Answer:
Explanation:
2.52g/ 0.125L= 20.16M
the color of a mineral streak is often different than its color true or false
rain gauge non examples
Answer:
Explanation:
?? sorry but i do not get what u said
What does each daughter cell get from their parent cell?
A nickel is placed in a cup of boiling water. Predict whether a solution will form.
I really don’t know
A chemist prepares a solution of silver(I) perchlorate by measuring out of silver(I) perchlorate into a volumetric flask and filling the flask to the mark with water. Calculate the concentration in of the chemist's silver(I) perchlorate solution. Be sure your answer has the correct number of significant digits.
The question is incomplete, the complete question is;
A chemist prepares a solution of silver (I) perchlorate (AgCIO4) by measuring out 134.g of silver (I) perchlorate into a 50.ml volumetric flask and filling the flask to the mark with water. calculate the concentration in mol/L of the silver (I) perchlorate solution. Round your answer to 2 significant digits.
Answer:
13 mol/L
Explanation:
We must first obtain the number of moles of silver I perchlorate involved
Molar mass of silver I perchlorate = 207.32 g/mol
Number of moles of silver I perchlorate = 134g/207.32 g/mol = 0.646 moles
Recall that;
n =CV
C= concentration
V= volume
n = number of moles
C = n/V
C = 0.646 moles * 1000/50
C = 13 mol/L
Which statement describes an interaction between the biosphere and the atmosphere that is related to
photosynthesis?
• During photosynthesis, plant roots take in water from soil.
O During photosynthesis, plants take in carbon dioxide from the air.
O Through photosynthesis, energy stored in plants is released into the air.
O Through photosynthesis, energy stored in plants is transferred to humans who eat them
Answer:
O During photosynthesis, plants take in carbon dioxide from the air.
Answer: The answer is: During photosynthesis, plants take in carbon dioxide from the air.
Explanation: I have my ways ;>
How many atoms of which elements are represented by the following formula?
C6H12N
Answer:
19 atoms
Explanation:
6 carbon, 12 hydrogen, one Nitrogen
Which of the following is an example that a chemical reaction has occurred?
A. Cut piece of lumber into two pieces
B. Bubbling/fizzing
C. Phase change (ex. solid changes to liquid)
D. Iron being melted
Where is the main asteroid belt in the solar system?
Answer:
It's between Jupiter and Mars.Helppppppppppppppppppppppp
Answer:
B. Periodic electrons
An athlete can run 4 m/s. How far can she run in 3 minutes?
Answer:
720
Explanation:
4 m/s
60 seconds
= 180 seconds
3 minutes
4 m/s
= 720 m/s
180 seconds
Question 3 (0.05 points)
Fixed metals are metals in representative elements, plus three metals in transition
elements: Zn, Ag, Cd. Variable metals are metals in transition elements, except Zn,
Ag, and Cd. What is the different between the names of ionic compounds containing
fixed metal and those containing variable metals?
A) Ionic compounds containing variable metals should have Roman numerals
CD B) lonic compounds containing fixed metals should have prefixes
C) lonic compounds containing fixed metals should have Roman numerals
Pleaseeeeeee helppppppp
Answer:
A) Ionic compounds containing variable metals should have Roman numerals
Explanation:
The correct option is;
A) Ionic compounds containing variable metals should have Roman numerals
This is because these variable metals have variable oxidation states and charges. Hence, to be able to distinguish between compounds containing the same element but different charges, the roman numerals is used. For example;
FeCl₃ - Iron(III) Chloride
FeCl₂ - Iron(II) Chloride
Whose atomic theory explains how atoms emit (release) and absorb light?
O Bohr's
O Dalton's
O Rutherford's
O Thomson's
Answer:
Bohr's model of hydrogen atom
I hope this answer is correct
Answer:
Bohr's
Explanation:
What is berylium phosphide anion?
Answer:
Molecular Formula, Be3P2. Synonyms. Beryllium phosphide. Beryllium phosphide (BeP2). EINECS 261-137-1. 57620-29-8. 58127-61-0. Molecular Weight.
Molecular Formula: Be3P2
Molecular Weight: 88.98407 g/mol
Structure: Find Similar Structures
PubChem CID: 6453515
Explanation:
1 point
5. A drug or other chemical compound whose manufacture, distribution,
possession, and use is regulated by the legal system is referred to as a
poison.
a.poison
b. narcotic
c. toxin
d. controlled substance
I'm pretty sure its D because if it's manufactured and distributed its likely not toxin or poison. a narcotic could be a controlled substance so that's why I'm leaning towards D
How many moles is 17.6 g NaOH?
Answer: The answer is 39.99711.
Explanation:
How many grams NaOH in 1 mol? The answer is 39.99711.
We assume you are converting between grams NaOH and mole.
You can view more details on each measurement unit:
molecular weight of NaOH or mol
This compound is also known as Sodium Hydroxide.
The SI base unit for amount of substance is the mole.
1 grams NaOH is equal to 0.025001806380511 mole.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between grams NaOH and mole.
Type in your own numbers in the form to convert the units!
Convert another chemical substance
Convert grams
NaOH
to moles
Quick conversion chart of grams NaOH to mol
1 grams NaOH to mol = 0.025 mol
10 grams NaOH to mol = 0.25002 mol
20 grams NaOH to mol = 0.50004 mol
30 grams NaOH to mol = 0.75005 mol
40 grams NaOH to mol = 1.00007 mol
50 grams NaOH to mol = 1.25009 mol
100 grams NaOH to mol = 2.50018 mol
200 grams NaOH to mol = 5.00036 mol
True or False:
Houston, Texas received approximately 2 inches of snow on February 15, 2021. Based on this, we can now say Houston's climate consists of long, freezing winters and yearly snowfall. Please answer ASAP. Thanks
Answer:
False.
Explanation:
I majored in Chemistry
HELPHELPHELPHELPHELPHELPHELPHELPHELPHELPHELPHELPHELPHELPHELP
Answer:
Explanation:
In all, an estimated 8,000 to 10,000 Iraqi forces were killed, in comparison with only 300 coalition troops. Though the Gulf War was recognized as a decisive victory for the coalition, Kuwait and Iraq suffered enormous damage, and Saddam Hussein was not forced from power.
hope this helps a lot!
Which statement best describes how an electromagnetic motor works?
Electrons are moved through a magnet, creating a circuit. That circuit interacts with a current, moving the
conductor in the orientation of the field
Electrons are moved through a current, creating a circuit. That circuit interacts with a magnet, moving the
conductor in the onentation of the field.
Elections are moved through a circuit, creating a current That current interacts with a magnet, moving the
conductor in the orientation of the field
Electrons are moved through a magnet creating a current. That current interacts with a circuit, moving the
conductor in the onentation of the field
Answer:
electrons are moved through a magnet creating a current. the current instracts with a circuit, moving the conductor in the onentation of the field
Which of the following best describes the outcome of the cell division process meoisis?
Select one:
A. Meosis does not occur in reproductive cells.
B. The cells produced at the end of meiosis are genetically identical to the parent cell.
C. The cells produced at the end of meiosis contain half the number of chromosomes as the parent cell.
D. Cells only divide once during meiosis.
Answer:
Explanation: The answer is B. Because meiosis process produce genetically different, haploid cells. Also, meiosis basically happen to produce gametes. Gametes is haploid. So, the answer is B
Meiosis is a method for cell division taking place in some organisms. In meiosis the cell the cells produced at the end of meiosis contain half the number of chromosomes as the parent cell. Hence, option C is correct.
What is meiosis?meiosis is biological process by which the cell undergo division to produce genetically identical daughter cells. Other methods of cell divisions include mitosis, binary division, budding etc.
The first stage of meiosis includes pairing homologous chromosomes and they segregate to opposite ends of the meiotic spindle.This phase is known as reduction division where, the number of chromosome reduces to half.
This differentiated chromatids separates out in the second phase and yielding the haploid cells. Hence, in meiosis, the cells produced at the end of meiosis contain half the number of chromosomes as the parent cell.
To find more on meiosis, refer here:
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2. Explain in your own words what will happen to the chemical structure of aspirin when it is in solution at pH 1.0. Compare this to what will happen to the chemical structure of aspirin at pH 8.0. Highlight your answers by drawing appropriate chemical structures for aspirin at each of the pH values.
Answer:
don't sent such messages whatever you are
According to the concept of solubility and dissociation, aspirin at pH 8 and 10 undergoes dissociation to yield ions.
What are ions?
An ion is defined as an atom or a molecule which has a net electrical charge. There are 2 types of ions :1) cation 2) anion . The cation is the positively charged ion and anion is the negatively charged ion . As they are oppositely charged they attract each resulting in the formation of ionic bond.
Ions consisting of single atom are mono-atomic ions while which consists of two or more ions are called as poly-atomic ions . They are created by chemical interactions . They are very reactive in their gaseous state and rapidly react with oppositely charged ions resulting in neutral molecules.Ions are generated on dissociation.
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Please do not ignore, I don’t know how to find the last part so can you please explain it to me? I’m having trouble with that
Answer:
Neutral
Explanation:
U need to count the number of protons and electrons and see which has more...
Here the atom is neutral cause the electrons and protons are equal and cancell each other out.
I hope im right!!
Answer:
To find the overall charge subtract electrons from protons
So in this example its 0
Explanation:
4 Protons
4 electrons
so basically
+4-4=0
What is true about matter?
A. Matter has mass and takes up space.
B. Matter has mass but does not take up space.
O C. Matter takes up space but does not have mass.
O
D. Matter does not have mass or take up space.
Answer:
A
Explanation:
Matter is always anything that can take up space and in order for something you can touch (matter is tangible) It has to have mass.
camouflage
2. chemical warfare
3. commensalism
4. indicator species
5. interspecific competition
a relationship in which one
organism lives in or on another organism
and benefits from that relationship while
the host organism is harmed by it
those species that normally live
and thrive in a particular community
species that play critical roles in
their communities and help determine
the types and numbers of other species
in a community
association in which one organism
is benefited and the other organism is
neither benefited nor harmed
20
species that serve as early
warnings of damage to a community or
ecosystem
competition between species for
shared or limited resources
using chemical substances to kill or
injure predator or prey
species that migrate or are
deliberately introduced into a community
where they would not normally live
a relationship between two kinds
of organisms that benefits both
blending in with one's
surroundings
an adaptation in which an animalis
protected against predators by its
6. invasive
7. keystone species
8. mimicry
9. mutualism
10. native species
11 parasitism
Draw the structure of the product formed in the reaction of an epoxide with ethoxide ion. If more than one stereochemical product is possible, draw only one isomer.
Answer:
See explanation and image attached
Explanation:
The most common reaction of epoxide rings is the ring opening reaction. This ring opening reaction serves to relieve the stress in the ring.
Now, The first step in the acid catalysed epoxide ring opening reaction is the protonation of the epoxide.
This is now followed by the attack of the nucleophile. Subsequent deprotonation regenerates the acid catalyst and yields the product.
The structure of the product formed in the reaction of an epoxide with ethoxide ion is attached below as we get 2 substituted alcohol product.
What are epoxides?Epoxides are comes under the category of ether, which are the three membered ring structure.
Due to its ring structure, strain or stress is present in the three membered ring which makes it available to react easily with nucleophile. Ethoxide ion acts as a nucleophile in this reaction which attacks on the electrophilic carbon of the epoxide and resulting into the break up of bond and opening of ring.
As a result of this reaction we get the 2 substituted alcohol as attached in the image.
Hence structure of the product is attached below.
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Most of Earth's major earthquakes are caused by
x
seasonal heating and cooling of Earth's surface
B
x
weathering of rock at Earth's surface
C
x
earth's gravitational attraction to the Moon
D
x
faulting of rock in earth's crust
Answer:
d
When the stress on the edge overcomes the friction, there is an earthquake that releases energy in waves that travel through the earth's crust and cause the shaking that we feel.
Body Color is a ___________
Variation
Trait
Feature
Observation
Help plzzz I don’t get to
Write the formula of the conjugate base of the Brønsted-Lowry acid, HIO3
Answer:
Explanation:
A conjugate base of HIO3 is IO3– ion
The chemical formula of the conjugate base of the Bronsted Lowry acid HIO₃ can be represented as IO₃⁻.
What is Bronsted - Lowry acid and bases?According to Bronsted - Lowry theory, acid is a substance that donates a proton or H⁺ ion and forms its conjugate base while the base is a substance that accepts a proton or H⁺ ion and forms its conjugate acid.
Bronsted-Lowry acid donates a proton to the other compound and forms a conjugate base.
Acid ⇄ Conjugate base + Proton
If a conjugate base accepts a proton back then acid reforms.
The Bronsted-Lowry base is a substance that accepts a proton from other compounds.
Base + Proton ⇄ Conjugate acid
If a conjugated acid donates its proton then the base reforms.
The conjugate base of the Bronsted-Lowry acid HIO₃ is:
HIO₃ ⇄ H⁺ + IO₃⁻
Therefore, the conjugate base of the Bronsted-Lowry acid HIO₃ is IO₃⁻.
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Form hypothesis: Which factor(s) do you think determine whether the car breaks the egg?
The mass of the car only _____
The kinetic energy of the car ____
The speed of the car only ___
The momentum of the car ___
(GIZMOS)
