Answer:
Greater impact
Explanation:
Not only will it have a greater impact, but it will also have a greater risk of permanently deforming since the impact force can overcome the elastic modulus of the material and thus suffer permanent damage.
A car traveled 210 km in 3.5 hours. What was its average speed in km per hour?
OA. 60
OB. 70
OC. 40
OD. 75
Answer:
A) 60
Explanation:
Given data:
Distance traveled by car = 210 km
Time taken = 3.5 hour
Speed of car = ?
Solution:
Formula:
S = d/t
s = speed of car
d = distance
t = time
by putting values,
s = 210 km / 3.5 hour
s = 60 km/hour
Kinetic energy is energy of motion. What below is considered to be a form of kinetic energy?
Answer:
In physics, the kinetic energy of an object is the energy that it possesses due to its motion It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity Having gained this energy during its acceleration the body maintains this kinetic energy unless its speed changes
Example:
A semi-truck travelling down the road
A river flowing at a certain speed
Radars can help meteorologists detect clouds and sailors detect submarines. Radars send out radio waves and record their echoes after the radio waves reflect off an object. Two radars send out radio waves
with the same frequency. The first radar sends radio waves through the air. The second radar sends radio waves through the ocean. What is true about these radio waves?
Answer:
D
Explanation:
Same Wavelength. Also cause i did the test
Answer:
They have the same wavelenght
Explanation:
Which is an important function of lipids in the body?
provide the body with energy and fiber
provide the body with vitamins and bile salts
provide the building blocks for muscle tissue
provide control of substances going into and out of cells
Answer:
One of the main functions lipids do is storing energy.
provide the building blocks for muscle tissue
Answer:
c
Explanation:
edge
is solid iron pallets that are melted and drawn into wires is that chemical reaction
Answer:
It is not true that this is an example of a chemical reaction. This is a typical example of physical reaction.
Most physical changes are often phase changes.
A phase change is a change in the physical state of a body.
In this change, it is from solid to liquid.
Now new substances are formed.
When substances are changed from one form to another, it is a physical change.
In a chemical change, a new substance is formed at the end of the process.
Explanation:
yess of course
if you study the steps of melting the iron and makes the ores pure, you will know that there's many reaction happen to convert to wires
due fan 22 at 2.30pm
10
This is a traded discussion 100 points possible
Rules Governing Electron Configurations
List and describe in your own words and in grammatically correct sentences, the rules that gover the manner in which electrons fill the energy levels around the nucleus of an atom, Explain
why there are exceptions to these rules and provide at least one example,
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10:56 AM
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Answer:
im not sure but i do know you have to look under 5.2
Explanation:
cal the vol of carbon(ii)oxide produced at stp by. d dehydration of 6.00g of methanoic acid with concentrated H2SO4 (carbon =2oxygen=16 hydrogen=1 molar volume = 22.4dmcube pleeeeeeeeese I really need it a lot
The volume of CO= 2.912 L
Further explanationGiven
Dehydration of 6 g of methanoic acid with H2SO4
Required
The volume of CO
Solution
Reaction
HCOOH ⇒ CO+H₂O
MW = 1.Ar C+2.Ar H+2.Ar O
MW = 1.12+2.1+2.16
MW= 46 g/mol
mol = mass : MW
mol = 6 g : 46 g/mol
mol = 0.13
From equation, mol ratio HCOOH : CO, so mol CO = 0.13
Vm = 22.4 L
so for 0.13 mol :
= 0.13 x 22.4 L
= 2.912 L
Find the density of an object that has a mass of 66 g and a volume of 10 cm?
a.)660 g
b.)6.6 g/cm^3
c.)0.15 cm 3/g
d.)6.6 cm 3/g
Answer:
B
Explanation:
Density = mass / volume
66 grams / 10 cm = 6.6 g per cubic cm
What are the coefficients that would correctly balance this equation? ____Zn + ____K₂CrO₄→ ____K + ____ZnCrO₄
Answer:
Zn + K2CrO4 -----> 2K + ZnCrO4
Explanation:
What kind of reaction is this
Na2O + CO2 → Na2CO3
Answer:
Explanation:
Na 2O + CO 2 → Na 2CO. 3
This is an acid-base reaction (neutralization): Na 2O is a base, CO 2 is an acid.
Hope this helps!!!!!!
Brainlist please
The reaction of N₂O with CO₂ giving Na₂CO₃ is a combination reaction, where two reactants combines to form a product.
What are types of reactions?There are different kinds of reactions namely, displacement reactions, combination reactions, decomposition reaction etc.
The reaction in which one reactant species displace the constituent group of another reactant it is termed as displacement reactions. On decomposition reaction, one reactant decomposes into two or more products.
In a single displacement reaction, one of the group is displaced to form a new product and in double displacement reactions, two species from reactant side are displaced.
Similarly, a reaction in which two reactants simply combines to form a product is termed as combination reaction.
Therefore, the type of the given reaction is combination.
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Na2CO3(aq) + CaCl2(aq) — 2 NaCl(aq) + CaCO3(s)
Calculate the volume (in mL) of 0.200 M CaCl, needed to produce 2.00 g of CaCO3(s). There is an excess of Na2CO3.
Molar mass of calcium carbonate = 100.09 g/mol
Answer:
100 mL
Explanation:
Given data:
Mass of CaCO₃ produced = 2.00 g
Molarity of CaCl₂ = 0.200 M
Volume of CaCl₂ needed = ?
Solution:
Chemical equation:
Na₂CO₃ + CaCl₂ → 2NaCl + CaCO₃
First of all we will calculate the number of moles of CaCO₃.
Number of moles = mass/molar mass
Number of moles = 2.00 g / 100.09 g/mol
Number of moles = 0.02 mol
Now we will compare the moles of CaCO₃ and CaCl₂.
CaCO₃ : CaCl₂
1 : 1
0.02 : 0.02
Thus, 0.02 moles of CaCl₂ react,
Volume of CaCl₂ reacted:
Molarity = number of moles / volume in L
0.200 M = 0.02 mol / volume in L
Volume in L = 0.02 mol / 0.200 M
Volume in L = 0.1 L
Volume in mL:
0.1 L × 1000 mL/1L
100 mL
(Immediate) Which structural formula represents a nonpolar molecule?
H-Cl
H-O
|
H
H-H
H-N-H
|
H
Answer: H-H
Explanation: it’s symmetrical on both sides
The structural formula of the nonpolar molecule is H-H. Therefore, option (3) is correct.
What is a nonpolar molecule?A molecule that does not have the charges present at the end as the electrons are finely distributed and symmetrically cancels out each other is a non-polar molecule. A polar molecule cannot be mixed with a non-polar molecule in a solution.
Water is a polar molecule that does not mix with oil as it is a non-polar molecule. Non-polar molecules have a net dipole moment of zero as the dipoles of the atoms are canceled out within the molecule.
Non-polar bonds have formed because the difference in the electronegativities of atoms is less than 0.5. Non-polar bonds do not are generally formed in compounds where there is a presence of symmetry.
The HCl has differences in the electronegativities of hydrogen and chlorine atoms. Therefore, HCl is a polar molecule. Ammonia is also a polar molecule due to the difference in the electronegativities H and N.
Therefore, the Hydrogen molecule (H-H) is a nonpolar molecule as the electronegativity difference is zero.
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giving brainlyest to whoever completes my question
Answer:
What question?
Explanation:
Answer:
how u doing good?
<(^-^)>
helloooo
A chemist prepares a solution of potassium iodide (KI) by measuring out 88. umol of potassium iodide into a 200. mL volumetric flask and filling the flask to
the mark with water.
Calculate the concentration in mol/L of the chemist's potassium iodide solution. Round your answer to 2 significant digits.
Please Help me!
The concentration in mol/L of the chemist's potassium iodide solution : = 4.4 x 10⁻⁴ M
Further explanationGiven
88. μmol of Potassium iodide
200. mL volumetric flask
Required
The concentration
Solution
Molarity is a way to express the concentration of the solution
Molarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution
[tex]\large{\boxed {\bold {M ~ = ~ \frac {n} {V}}}[/tex]
Conversion :
88. μmol = 88 . 10⁺⁶ mol = 8.8 10⁻⁵ mol
200 ml = 0.2 L
The molarity :
= n : V
= 8.8.10⁻⁵ : 0.2
= 4.4 x 10⁻⁴ M
14. Aluminum reacts with a certain unknown element (element X) to form the following formula. Which group must element X belong to? *
Answer:
c
Explanation:
a family travels 110 km east to spend the night in a hotel. the next day they drive back home, but after traveling 45 km west they decided to stop and visit with friends for the night. find the distance and displacement of the family
Answer:
distance-155
displacement-65
Explanation:
this is what i got and it may be wrong
To solve this we must be knowing each and every concept related to displacement and distance. Therefore, the distance and displacement of the family are 110 km and 65Km respectively.
What is displacement?The separation between two places of an item in motion is known as displacement. Therefore, it relies on both the starting position and the ending position. Displacement is also the shortest distance between the initial and ultimate places.
The meter is used as the calculation's standard unit since it measures distance (m). Displacement is an important notion in many applications in physics. The distinction between two locations of an object is known as displacement. Because it has both a direction and magnitude, it qualifies as a vector quantity.
distance=110 km
displacement= 110 km- 45 km
=65Km
Therefore, the distance and displacement of the family are 110 km and 65Km respectively.
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What other features would you expect to find near the Ring of Fire on volcanoes?
Answer:
i dont know u tell me thats why i am here
Explanation:
Can someone plz help me :
Answer:
B
Explanation:
A arrow sign is -->
A equal sign is =
And, the plus sign is +
Which means the only option left is B Coefficient!
Hope this helps!
Please help, I need to turn this in.
Identify the following as physical (P) or chemical (C) changes.
1. NaCl (Table Salt) dissolves in water. ______
2. Milk sours. _____
3. Ag (Silver) tarnishes. ______
4. Sugar dissolves in water. _____
5. Wood rots. _____
6. Heat changes H2O to steam. ______
7. Baking soda reacts to vinegar. ______
8. Iron (Fe) rusts_____
Answer:
1. chemical
2. chemical
3. chemical
4. physical
5. chemical
6. physical
7. chemical
8. chemical
Answer:
All are correct
Explanation:
I agree with all except the first one
How can an organic compound exist without single bonds between the carbons?
Answer:
Carbon atoms can form double bonds by sharing two pairs of electrons; they can also form triple bonds by sharing three pairs of electrons.
Carbon atoms can form double bonds by sharing two pairs of electrons; they can also form triple bonds by sharing three pairs of electrons.
What is an organic compound?An organic compound is any of a large class of chemical compounds in which one or more atoms of carbon are covalently linked to atoms of other elements, most commonly hydrogen, oxygen, or nitrogen.
A carbon atom can participate in a maximum of four bonds; either four single bonds, two single bonds and a double bond, or one single bond and a triple bond.
A double bond is formed when two atoms use two electron pairs to form two covalent bonds; a triple bond results when two atoms share three electron pairs to form three covalent bonds.
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difference between shell and subshell?
The third step in the Decision Making process is to list your pros and cons for each option.
A pro and Con is ___________about each option.
A
Something positive and negative
B
Something positive
C
Something negative
D
None of the answers
Answer:
A. Something positive and negative
Explanation:
A reaction gives off 35.6 kJ how many calories is this?
5 is equal to 4 times that number
What is the mass of 4.98 x 10^24 atoms of Zn?
Answer:he
H
Explanation:
541 grams is the mass of [tex]4.98\times 10^{24}[/tex] atoms of Zn.
Explanation:
Given
The number of zinc atoms =[tex]4.98\times 10^{24}[/tex]
To find:
The mass of given atoms of zinc atoms
Solution:
The number of zinc atoms =N=[tex]4.98\times 10^{24}[/tex]
According to mole concept:
1 mole = Avogadro 's Number = [tex]N_A= 6.022\times 10^{23} atoms/ molecules/ions[/tex]
Let the moles of zinc be = n
Number of atoms in n moles of zinc will be:
[tex]N=n \times N_A\\4.98\times 10^{24} atoms= n\times 6.022\times 10^{23} atoms\\n=\frac{4.98\times 10^{24} atoms}{ 6.022\times 10^{23} atoms}=8.27[/tex]
Moles of zinc = 8.27 mol
Molar mass of zinc = 65.38 g/mol
Mass of 8.27 moles of zinc:
[tex]=8.27\times 65.38 g/mol=540.67 g\approx 541 g[/tex]
541 grams is the mass of [tex]4.98\times 10^{24}[/tex] atoms of Zn.
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limestone CaCo3 decomposes into lime according to the equation below
CaCo3 = CaO + CO2
(i) Balance the chemical equation above
(ii)what mass of limestone would produce 11.2 grams of lime?
Show your working
Answer:
Mass = 19.0 g
Explanation:
Given data:
Mass of limestone react = ?
Mass of lime produced = 11.2 g
Solution:
Balanced chemical equation:
CaCO₃ → CaO + CO₂
Number of moles of lime:
Number of moles = mass / molar mass
Molar mass of lime 56.1 g/mol
Number of moles = 11.2 g/ 56.1 g/mol
Number of moles = 0.19 mol
Now we will compare the moles of CaO and CaCO₃
CaO : CaCO₃
1 : 1
0.19 : 0.19
Mass of limestone react:
Mass = number of moles × molar mass
Mass = 0.19 mol × 100.1 g/mol
Mass = 19.0 g
Ideal Gas Law Test
11 have 1.9 moles of gas held at a pressure of 5 atm and in a container with a volume of S0 liters, what is the temperature of the gas?
O 1603 K
O 273 K
O 0.0006
O 0.0006 K
Answer:
T = 1603 K
Explanation:
Given data:
Number of moles of gas = 1.9 mol
Temperature of gas = ?
Pressure of gas = 5 atm
Volume of gas = 50 L
Solution:
The given problem will be solve by using general gas equation,
PV = nRT
P= Pressure
V = volume
n = number of moles
R = general gas constant = 0.0821 atm.L/ mol.K
T = temperature in kelvin
By putting values,
5 atm × 50 L = 1.9 mol × 0.0821 atm.L/ mol.K × T
T = 250 atm.L / 1.9 mol × 0.0821 atm.L/ mol.K
T = 250 atm.L /0.156 atm.L/K
T = 1603 K
The velocity of an object must include both speed and direction?
Answer:
An object could be traveling at a constant speed, but change directions
Explanation:
Hope that helps
BRAINLIEST FOR THE FIRST ANSWER How are isotopes used in industry?
Answer: Radioisotopes are used by manufacturers as tracers to monitor fluid flow and filtration, detect leaks, and gauge engine wear and corrosion of process equipment. Small concentrations of short-lived isotopes can be detected whilst no residues remain in the environment.
Explanation: Uranium-235 is used for nuclear fission and as a fuel in nuclear reactors.
An isotope of cobalt is used in the treatment of cancer.
An isotope of iodine is used in the treatment of goiter.
