Answers
Answer:
All answers given in the photo
Related Questions
What is the mass of a 2.5 mole sample of MgO2
Answers
m = n x Mr
m = 2.5 mol x (24 + [16 x 2])
m = 140g
Which of the following is true about the mass of atoms?
А
An individual atom has no mass.
B
The atom of every element has a unique mass.
С
The mass of an atom increases with temperature,
D
The mass of an atom varies over time
Answers
Answer:
i think the answer is C , atom mass increases with temperature
why is it important to use compound fixative in histology
Answers
Answer:
To prevent autolysis (enzymes attack) as well as putrefaction (bacterial attack) of tissues.
_265Hs--->_16O+_9Be=_____?
Answers
Answer:
265hs+24.464536b+16o
Explanation:
265hs+16o+9b(2.718282)
=265hs+16o+24.464536b
=265hs+24.464536b+16o
Which of the compounds, C4H10, BaSO4, Zn(CN)2, Al(OH)3, contain an anion with a -1 charge?
Answers
Answer:
b
Explanation:
OH and CN both have -1 charges
You have a block of an unknown metal. Which properties would be most helpful in determining what it is? If it could be
Answers
The lab stockroom has a bottle of Sulfuric acid labeled 15.5M. How many mL of water will you need to add to 5.41mL of the acid solution in order to get a concentration of 0.175M?
Answers
The volume of water needed to make the solution is 473.76 mL
We'll begin by calculating the volume of the diluted solution.
Molarity of stock solution (M₁) = 15.5 MVolume of stock solution needed (V₁) = 5.41 mL Molarity of diluted solution (M₂) = 0.175 MVolume of diluted solution (V₂) =?M₁V₁ = M₂V₂
15.5 × 5.41 = 0.175 × V₂
83.855 = 0.175 × V₂
Divide both side by 0.175
V₂ = 83.855 / 0.175
V₂ = 479.17 mL
Finally, we shall determine the volume of water needed.
Volume of stock solution needed (V₁) = 5.41 mLVolume of diluted solution (V₂) = 479.17 mLVolume of water =?Volume of water = V₂ – V₁
Volume of water = 479.17 – 5.41
Volume of water = 473.76 mL
Therefore, the volume of the water needed is 473.76 mL
Learn more about dilution: https://brainly.com/question/16167657
The results of Rutherford's gold foil experiment gave him the evidence to conclude that the center of an atom was A) called the nucleus. B) neutral and relatively small. C) positively charged and relatively small. D) a densely packed area containing both positive and negative particles.
Answers
Answer:
c)
Explanation:
because alpha particles can go through it
Seeds Roots Cones Stem Spores Leaves 1. Mongo 2. Moss 3. Ferns 4. Pine Tree 5. Guava 6. Mango 7. Coconut 8. Katakataka 9. Potato 10. Okra 14
Answers
The method of propagation of the given organisms is shown below:
1. Mongo ---> seeds
2. Moss ---> spores
3. Ferns ---> stem
4. Pine Tree ---> cones
5. Guava ---> seeds
6. Mango ---> seeds
7. Coconut ---> seeds
8. Katakataka ---> leaves
9. Potato ---> stem
10. Okra ---> seeds
Definition of reproductionRepr0duction is the process by which living organisms produce young ones of their kind.
Repr0duction can either involve two parents through the joining of male and female gametes to produce a zygote i.e. seeds in plants and embryo in animals or can involve only one parent and occurs through vegetative parts such as roots, stem, or leaves.
List of organisms and their propagation partsThe table below gives organisms and their propagation parts:
1. Mongo ---> seed
2. Moss ---> spores
3. Ferns ---> stem
4. Pine Tree ---> cones
5. Guava ---> seeds
6. Mango ---> seeds
7. Coconut ---> seeds
8. Katakataka ---> leaves
9. Potato ---> stem
10. Okra ---> seeds
Learn more about propagation and repr0duction at: https://brainly.com/question/13876478
How Does being a doormat help a tree survive winter
Answers
Answer: Trees, like all plants, are alive and require nutrients to survive. ... This dormancy is what allows trees to survive the cold winter. During dormancy, a tree's metabolism, energy consumption, and growth all slow down significantly in order to endure the harsh season of winter when water and sunlight are more scarce
Explanation: mark me brainlest plz if this helped only !
Heart, 5 stars, and Brainiest if right! Answer needed ASAP PLEASE!What type of forces do not change the motion of an object?
A. Acceleration forces
B. Balanced forces
C. Inertia forces
D. Unbalanced forces
Answers
Answer:
unbalanced force
Explanation:
pls mark me brainliest
Answer:
B. balanced forces
Explanation:
the motion of an object will not change if the forces pushing or pulling the object are balanced
The store paid 4.50 for a book and sold it for $7.65.what is the profit as a percent of the cost to the store? A. 3. 15% b. 58.8% c. 70% d. 315%
Answers
Answer: This would be C.) 70%
Explanation:
which is the compound that has the higher boiling point and explain why we see the
differences we do
a. ethane vs. ethene
b. heptyne vs. pentyne
c. octane vs. octanal
thanks!
Answers
Answer:
b I think it is the correct answer
All of the following compounds are soluble in water EXCEPT
a
MgSO4
b
Ca(NO3)2
с
Agi
d
K2CO3
Answers
Answer:
Anser is C Agl
Explanation:
Agl does not dissolve in water.
All of the following compounds are soluble in water except AgI because of very high value of lattice energy. Therefore, the correct option is option C.
The capacity of a material, the solute, to combine with a different material, the solvent, is known as solubility in chemistry. Insolubility, or the solute's inability to create such a solution, is the opposite attribute. The concentration for the solute within a saturated solution—a solution where no more of the substance can be dissolved—is typically used to gauge the degree of a substance's solubility in a particular solvent. The two compounds are considered to be at the point of solubility equilibrium at this time. All of the following compounds are soluble in water except AgI because of very high value of lattice energy.
Therefore, the correct option is option C.
To know more about lattice energy, here:
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how much sucrose can dissolve in 200g of water at 70 °C?
Answers
The maximum amount of a substance that can be dissolved in a solvent at a given temperature is referred to as its solubility.
Sucrose has a solubility of 320 g/100 g H2O at 70°C.
How is solubility usually measured?The equilibration of a suspension followed by an assessment of the solution composition, from which the solution concentration can be determined, is a widely accepted and accurate method for measuring solubility.The maximum amount of a substance that can be dissolved in a solvent at a given temperature is referred to as its solubility. This type of solution is known as saturated. To calculate the solubility in g/100g, divide the mass of the compound by the mass of the solvent and multiply by 100 g.The ability of a compound to dissolve in a liquid that functions as a solvent aids in the determination of the solubility test. The tests are critical because they determine the polarity of unknown compounds.Sucrose has a solubility of 320 g/100 g H2O at 70°C.
To learn more about : solubility.
Ref : https://brainly.com/question/23946616
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A quantity of 1.922 g of methanol (CH3OH) was burned in a constant-volume bomb calorimeter. Consequently, the temperature of the water rose by 4.20 Ce … lsius. If the heat capacity of the bomb plus water was 10.4 kJ/degree Celsius, calculate the molar heat of combustion of methanol
Answers
The formula for calculating the amount of energy or heat released is:
ΔH = C ΔT
where ΔH is heat of combustion, C is heat capacity, while ΔT is change in temperature
ΔH = 8.69 kJ / °C * (5.14°C)
ΔH = 44.67 kJ
Then we calculate the moles of CH3OH which has molar mass of 32.04 g/mol:
moles = 1.922 / 32.04 = 0.05999 mol
SO the molar heat of combustion is:
ΔHm = 44.67 kJ / 0.0599875 mol
ΔHm = 744.60 kJ / mol
Explain why aluminum does not react with potassium nitrate (KNO3) although it reacts with copper nitrate
Answers
Answer:
Potassium is more reactive than aluminium, so no reaction takes place. But aluminium is more reactive than copper, so it replaces the copper in copper nitrate
Explanation:More reactive metal compound + less reactive metal
-> no reaction
However
Less reactive metal compound + more reactive metal
-> more reactive metal compound + less reactive metal
This is called substitution reaction where the more reactive metal replaces the less reactive metal in the compound.
1. Which of the following shows the process of freezing?'
A.candle wax cooling on the table
B.pouring cola over ice
C.heating a cup of water
D.particles are speeding-up and colliding more
Answers
Why is the same type of nail used in all test tubes? in every experiment done to show how rusting works and in what conditions.
Answers
in test tube 1 iron nail gets both air and moisture which is required for rusting. ... in the test tube 3 iron nail is not rusted because of the calcium chloride which is moisture absorber. hence nail would not get moisture for the rusting.
How do many types of cells, like bacteria, reproduce?
Answers
Answer:
cells like bacteria are bisexual so they split and their offspring is 100 percent like the parent and this process happens over and over
Explanation:
What is the pH of a solution with a 3.2 x 10−5 M hydronium ion concentration? (5 points)
Select one:
a.4.3
b.4.5
c.11
d.12
Answers
I looked it up
Answer:
b. 4.5
Explanation:
Since it is hydronium ion concentration, that means it is an acid.
pH formula = -log[H3O+]
-log(3.2 x 10^{-5} = 4.5
what will happen to a person who doesn't recognize authors and even citing proper sources?
Answers
it will be called verbatim plagiarism, also called direct plagiarism
In general, people of __ heritage will be the last to get
white hair.
Answers
Answer:
African?
Explanation:
Could a single person or animal be a point source pollution
Answers
Answer:
the main cause of pollution is mankinds work like gases and extreme heat caused by factories and cars and littering is also caused by people's careless throwing away so In term man kind is responsible for the pollution
Explanation:
Which molecule does not obey the Octate rule of valence electrons .
BeCl2
FeCl2
CuCl2
ZnCl2
Answers
Explanation:
Which molecule does not obey the Octate rule of valence electrons .
BeCl2
FeCl2
CuCl2
ZnCl2
→BeCl2
Explaination:
BeCl2 violates the octet rule because the boron should be in a suitable valence state such that it binds to 3 chlorines. However, in this molecule boron is associated with six electrons.
Answer:
BeCl2
Explanation:
hope Its useful for you
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Carbon has a half-life of 5,730 years and you found a fossil with 4 atoms of Carbon and 12 atoms of
Nitrogen, how old would it be?
a. 0 years old
b. 5,730 years old
c. 11,460 years old
d. 17,190 years old
Answers
Answer:
D. 17,190 years old
I need help with this question.
Answers
The London forces designated as A are much weaker than the dipole- dipole interaction designated as B.
The intermolecular forces are interactions that exists between molecules of a substance in a particular state of matter. The nature of intermolecular forces in a substance greatly affect the properties of the substance.
We can see that A represents weak London forces while B represents dipole - dipole interactions. The London forces are very much weaker than the dipole - dipole interactions.
Learn more intermolecular forces: https://brainly.com/question/17111432
4.
TRUE OR FALSE?
Frequency is how often a wave occurs in a given time period.
Group of answer choices
True
False
Answers
Answer:
The answer to this question is True
Choose the correct interpretation for the statement below:
"Relative atomic mass of T is 2"
A) The mass of one mole of T is two.
B) The mass of one T atom is double compared to the mass of one carbon-12 atom.
C)Mole ratio of T atom to 1/12 of carbon-12 atom is two.
D)The ratio of the mass of one T atom to 1/12 of the mass of one carbon-12 atom is two.
Answers
Answer:
b
Explanation:
4. The new element Plainsmenium (Pe) was discovered in 2005 by Monte E. Rey
(who will receive his Nobel Prize in Chemistry in the year 2012). It has
three isotopes: Pe-184 (24.60%), Pe-185 (11.20%), and Pe-188 (64.20%).
What is its average atomic mass?
Answers
This is my answer
Explanation:
p=m/v
where:. p=density
m=mass
v=volume
p=F/A = Lim ∆F / ∆A
1 ATM=14.7 psi
= 1.013x10⁶ d/cm²
1 bar=10⁶ d/cm²
=10⁵ N/m2
Hope it helps to you goodluck
I'm not sure but that's the answer of my notebook like my answer please