ovaries
Answers
Answer:
D- located in ovaries...
How do I balance coefficient equations
Answers
Answer:
In order to balance the chemical equation, you need to make sure the number of atoms of each element on the reactant side is equal to the number of atoms of each element on the product side. In order make both sides equal, you will need to multiply the number of atoms in each element until both sides are equal.
Answer: When you balance a chemical equation, you change coefficients. You never change subscripts. A coefficient is a whole number multiplier. To balance a chemical equation, you add these whole number multipliers (coefficients) to make sure that there are the same number of atoms on each side of the arrow.
Explanation:
Which animal is a vertebrate
Fish
crab
shrimp
octopus
Answers
Answer:
fish
Explanation:
vertebrate is an animal with a spinal cord surrounded by cartilage or bone ,so example of a vertebrate is fish
If a combination reaction takes place between lithium and fluorine, the chemical formula for the product is A. LF B. LiF C. LiF2 D. Li2F
Answers
Thus, B would be the correct answer.
What is the correct IUPAC name for Al(IO₃)₃?
Answers
Answer:
Aluminum Iodate
The IUPAC name of Al(IO3)3 is diiodyloxyalumanyl iodate.
What is IUPAC name ?The systematic method of nomenclature of the organic or inorganic compound on the basis of International Union of Pure and Applied Chemistry.
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understanding coefficients
Answers
Answer:
Mg-9
N-6
C-2
O-4
Ca-9
P-6
O-24
Explanation:
In which of these two states of matter is water the least dense: solid or liquid?
Answers
Answer:
liquid
Explanation:
it is only the thing in what water can disslove
Determine the number of grams of carbon-14 remaining in this sample at 17,100 years.
Answers
Answer: I need help
Explanation:
A buffer solution contains 0.345 M acetic acid and 0.377 M sodium acetate . If 0.0613 moles of potassium hydroxide are added to 250 mL of this buffer, what is the pH of the resulting solution ? (Assume that the volume does not change upon adding potassium hydroxide. )
Answers
Answer:
pH = 5.54
Explanation:
The pH of a buffer solution is given by the Henderson-Hasselbach (H-H) equation:
pH = pKa + log[tex]\frac{[CH_3COO^-]}{[CH_3COOH]}[/tex]For acetic acid, pKa = 4.75.
We calculate the original number of moles for acetic acid and acetate, using the given concentrations and volume:
CH₃COO⁻ ⇒ 0.377 M * 0.250 L = 0.0942 mol CH₃COO⁻ CH₃COOH ⇒ 0.345 M * 0.250 L = 0.0862 mol CH₃COOHThe number of CH₃COO⁻ moles will increase with the added moles of KOH while the number of CH₃COOH moles will decrease by the same amount.
Now we use the H-H equation to calculate the new pH, by using the new concentrations:
pH = 4.75 + log[tex]\frac{(0.0942+0.0613)mol/0.250L}{(0.0862-0.0613)mol/0.250L}[/tex] = 5.54FOR BRAINLIST!!!
A Student 1
B Student 2
C Student 3
D Student 4
Answers
Answer:
Student 2
Explanation:
I am not 100% sure but I would say Student 2
:)
i agree with the other answer
More than half of the elements are in which state of matter at room temperature?
What happens to the atomic mass when the atomic numbers increase?
Which elements does not belong to a main group of elements?
Please help I really need help!!
Answers
Answer:gas
Explanation:
Which structure is unique to vertebrates?
limbs
brain
skin
backbone
Answers
Answer:
Backbone
Explanation:
Organisms that have backbones are known as vertebrates, while the ones without a backbone are classified as invertebrates.
The structure that is unique to vertebrates is the backbone.
What are vertebrates?Vertebrate, also known as the Craniata. It is the type of animal where it should be predominant of subphylum. Moreover, it contains the backbones. The animal or the organism that have the backbones that we called as the vertebrates however the organism or animal that does not have any backbone is known as the invertebrates
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8. FOR BRAINLIST!!!
Genetic variation describes naturally occurring differences among individuals within
the same population or species. It is based on the differences in the alleles in the
gene pool in a population. These differences--
Answers
I think it's either b or c
how is the water cycle the driving process behind weathering erosion and deposition
Answers
1. The type of bond most likely to
occur between Mg and Br is a(n)
bond.
---
Answers
Answer:
Ionic bond.
Explanation:
Group 7 elements like Bromine (Br) and group 2 elements like Magnesium,(Mg) involved loss and gain of electrons which is typical with Ionic bonding.