Explanation:
Because when you move the decimal point once, it it equal to 10 and to convert in the metric system, you must multiply or divide by 10. For example, when converting 4 centimeters to millimeters, you can multiply by 10 to get 40 millimeters or you can move the decimal point to the right and add another 0 to get 40.
Answer:
when you move tne decmal point it alwase ads up to ten
Explanation:
Unit for mass, volume and density
Answer:
kg, m^3, kg/m^3
Explanation:
the SI units for these are:
mass: kilogram
volume: cubic meter
density: kilogram per cubic meter
Which has the lowest pH?
water
baking soda
bleach vinegar
Answer:
c. baking soda
Explanation:
Which of the following elements would be expected to have the highest electronegativity?
1. As
2. Li
3. P
4. Al
5. Ge
Answer:
option (3) P is the correct answer.
Explanation:
electronegativity of As is 2.0
electronegativity of Li is 1.0
Electronegativity of P is 2.1
Electronegativity of Al is 1.5
electronegativity of Ge is 1.6
So P (phosphorus) would be expected to have highest electronegativity.
Electronegativity measures the Capability of an atom to pull the shared paired of electrons.
Electronegativity is determined by the following factors
nuclear charge.
the number and the location of different electrons inside the atomic shells.
Which is a feature of a single replacement reaction?
Substance XYZ breaks down into X and YZ.
Substance G reacts with compound XY to form GY and X.
Substance X burns rapidly in the presence of oxygen.
Substance QR and GT exchange ions with each other.
Answer:
Its B
Explanation:
Because im just built different
The statement featuring the single replacement reaction has been statement B.
The single replacement reaction has been defined as the reaction of the highly reactive element with the compounds, that results in the formation of the new compound with the replacement of the less reactive element.
The single replacement reaction can be given as:
G + XY [tex]\rightarrow[/tex] GY + X
In the reaction, G being more reactive than X has been able to displace X and forms bond with Y. Thus, statement featuring the single replacement reaction has been B.
For more information about the single replacement reaction, refer to the link:
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Aspirin is not as____
in water as sugar is.
Answer:Soluble
Explanation:Soluble:(of a substance) able to be dissolved, especially in water.
Which science is the study of living organisms? physics astronomy chemistry biology
Answer:
biology
Explanation:
biology is the study of living g things
Answer:
The answer you would be looking for is Biology
whats the meaning
Speed ?
and the
meaning of
of Motion?
5. The sphere shown below is placed in a full overflow cup and sinks to the bottom. How much water is displaced by the sphere?
4.6 cm
O A. 51.0 ml
OB. 66.5 ml
O C. 88.6 mL
O D.407.7 ml
Answer : The correct option is (A) 51.0 mL
Explanation :
As we know that water displaced is equal to the volume of sphere.
Now we have to determine the volume of sphere.
Formula used:
Volume of sphere = [tex]\frac{4}{3}\pi r^3[/tex]
where,
r = radius of sphere
Given:
Diameter of sphere = 4.6 cm
Radius of sphere = [tex]\frac{Diameter}{2}=\frac{4.6cm}{2}=2.3cm[/tex]
So,
Volume of sphere = [tex]\frac{4}{3}\times 3.14\times (2.3cm)^3[/tex]
Volume of sphere = [tex]50.94cm^3\approx 51.0 cm^3[/tex]
Water displaced = Volume of sphere = [tex]51.0 cm^3[/tex]
We know that:
[tex]1cm^3=1mL[/tex]
So,
Water displaced = 51.0 mL
Therefore, the correct option is (A) 51.0 mL
Answer:
A. 51.0 mL
Explanation:
i did this question in my quiz :)
Ionic crystals have high boiling points because:
A. They do not have high boiling points.
B. breaking ionic bonds requires a large amount of energy.
C. the structure has a large surface area to absorb heat quickly.
D. the positive and negative charges prevent them from absorbing heat quickly.
The answer would be B.
The size or strength of something, like a force.
Velocity
Acceleration
Magnitude
Direction
The size or strength of something like a force is acceleration. Thus, option b is correct.
What is force?
In general language we can say that push or pull is called force.
According,to newton second law of motion force is rate change of momentum it means
F= d/dt×(mxv)
Where m is mass and v is velocity
But in general case mass is constant.
So ,Force
F= mxd/dt×(v)
Since we know that rate change of velocity is acceleration.
Then we can say that
F= mass x acceleration
S.I unit of force is Newton
1 Newton = 1kg×m/sec^2.
Force and acceleration is a physical quantity which have both i.e magnitude and direct it means both are vector quantity. According,to newton second law of motion force is rate change of momentum it means
F= d/dt×(mxv)
Therefore, the size or strength of something like a force is acceleration. Thus, option b is correct.
Learn more about acceleration here:
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#SPJ6
Find the volume of an object with a density of 12.8 g/mL and a mass
of 123 g
Answer:
The answer is 9.60 mLExplanation:
The volume of a substance when given the density and mass can be found by using the formula
[tex]volume = \frac{mass}{density} \\[/tex]
From the question
mass = 123 g
density = 12.8 g/mL
We have
[tex]volume = \frac{123}{12.8} \\ = 9.609375...[/tex]
We have the final answer as
9.60 mLHope this helps you
Calculate the number of moles in 144 g of P.
Hope is testing a substance using blue litmus paper. The paper turns red. The substance is _____.
a neutral
an acid
a base
Answer:
the substance is an acid
How long does primary succession take? ty sm ily
WILL GIVE BRAINLEIST
For this assignment, you will develop a model that shows a roller coaster cart in four different positions on
a track. You will then use this model to discuss the changes in potential, kinetic, and thermal energy of
the cart as it moves along the track.
Answer:
This should help :)
Explanation:
The cart has a lot of potential energy, little kinetic energy, and little thermal energy when it is in position A. The kinetic energy and potential energy both rise as the cart moves towards position B, while the thermal energy rises as thermal energy from the track is transmitted to the cart through friction
What is Kinetic energy ?
Kinetic energy, which may be seen in the movement of an object, particle, or group of particles, is the energy of motion.
The cart has a lot of kinetic energy, little potential energy, and little thermal energy after it reaches position C. The cart has some thermal energy and a high potential energy at point D.
It also has a low kinetic energy. Gravity, momentum, and friction are all connected with potential energy, kinetic energy, and thermal energy, respectively.
Position A is when the potential energy is at its highest, and its kinetic energy is at its peak in position C and at its lowest in position A, whereas thermal energy is at its peak in position B and at its lowest in position A.
To learn more about Kinetic energy, refer to the below link:
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# SPJ2
An unknown compound containing tellurium and bromine is analyzed
and it is determined that 28.53% of the compound by mass is
composed of tellurium.
How many moles of Te are present in 100.00 g of the compound?
Answer:
The correct answer is 0.22 mol Te.
Explanation:
First, we have to calculate the mass of Te in the sample. We simply multiply the sample mass by the percentage of Te (28.53%= 28.53/100)
100.00 g x 28.53/100 = 28.53 g Te
The molar mass of Te is 127.60 g. Thus, the mass of 1 mol of Te is 127.60 g. With this, we calculate how many moles of Te there are in 28.53 g of Te:
28.53 g Te x 1 mol Te/127.60 g Te= 0.223 mol ≅ 0.22 mol
Why don't solids, liquids, and gases leave Earth's atmosphere? A) Only gases can leave the atmosphere. B) Matter on Earth is destroyed and recycled. C) Gravity keeps all matter on Earth.
Answer:
The answer is C) Gravity keeps all matter on Earth.
Explanation:
I took the test and this was correct!
(Not a fake answer like some, I promise!)
5) Which of these are intensive properties?
a substance has a volume of 5.4 mL
a substance has a mass of 1.25 g
a substance has a density of 4.13 g/cm3
a substance has a melting point of 40°C
a substance is very malleable (it can be hammered into a shape)
6) Which of these are extensive properties?
a substance has a melting point of 40°C
a substance is very malleable (it can be hammered into a shape)
a substance has a volume of 5.4 mL
a substance has a mass of 1.25 g
a substance has a density of 4.13 g/cm3
Answer:
For number 5 it is the 2nd one some stants has a mass of 1.25 g And the 2nd 1 number 6It is the 1st 1A subject has a melting point of 40
If a chemical reaction leaves you with a new
substance, what do you
think a physical
change/reaction will be?
Answer:
Explanation:
During a physical temperature change, one substance, such as water will be heated. Because one compound is mixed in with another. Therefore, these reactants produce a product. When the reactants are mixed, the temperature change caused by the reaction is an indicator of a chemical change.
Kinds of matter with label and example
Answer:
Liquid: water
Solid: Rocks
Gas: Air
Explanation:
Please help if you can !
Answer:
7630
Explanation:
eAnswer:
Explanation:
Math
1. The elements in a compound
a. Combine by reacting with each other
b. Join in a specific ratio
c. Can be separated using chemical means
d. All of the above
Answer:
d.All of the above
Explanation:
They can do all of the above
Sort each of the following elements by effective nuclear charge, Zeff, from smallest to largest:
Sn, Rb, Sb, In, and Sr
Answer:
Rb = +1 , Sr = +2, In= +3, Sn = +4, Sb= +5
Explanation:
Formula:
Zeff = Z - S
Z = atomic number
S = number of core shell or inner shell electrons
For Sn:
Electronic configuration:
Sn₅₀ = [Kr] 4d¹⁰ 5s² 5p²
Zeff = Z - S
Zeff = 50 - 46
Zeff = +4
For Rb:
Electronic configuration:
Rb₃₇ = [Kr] 5s¹
Zeff = Z - S
Zeff = 37 - 36
Zeff = +1
For Sb:
Electronic configuration:
Sb₅₁ = [Kr] 4d¹⁰ 5s² 5p³
Zeff = Z - S
Zeff = 51 - 46
Zeff = +5
For In:
Electronic configuration:
In₄₉ = [Kr] 4d¹⁰ 5s² 5p¹
Zeff = Z - S
Zeff = 49 - 46
Zeff = +3
For Sr:
Electronic configuration:
Sr₃₈= [Kr] 5s²
Zeff = Z - S
Zeff = 38 - 36
Zeff = +2
Electronegativity and ionization energy __________ from left to right within a period and __________ from top to
bottom within a group.
Answer:
C, increases/decreases
Explanation:
As you move down a group on the periodic table, the electronegativity of an element decreases because the increased number of energy levels puts the outer electrons very far away from the pull of the nucleus.
How many atoms are in 3.2 pg of Ca? The molar mass of Ca is 40.08
g/mol.
Answer:
4.81×10¹⁰ atoms.
Explanation:
We'll begin by converting 3.2 pg to Ca to grams (g). This can be obtained as follow:
1 pg = 1×10¯¹² g
Therefore,
3.2 pg = 3.2 pg × 1×10¯¹² g / 1 pg
3.2 pg = 3.2×10¯¹² g
Therefore, 3.2 pg is equivalent to 3.2×10¯¹² g
Next, we shall determine the number of mole in 3.2×10¯¹² g of Ca. This can be obtained as follow:
Mass of Ca = 3.2×10¯¹² g
Molar mass of Ca = 40.08 g/mol
Mole of ca=.?
Mole = mass /molar mass
Mole of Ca = 3.2×10¯¹² / 40.08
Mole of Ca = 7.98×10¯¹⁴ mole.
Finally, we shall determine the number of atoms present in 7.98×10¯¹⁴ mole of Ca. This can be obtained as illustrated below:
From Avogadro's hypothesis,
1 mole of Ca contains 6.02×10²³ atoms.
Therefore, 7.98×10¯¹⁴ mole of Ca will contain = 7.98×10¯¹⁴ × 6.02×10²³ = 4.81×10¹⁰ atoms.
Therefore, 3.2 pg of Ca contains 4.81×10¹⁰ atoms.
What do we mean when we say a substance is "pure"?
Answer:
A pure substance is a substance that is only made up of atoms of one element and so it has fixed melting and boiling points.
Mintu wants to increase the heat transfer between a metal iron and another piece of metal he wants to shape. He decides to increase the time the two metals are in contact, use a larger metal iron, and use a new metal material with a higher specific heat.
Where is Mintu's error?
Answer:
Mintu should chosen a material with a lower specific heat
Explanation:
I got the answer right on the test trust me it is correct
Which of the following describes a nonmetal
A:brittle shiny and solid at room temperature
B:brittle dull and low density
C:malleable shiny and able to conduct electricity
D:malleable dull and solid liquid or gas at room temperature
Answer:
b is the answer
Explanation:
non metals are not shiny, brittle, unmalleable, and are poor conductors of thermal energy and electrical current.
A nonmetal is brittle, dull, and low in density.
• Non-metals refer to the elements that produce negative ions by gaining or accepting electrons. The non-metals generally possess 4, 5, 6, or 7 electrons in their valence shell. The non-metals are those, which are devoid of all the metallic properties.
• The non-metals in their solids-state are brittle, thus, they lack ductility and malleability exhibited by the metals.
• The non-metals are not shiny like metals, they are dull in color.
• The non-metals seem to possess low density, primarily as non-metals seem to prevail either in a liquid or solid-state. The non-metals lack the dense and closed packing in the lattice, which is seen in metals.
Thus, non-metals are brittle, dull, and low in density.
To know more about:
https://brainly.com/question/17811524
What do organs combine to form? organ systems cells tissues organisms
Answer:
the answer is {organisms}
Answer:
organisms
Explanation: I took the test
How many grams of chloride are there in 256 g of magnesium chloride?
Given :
Mass of given magnesium chloride, m = 256 g.
To Find :
How many grams of chloride are there in 256 g of magnesium chloride.
Solution :
Molecular formula of magnesium chloride is [tex]MgCl_2[/tex].
Molecular formula of [tex]MgCl_2[/tex] is, M = 95.211 g/mol .
Mass of chlorine in 1 mol of [tex]MgCl_2[/tex] is , m = 35.5 × 2 = 71 g.
So, amount of chlorine in 256 gram [tex]MgCl_2[/tex] :
[tex]m =\dfrac{71\times 256}{95.211}\\\\m = 190.90\ g[/tex]
Hence, this is the required solution.
