Answer:
7.46 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\[/tex]
From the question
mass = 500 g
volume = 67 mL
We have
[tex]density = \frac{500}{67} \\ = 7.462686[/tex]
We have the final answer as
7.46 g/mLHope this helps you
what does the bottom layer represent?
Answer:
A blanket
Explanation:
bottom layer is a nice comfy blanket you could use to sleep with
Explanation:
Something comfy you can use for yourself or others.
a) What is the role of electrons in an atom?
b) How do we determine how many electrons are in an atom?
(WILL GIVE BRAINLESS)Throwing a paper airplane through the air is an example of A. fluid friction B. sliding friction C. rolling friction D. solid friction
Answer:
sliding friction
Explanation:
Answer:
D. solid friction
Explanation:
Its not a fluid, Its not sliding, and its not rolling, so therefor is solid friction
How many grams of Fe can be produced when 6.10 g of Fe2O3 reacts?
As per the balanced reaction, two moles or 319.4 g of Fe₂O₃ gives 4 moles or 223.4 g of Fe. Thus 6.10 g gives 4.22 g of Fe.
What is ferric oxide?
Ferric oxide is an ionic compound formed from iron and oxygen in which iron is in +3 oxidation state. It is also called iron oxide which decomposes to form molecular oxygen and iron.
The balanced equation giving Fe and oxygen from ferric oxide is written below:
[tex]\rm 2Fe_{2}O_{3} \rightarrow 4Fe + 3O_{2}[/tex].
The molar mass of ferric oxide is 159.7 g/mol. Thus two moles weighs 159.7 × 2 = 319.4 g. Atomic mass of Fe is 55.85 hence, 4 moles is 223.4 g.
As per the balanced reaction, 319.4 g of ferric oxide gives 223.4 g of iron. Thus mass of iron , Fe produced from 6.10 g of ferric oxide is calculated as follows:
mass of Fe = (223.4× 6.10 ) /319.4
= 4.226 g
Hence, 4.22 g of Fe will be produced from 6.10 g of Fe₂O₃.
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Determine whether each of the reactions given below would be spontaneous or not. Please justify your answer in each case.
A. Fe2+ (aq) + Al (s) → Al3+(aq) + Fe (s)
B. Pb2+ (aq) + Sn (s) → Sn2+ (aq) + Pb (s)
C. Mg2+ (aq) + Ag (s) → Ag+ (aq) + Mg (s)
A spontaneous reaction is one in which the change in free energy is negative and the standard cell potential is positive.
For a redox reaction to be spontaneous, the electrode potential of the cell must be positive and this depends on the relative electrode potentials of the species involved in the reaction. A metal can not displace a metal above it in the electrochemical series from solution.
Based on this;
Fe2+ (aq) + Al (s) → Al3+(aq) + Fe (s) is spontaneous because iron is lower than aluminium in the electrochemical seriesPb2+ (aq) + Sn (s) → Sn2+ (aq) + Pb (s) is spontaneous because lead is lower than tin in the seriesMg2+ (aq) + Ag (s) → Ag+ (aq) + Mg (s) is not spontaneous because magnesium is above silver in the series.Lean more: https://brainly.com/question/24556237
how many electrons do atoms like to have in their outer shell?
Explanation:
In general, atoms are most stable, least reactive, when their outermost electron shell is full. Most of the elements important in biology need eight electrons in their outermost shell in order to be stable, and this rule of thumb is known as the octet rule.
Neon consists of three isotopes: Neon-20 with a mass of 19.992 amu and an abundance of 90.48%, Neon-21with a mass of 20.994 amu and an abundance of 0.27%, and Neon-22 with a mass of 21.991 amu and an abundance of 9.25%. Determine the average atomic mass of Neon:
Your teacher has just asked you to measure out 1.24 x 1023 molecules of sodium chloride, Sodium chloride has a chemical formula of Naci. Using a Periodic Table,
determine how many grams of sodium chloride you should measure out.
A 12.08
2.12 x 1028
284 g
D 72.5 x 1021 g
Answer:
A)
Explanation:
Ned help with this question
Answer:
135.6
Explanation:
12 * 11.3 = 135.6
To find the mass you have to multiply the density and volume together
If you already have the mass you divide the mass by either the density or volume
The stratosphere is cold except in its upper regions where _____ is located.
Question 6 options:
Oxygen
ozone
space
Nitrogen
[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]
The stratosphere is cold except in its upper regions where Ozone is located.
Use the equation to answer the question.
CH4 + _____Cl2 → CCl4 + _____HCl
Which numbers balance this equation?
The whole Balanced Reactions Quick Check for Honors Chemistry A is
1) A. The reactants and products have the same number and type of atoms, but the atoms may be recombined.
2) B. It shows how many molecules there are of a particular substance.
3) D. NaOH + HCl → NaCl + H2O
4) A. Atoms always remain intact during chemical reactions.
5) D. 4, 4
The balanced chemical equation is:
CH₄ + 4Cl₂ —> CCl₄ + 4HCl
The numbers that balanced the equation are: 4, 4
To know the number that balanced the equation, we shall simply balance the equation.
CH₄ + Cl₂ —> CCl₄ + HCl
There are 4 atoms of H on the left side and 1 atom on the right side. It can be balance by writing 4 before HCl as shown below:
CH₄ + Cl₂ —> CCl₄ + 4HCl
There are 2 atoms of Cl on the left side and a total of 8 atoms on the right side. It can be balance by writing 4 before Cl₂ as shown below:
CH₄ + 4Cl₂ —> CCl₄ + 4HCl
Now, the equation is balanced
The numbers that balanced the equation are 4,4
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PLEASE HURRY AND TELL ME THE ANWERS
Answer:
Explanation:
guys help plz I need it
Answer:
may be the answer will be study the structure of the earth and resources.
How did gravity and density affect the order in which these spheres ended up on earth
Answer:
The atmosphere and Earth's interior are layered by density. The differentiation between these layers is due to processes that took place during the early stages of Earth's formation (ca. 4.5 billion years ago). At this time, melting would have caused denser substances to sink toward the center while less-dense materials would have migrated to the crust.
Gravity pulls more strongly on denser materials so denser materials are at the center of things.
Explanation:
Gravity pulls more strongly on denser materials so denser materials are at the center of things. The lowest layer of the atmosphere is denser than the upper layer. Earth's liquid metal core has convection, which generates the magnetic field.
Denser materials are in the centre of the universe because they are more powerfully pulled toward the centre by gravity.
What is gravity?The force that pulls items toward the centre of a planet or other entity is called gravity. All of the planets are kept in orbit around the sun by gravity.
Gravity applies to anything that has mass. Gravity is stronger for objects with higher mass. Along with distance, gravity weakens as well. Therefore, the gravitational force of two things becomes stronger the closer they are to one another.
The mass of the Earth is what creates gravity. The total gravitational force of all of its mass acts on the weight in your body. What gives you weight is that. Additionally, you would weigh less than you do now if you were on a planet with a lower mass than Earth.
Gravity applies to anything that has mass. Gravity is stronger for objects with higher mass. Along with distance, gravity weakens as well. Therefore, the gravitational force of two things becomes stronger the closer they are to one another.
Therefore, denser materials are closer to the centre of the universe because gravity is more drawn to them.
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During photosynthesis,blank energy is transformed into blank energy
Answer:
I am also beginners I don't know I am only completing this answer and sorry!!!!!!
Answer:
Solar Energy and Chemical energy
Explanation:
what are some examples of fusion
Answer:
Example of a fusion dish: combination of smoked salmon wrapped in rice paper, with avocado, cucumber and crab sticks. Fusion cuisine is cuisine that combines elements of different culinary traditions that originate from different countries, regions, or cultures.
Polonium has a mass number of 212 and an atomic number of 84. In a balanced nuclear reaction, polonium releases an alpha particle to produce lead. Which option is the atomic number of lead?(1 point)
210
208
80
82
plss help
right answer only
Answer:
D. 82
Explanation:
Answer:
see below
Explanation:
1. 138
2. the conversion of an atom of one element into a different element through nuclear changes
3. A nuclear equation is balanced according to mass number. A chemical equation is balanced according to the total mass before and after the change.
4. 82
5. Some of the matter is converted to energy.
[quizlet: captncrun]
Fill in the blanks
a. Silica gel is used as …………… .
b. The ………. distillation is used to obtain petroleum products from crude oil.
c. Chromatography is used to separate………… .
d. Liebig’s condenser is used in ………… .
e. Plant pigment can be separated by …………… .
Answer:
a:It is used as a moisturizer
b:Paraffin
c:Dissolve substances
d:Chemical distillation
e:Paper chromatography
A wind turbine transfers energy from
energy stores. What one word
completes the sentence?
Answer:
The word "transfers" completes the sentence.
Explanation:
A wind turbine transforms the mechanical energy of wind into electrical energy. A turbine takes the kinetic energy of a moving fluid, air in this case, and converts it to a rotary motion. As wind moves past the blades of a wind turbine, it moves or rotates the blades. These blades turn a generator.
Hope This Helps!
Answer:
The right answer is "kinetic"
Explanation:
Wind is moving, so has kinetic energy.
what is the frequency of a 2,600 cm wave
Answer: 1.15 × 10⁷ Hz
Explanation:
Frequency = Speed of Light ÷ Wavelength
= (2.99 × 10⁸ m/s) ÷ (2.6 × 10 m)
= 1.15 × 10⁷ Hz
The frequency of a wave of wavelength 2600 cm is 1.15 × 10⁷ Hz
Notes:
Hz ≡ /s
1 m = 100 cm
The frequency of a 2,600 cm wave is 1.15 × 10⁷ s⁻¹
From the question,
We are to determine the frequency of a wave with wavelength 2600 cm.
Using the formula
[tex]c = \nu \lambda[/tex]
Where c is the speed of light (c = 3.0 × 10⁸ m/s)
[tex]\nu[/tex] is the frequency
[tex]\lambda[/tex] is the wavelength
Then, we can write that
[tex]\nu = \frac{c}{\lambda}[/tex]
From the question
λ = 2600 cm = 26 m
Putting the parameters into the formula, we get
[tex]\nu = \frac{3.0 \times 10^{8} }{26}[/tex]
[tex]\nu = 0.11538 \times 10^{8}[/tex]
[tex]\nu \approx 1.15 \times 10^{7} \ s^{-1}[/tex]
Hence, the frequency of a 2,600 cm wave is 1.15 × 10⁷ s⁻¹
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A golf ball with a mass of 46 grams will accelerate five times as fast as a
pool ball weighing 130 grams. Which of Newton's laws is this an example of?
Answer:
Newtons first law
Explanation:
focre=mass x acceleration
When the temperature of the air in a hot air ballon increases, what happens to the volume of the gas?
Answer:
As the temperature increases, the gas particles absorb more heat energy. They speed up and move farther away from one another. So the increase in temperature causes an increase in volume. (Boyles Law)
Which things below would help make an ecosystem more biodiverse? O Having a very large population of a species O Having a large community of organisms O Lots of different traits in a species Not having seasons
The atomic number of an element is 10, which element does this atom represent?
Answer:
Neon
Explanation:
Neon is the Group 18 element.It is a nobel gas.electronic configuration is given by[tex]\\ \sf\longmapsto [Ne]=1s^22s^22p^6[/tex]
Answer:
Name: Neon
Formular: Ne
Explanation:
[tex].[/tex]
Write an argument for the people of Westfield identifying the reddish-brown substance
Answer:
lol
Explanation:
Please help with chemistry!
Answer:
name is Ian symbol is spices mass number is 100
Explanation:
#
For each pair of terms below, write a sentence that summarizes how they are different.
thermal conductor, thermal insulator
thermal expansion, thermal contraction
Which of the following describes a low viscosity liquid
Answer:
a liquid that is thick and sticky
Explanation:
PPPPPPLLLLLLSSSSS HELP IT DUE IN TWENTY MINUTES WILL GIVE THIRTY POINTS
4. Evaluate: Look at the results of your experiment. What was the relationship between crumple zone rigidity, crumple zone deformation, and maximum force on the dummy?
Answer:
Explanation:
Start by restating the question.
So how is the crumple zone rigidity, crumple zone deformation , and the maximum force of the dummy similar, and how are they different?
The crumple zone increases, the crumple zone deformation increases then decreases then repeated in increasing and decreasing , and the maximum force decreases. Hope that helps!
What will be the volume of a typical inhaled human breath of 0.020 mol at 1.0 atm and 37°C?
O A. 0.061 L
OB. 0.51 L
O C. 5.1 L
D. 520 L
Answer:
0.51
Explanation:
i got it wrong multiple times just for this to be the answer.
listening to mitski while crying over this science goodluck