Answer:
Quantitative and Qualitative :)
Explanation:
Do the following problem using significant figures
22.33 mL
+
55.666 mL +
0.001 mL
mL
Answer:
80.00 mL
Explanation:
Let's consider the following addition.
22.33 mL + 55.666 mL + 0.001 mL
22.33 mL has 4 significant figures.
55.666 mL has 5 significant figures.
0.001 mL has 1 significant figure.
For addition and subtraction, we look at the places to the decimal point. Add or subtract in the normal fashion, then round the answer to the least number of places to the decimal point of any number in the problem.
22.33 mL + 55.666 mL + 0.001 mL
77.997 mL ≈ 80.00 mL
what is described by the wavelength of a wave
Answer:
The answer is A
Explanation:
Wavelength is the distnce between the peak or crests in a wave.
The distance from one peak to the next peak is the wavelength. The correct option is A.
What is a wave?A wave is a dynamic disturbance (change from equilibrium) of one or more quantities that propagates.
The distance between identical points in abutting cycles of a waveform signal propagated in space or along a wire is defined as the wavelength.
Thus, the correct option is A.
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Whh is most carbon compound poor conductor of electricity
Explanation:
Most of the carbon compound are convalent in nature and all of the electrons participates in bond formation as such there is no free electrons left to conduct electricity. Moreover carbon compound doesn't readily dissociates to form ions, which conduct electricity. Hence carbon compound are poor conductor of electricity.
Answer:
It is because all the valence electrons are used to form covalent bonds. So, there will be no electrons left to flow the electric current through them.
Explanation:
hope it helps
Lab Safety
What should you do if a piece of lab
equipment is broken?
J. Try to fix it.
k. Tell a teacher immediately.
L. Pick up broken glass immediately
before anyone gets hurt.
M. Pretend like nothing happened.
Q3
Answer:
Tell a teacher immediately
Which best describes nitrogen fixation?
Answer:
Nitrogen fixation is the process of converting nitrogen to a usable form.
Describe 3 differences between ice, liquid water and steam.
Steam is a gas. ... The difference between a liquid and the other states of matter is that liquid molicules are more spread apart than solid molicules but less spread apart than gas molicues. Water is the base for both ice and steam.on:
The main difference between ice, liquid water, and steam is that ice is a solid, liquid water is a liquid, and steam is a gas.
What are the main difference between ice, liquid water, and steam?The first difference between ice, liquid water, and steam is that ice is solid, liquid water is liquid, and steam is gas.
The second difference between ice, liquid water, and steam is that ice is solid so the molecule of solid are closely packed and intermolecular space is negligible, liquid water is a liquid so the molecule are little far with each other and intermolecular space between molecules are more as compare to solid, and steam is gas so the molecule s are scattered freely and intermolecular space is very high as compare to solid and liquid.
The third difference between ice, liquid water, and steam is that 32°F is the freezing point of water, when temperature arises from 32°F water starts melting and converted from solid to liquid.
Therefore, the main difference between ice, liquid water, and steam is that ice is a solid, liquid water is a liquid, and steam is a gas.
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Calculate the density of a 38.6 g cube of gold with a volume of 2 cm³?
Answer:
Density, [tex]d=19.3\ g/cm^3[/tex]
Explanation:
Given that,
Mass of gold is 38.6 g
Volume, V = 2 cm³
We need to find the density of gold cube. The density of an object is defined as how much mass it has divided by its volume. So,
[tex]d=\dfrac{38.6\ g}{2\ cm^3}\\\\d=19.3\ g/cm^3[/tex]
So, the density of the cube of gold is [tex]19.3\ g/cm^3[/tex].
What is the coefficient of hydrogen, H 2, when the following equation is balanced? Al + H 2SO 4 → Al 2(SO 4) 3 + ? H 2
Answer:
3
Explanation:
Balancing the equation:
Original equation: Al + H2SO4 → AL2(SO4)3 + H2
We see that in aluminum in AL2(SO4)3 there is a subscript 2.
We put a 2 in the front of the reactant Al.
We also see a subscript 3 behind (SO4).
We add a 3 in front of H2SO4.
Now we have to balance the H2 on both sides. We add a 3 in front of the H2 on the right as there is 3 H2 molecules on the left.
2Al + 3H2SO4 → AL2(SO4)3 + 3H2
I hope it helps :)
The coefficient of hydrogen is 3
How do find the coefficient of hydrogen?The numbers placed in front of formulas to balance equations are called coefficients, and they multiply all the atoms in a formula.
Balancing the equation:
Given, the equation: Al + H2SO4 → AL2(SO4)3 + H2
We see that in aluminum in AL2(SO4)3 there is a subscript 2.
We put a 2 in the front of the reactant Al.
We also see a subscript 3 behind (SO4).
We add a 3 in front of H2SO4.
Now we have to balance the H2 on both sides. We add a 3 in front of the H2 on the right as there are 3 H2 molecules on the left.
2Al + 3H2SO4 → AL2(SO4)3 + 3H2
A balanced equation is an equation for a chemical reaction in which the number of atoms for each element in the reaction and the total charge is the same for both the reactants and the products.
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9.1 x 10−13kg is equal to how many ng.
Answer:
.91 ng
Explanation:
So for the first one the conversion factor which is the first blank in your first question is (1/100) and the second blank which would be (74)(1/100) is 0.0174
The second one would have two conversion factors where the first blank would convert to grams, so the conversion factor for the first blank is (1000/1), then converting from grams to nano grams, whose conversion factor is (1,000,000,000/1).
So in general the second one is 9.1 x 10^-13 (1000/1) x (1,000,000,000/1) = .91 ng
Hope my explanation is easy to understand.- Ryan Brown indy
9.1 x 10-¹³ kg is equal to 0.91 nanograms (ng).
CONVERT MASS IN kg TO g
Kilograms and grams are both interconvertible units of mass. The conversion ratio of kg to grams is as follows:1000 grams = 1 kilogram
Hence, 9.1 x 10-¹³ kg is equal to (9.1 x 10-¹³ × 10³)= 9.1 x 10^(-13+3)
= 9.1 × 10-¹⁰ grams.
CONVERT MASS IN g TO ng
The conversion ratio of grams to nanograms (ng) is as follows:1gram = 1000000000 (10⁹) nanograms
Hence, 9.1 × 10-¹⁰ grams = 9.1 × 10-¹⁰ × 10⁹= 9.1 × 10^(-10 + 9)
= 9.1 × 10-¹
= 0.91 nanograms (ng).
Therefore, 9.1 x 10-¹³ kg is equal to 0.91 nanograms (ng).
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pls help
will give the brainliest!
Please answer correctly
Urgent!!!!
a)Green color appears.
Burning splint test tells us us that it is hydrogen gas.
b)[tex]Ni+ H_2SO_4 \longrightarrow NiSO_4 + H_2 \uparrow[/tex]
c)There would be an effervescence. Upon passing the gas through lime water it turns milky $\implies$ gas is Carbon Dioxide.
d)$\NiCO_3+ H_2SO_4 \longrightarrow NiSO_4 + CO_2 +H_2O$
Does a basketball have positive or negative acceleration when it is thrown?
Answer:
The basketball has a constant negative acceleration due to gravity when it is thrown
Explanation:
Before the basket ball is thrown, and when the basket ball is in free fall flight it is always under and experiences an attractive force between the Earth and all objects on Earth known as gravitational force such that the direction of the acceleration of the gravitational force is always towards the Earth and therefore, downwards, resulting in an increasing decreased upward speed of the thrown ball in the projectile motion, equivalent to the ball having a negative acceleration, same as all objects in free fall.
Write the steps to separate the
Water from salt solution
Answer:
try use distillation
you also can get the salt by evaporate them under the sun
The diagram illustrates a type of plate boundary. Which crustal feature is most likely to form at this type of
boundary?
1. trench
2. ridges
3. tsunami
4. earthquake
1. What is the volume of 4.62 g of mercury? The density of mercury is 13.5 g/cm?
Answer:
The answer is
0.34 cm³Explanation:
The denisty of a substance can be found by using the formula
[tex]Density(\rho) = \frac{mass}{volume} [/tex]Making volume the subject we have
[tex]volume = \frac{mass}{Density} [/tex]From the question
mass = 4.62 g
Density = 13.5 g/cm³
Substitute the values into the above formula and solve for the volume
That's
[tex]volume = \frac{4.62}{13.5} [/tex]= 0.34222……
We have the final answer as
0.34 cm³Hope this helps you
what is the product of aluminum +zinc sulfate solution
Answer:
ZINC ALUMINATE
A 1.0 mole pure sample of molten tin is dissolved in a 5.0 mole pure sample of molten copper. The solution is set aside to cool and solidify. The atomic radius of tin is 140 pm and the atomic radius of copper is 128 pm. a. Identify the type of alloy that is formed. Justify your answer. b. Identify the solvent in this solution. Justify your answer.
Answer:
a. Bronze
b. Copper
Explanation:
a. The alloy formed from the mixture of molten tin and molten copper, with copper having the over triple of the quantity of tin, is bronze. Although, these two metals are often not the only metals present in bronze.
b. The solvent in this mixture is molten copper. This is because, it has the larger percentage of the constituents and hence can easily allow other constituents to be dissolved in it.
The characteristics of the mixtures allow to find the answers to this question about bronze are:
We have a homogeneous solution The solute is tin and the solvent is copper
In chemistry when materials do not react with each other, a new compound is not formed, therefore there is a mixture of unreacted elements.
The mixture is the union of two or more components united, but that do not react chemically, we can have two types of mixture:
Homogeneous. In this case the materials cannot be distinguished from each other, this special case is called a solution. Heterogeneous. There is a heterogeneous composition that can be distinguished. The parts of can be separated by physical methods, for example: deposition in time, filtration, etc.
In mixtures, the material that is in less quantity is called solute and the material that is in greater quantity is called solvent.
In this case we have a combination of Tin and Copper, by heating when they are taken to the liquid state the mixture is formed, the result is a material where no phase or separation can be distinguished, therefore we are in the presence of a homogeneous solution, that cooling would be a solid solution.
Therefore, copper and tin maintain their chemical properties, but the physical properties are altered, this solution is widely used industrially and is called Bronze.
We have 1 mole of tin and 5 moles of Copper, so the solute is the material in the least amount of Tin and the solvent is the material in the greatest amount of Copper.
In conclusion, using the characteristics of the mixtures we can find the answer to this question about bronze:
We have a homogeneous solution in solid state The solute is tin and the solvent is copper
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Calculate the number of grams of sulfuric acid in 1 gallon of battery acid if the solution has a density of 1.30 g/mL and is 38.8 % sulfuric acid by mass.
Answer:
The number of grams of sulfuric acid in 1 gallon of battery acid is 1909.4 g.
Explanation:
We have:
V = 1 gallon = 3785.4 mL
% m/m = 38.8 %
The number of grams of sulfuric acid can be calculated as follows:
[tex] m = 1.30 \frac{g}{mL}*3785.4 mL*\frac{38.8}{100} = 1909.4 g [/tex]
Hence, the number of grams of sulfuric acid in 1 gallon of battery acid is 1909.4 g.
I hope it helps you!
A sample of gasoline contains various hydrocarbons, which comprise atoms of carbon, hydrogen, and oxygen. The hydrocarbons mix together uniformly to form gasoline. Which term or terms could be used to describe this sample of gasoline
Answer:
mixture homogenous mixture (of hydrocarbons)compoundExplanation:
Mixture can be easily separated by physical methods. Homogeneity and heterogeneity of a mixture is determined by whether the components there in are in a single phase and evenly distributed or not.
A solution has a solute evenly dissolved in solvent to form a liquid substance.
An element is the basic form of substance which cannot be broke down into any other simpler unit.
I hope this was helpful.
Which is NOT one of the 3 dimensions of the Science Standards
Framework?
3 dimensions of the science standards framework
Answer:
The term "three-dimensional learning" refers to the three pillars that support each standard, now called "performance expectations." These three dimensions are: Science and Engineering Practices, Crosscutting Concepts, and Disciplinary Core Ideas. You can use this rubric to evaluate your own curriculum for NGSS.
Explanation:I HOPE IT HELP
Write a simple procedure for measuring out 2.6 grams of sodium bicarbonate NaHCO3 or commonly known as baking soda?
PLEASE I REALLY NEED THIS!!! :/
Answer:
See explanation
Explanation:
Since baking soda is a solid, all we need is to have a spatula, a filter paper and a triple beam balance.
The triple beam balance is set at zero and the filter paper us placed on the triple beam balance. This is the ensure that the mass of the filter paper is recorded as zero gram.
The triple beam balance is now adjusted to 2.6 g and sodium bicarbonate is added to the filter paper on top of the beam balance using a spatula. The 2.6g mass is the point when the pointer of the triple beam balance focuses at the zero mark.
What is the speed of a man that travels 2 meters in 6.5 seconds?
Answer:
0.305556 m / s
Explanation:
Speed = distance / time
2 metres = 0.002 km
6.5 sec = 0.00180556 hrs
Therefore,
Speed = 0.002 / 0.00180556
= 1.1 km / hr
= 0.305556 m / s
≈ 0.31 m/s
Explanation:v = d/t
= 2m/6.5s
= 0.3079 m/s
≈ 0.31 m/s
HELP ASAP
A pure sample of gold has a volume of 25.0 cm and a mass of 483 g. What is the density of gold?
0 cm
0.0514 g/cm3
0.00197 g/cm
19.4 g/cm
508 g/cm3
Answer:
the correct answer is D
Explanation:
The density of gold is 19.4g/cm
The density of gold is found to be 19.32 g/[tex]cm^3[/tex] when it has a volume of 25.0 cm and a mass of 483 g.
What is density?Density may be defined as a type of physical quantity that describes the mass per unit volume of any substance. The formula for density is d = M/V, where d is density, M is mass, and V is volume. It is commonly expressed in units of grams per cubic centimeter.
It is a word we use to describe how much space an object or substance takes up (its volume) in relation to the amount of matter in that object or substance (it's mass).
Another way to put it is that density is the amount of mass per unit of volume. If an object is heavy and compact, it has a high density.
According to the context of this question,
The mass of gold = 483 g
The volume of a pure sample of gold = 25.0 cm.
The formula for calculating density is as follows:
Density = Mass/Volume.= 483g/25.0 cm = 19.32 g/[tex]cm^3[/tex].
Therefore, the density of gold is found to be 19.32 g/[tex]cm^3[/tex] when it has a volume of 25.0 cm and a mass of 483 g.
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The density of osmium ( the densest metal) is 22.57 g/cm^3. What volume would be occupied by 1.50 kg of osmium.
Answer:
Density = Mass / Volume
V = 1.00 * 4.00 * 2.50 = 10 cm³
22.57 g/cm³ = Mass / 10 cm³
M = 22.57 g/cm³ * 10 cm³
M = 225.7 g
Answer: The mass of the block of osmium is 225.7 g.
Explanation:
Thanks to:
HomertheGenius
The density of the osmium is 22.57 g/cm^3 the volume would be occupied by 1.50 kg of osmium will be 33.85 ml.
What is density?The density of a substance is the division of mass of the given substance and the volume of the given substance and its unit will be centimeter cube and it cannot be effect by the temperature.
The density can be calculated by the formula
Density = mass of substance / volume of substance in liter
Density = 22.57 g/cm³
mass = 1.50 kg
Substituting the value in the equation,
22.57 g/cm³ = 1.50 kg / volume
Volume = 22.75 g/cm³ × 1.50 kg
volume = 33.85 ml
Therefore, density of the osmium is 22.57 g/cm^3 the volume would be occupied by 1.50 kg of osmium will be 33.85 ml.
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Which sig figs rule(s) apply in determining how many sig figs are in the number below?
Select all that apply.
92.064
5
Rule #4
Rule #2
Rule #3
Rule #1
Rule #5
Explanation:
For 92.064 the rule that is applied is all digits between two non-zero digits are significant.
For 5, the rule is all non-zero digits are significant
A substance is composed of only one kind of Adam and can't be separated into simpler substances are converted into it another substance by chemical processes
Answer:
Element
Explanation:
An element is substance that is composed of only one kind of atom and can not be separated into simpler substances or converted into another substance by chemical processes.
Chemical elements are found in the periodic table. Examples of chemical elements include; sodium potassium, phosphorus, hydrogen etc.
How many minutes are in 2.25 weeks ?
Answer:
22,680
Explanation:
you multiply the time value by 10080
How might you measure the amount of energy in the world's largest rice cake?
Answer:
When you eat the largest rice cake in the world, you increase how many kilograms and multiply by 7,700 will get the energy of the cake.
Explanation: one kilo=7.700 calories
1. What are the subatomic particles that all atoms are made of?
*
Answer:
The three main subatomic particles that form an atom are protons, neutrons, and electrons.
In Chemistry, a group of students have been presented with 2 test tubes. In both test tubes they observed bubbles rising up in a clear liquid. They are told that hydrogen gas has been produced in one test tube, while carbon dioxide was produced in the other. During this test they have been instructed to collect the gases from each reaction and identify them. How could the students collect and identify the hydrogen gas?
Answer:
Diatomic, or two atoms per molecule, hydrogen can be isolated by electrically separating distilled water. This process is known as electrolysis and creates oxygen gas as well. It is by far the easiest and safest way to collect and store hydrogen gas
Explanation:
im not sure this the correct answer but here u go
4. Isotonic solution are the solution
having same
1. Concentration
2. surface tension
3. osmotic pressure.
4. viscosity
Answer:
My answer is concentration.