Answers
Answer:
6 inches and that should be the answer
Related Questions
Name the form of carbon used for absorbing poisonous gases and purification of noble gases
Answers
the basic principles of atomic theory were first conceived by:
Answers
The ancient atomic theory was proposed in the 5th century bc by the Greek philosophers Leucippus and Democritus and was revived in the 1st century bc by the Roman philosopher and poet Lucretius.
The prefix 'sub' means 'below'. Why are particles smaller than an atom called subatomic particles.
Answers
Answer:
Because they are smaller than an atom
Explanation:
(a) Given that density is usually expressed in the units of g/cm3
, calculate the density of a cube of plastic that
has a mass of 2.331 g and an edge length of 1.500 cm (volume of a cube is V = l^3).
(explain/or do density(calculate it) find volume first. then show work of density divided by volume give proper units.) (Density is a physical property of a molecule that’s measured as mass per unit volume.) (Measurement in chemistry. Think about the density of different substances. PLEASE SHOW WORK)
Answers
Answer:
0.690g/cm^3
Explanation:
•Mass: 2.331g
•Volume: 3.375 cm^3
One side is 1.5cm.
1.5^3
3.375cm^3
•Density: Mass/Volume
Mass = 2.331g
Volume = 3.375cm^3
2.331g/3.375cm^3
0.690g/cm^3
Density: 0.690g/cm^3What is the wavelength of a light with a frequency of 1.7 x 10^17 /s?
Answers
Wavelength = Speed of Light ÷ Frequency
= (2.99 × 10⁸ m/s) ÷ (1.7 x 10¹⁷ /s)
= 1.76 ×10⁻⁹ m
The wavelength of a light of frequency 1.7 x 10¹⁷ /s is 1.76 ×10⁻⁹ m.
Can we change the ratio between the elements?with explantion
Answers
Answer:
What happens when you change the ratio of elements in a compound?
If two elements combine in a different ratio, the result is a different compound. In other words, the same compound will always form from the same elements in the same ratio.
Explanation:
How do you find the ratio of an element?
Convert the mass of each element to moles of each element using the atomic masses. Find the ratio or the moles of each element by dividing the number of moles of each by the smallest number of moles. There are fewer moles of oxygen than any other element, so we will assume one mole of oxygen to establish the ratios.
.
.What is the ratio of the elements?
The atomic ratio is a measure of the ratio of atoms of one kind (i) to another kind (j). A closely related concept is the atomic percent (or at. %), which gives the percentage of one kind of atom relative to the total number of atoms. The molecular equivalents of these concepts are the molar fraction, or molar percent
Warm fronts are shown on weather maps as a line with blue triangles. *
A. True
B. False
Answers
Answer:
False
Explanation:
Refer to the picture for better understanding
Hope this helps :)
pls make brainliest :p
And have an amazing day <3
please help! will give brainliest!!! match each of the terms on the right with the letters on the right.
Answers
27 is f
26 is e
please help! qqqqqqqq
Answers
Answer:
sorry Hindi ko po alam ang sagot
8. Calculate density and record it in Table 1for each of the minerals. (Make sure to use the correct significant figures)
Answers
Answer:
.....
Explanation:
BECAUSE ....
for a neutralization reaction, would you expect the magnitude of q to increase, decrease, or stay the same if the concentration of only the acid were doubled? why?
Answers
For a neutralization reaction, the value of q(heat of neutralization) is doubled when the concentration of only the acid is doubled.
A neutralization reaction is a reaction in which an acid reacts with a base to yield salt and water. Ionically, a neutralization reaction goes as follows; H^+(aq) + OH^-(aq) ------> H20(l).
The heat of neutralization (Q) of the system depends on the concentration of the solutions. Since Q is dependent on concentration, if the concentration of any of the reactants is doubled, more heat is evolved hence Q is doubled.
Learn more: https://brainly.com/question/10323185
Answer:
Stay the same
Explanation:
If only the concentration of acid were doubled no additional neutralization reaction would occur
haz un mapa conceptual y explique con imagenes las formas , estructuras y tipos de celulas vegetales que existen en la naturaleza.
Necesito ayuda es para hoy.
Answers
Answer:
Si
Explanation:
WILL MARK AS BRAINLIEST IF CORRECT
1) How do valence electrons impact the type of bonds an atom makes?(1 point)
a. A large number of valence electrons means the atom will share electrons; a small number of valence electrons leads to transferring from one atom to another.
b. An atom wants a full outer shell of valence electrons, so it will either transfer or share electrons depending on what the other atom needs.
c. An atom wants an empty outer shell of valence electrons, so it will either transfer or share electrons depending on what the other atom needs.
d. A small number of valence electrons means the atom will share electrons; a large number of valence electrons leads to transferring from one atom to another.
2) Use your knowledge of valence electrons and how they affect bonds to figure out how carbon (Group 14) and oxygen (Group 16) would be attached to one another. In carbon dioxide (CO2), how is the compound structured? (Use “–” to represent a single bond and “=” to represent a double bond.)(1 point)
a. C–O–O
b. C=O–O
c. O=C–O
d. O=C=O
3: Methane’s chemical formula is CH4. Is there a bond between any of the hydrogen atoms? Why or why not?(1 point)
a. Yes, there is because they form a long chain in order to all have stable outer energy shells.
b. No, there is not because it would form H2 instead of methane if hydrogen bonded with itself.
c. No, there is not because carbon needs four bonds, so it bonds with each hydrogen atom; hydrogen only forms one bond.
d. Yes, there is because there are one too many hydrogen atoms for carbon to handle alone, so one hydrogen must bond with another.
4: In hydrogen peroxide (H2O2), which option best shows how the atoms are ordered?(1 point)
a. O–H–O–H
b. H–O–O–H
c. O–H–H–O
d. H–O–H–O
Answers
Answer:
1. How many electrons does hydrogen need in order to have a full shell of valence electrons?...two
2. How do valence electrons impact the type of bonds an atom makes?...An atom wants a full outer shell of valence electrons, so it will either transfer or share electrons depending on what the other atom needs.
3.Use your knowledge of valence electrons and how they affect bonds to figure out how carbon (Group 14) and oxygen (Group 16) would be attached to one another. In carbon dioxide (CO2), how is the compound structured? (Use “–” to represent a single bond and “=” to represent a double bond.)...O=C=O
4. Methane’s chemical formula is CH4. Is there a bond between any of the hydrogen atoms? Why or why not?...No, there is not because carbon needs four bonds, so it bonds with each hydrogen atom; hydrogen only forms one bond.
5. In hydrogen peroxide (H2O2), which option best shows how the atoms are ordered?...H-O-O-H
Explanation:
Valence electrons are found on the outermost shell of an atom and determines the kind of bonds the atom can form.
When an atom has a large number of valence electrons, it is energetically more favorable for the atom to share electrons rather than to transfer electrons to another atom. Atoms with less valence electrons transfer electrons from one atom to another.
Since carbon is a member of group 14 and oxygen is a member of group 16, it follows that carbon can share four electrons with two oxygen atoms as shown in the structure O=C=O.
Carbon is always tetravalent in all its compounds. This means that one carbon atom must form four bonds. It follows that the carbon atom in CH4 forms four bonds with the four hydrogen atoms hence there are no bonds between hydrogen atoms in CH4.
H2O2 contains the peroxide (O-O) bond. It follows that its correct structure must be H–O–O–H.
Learn more: https://brainly.com/question/928042
What do polar compounds and ionic compounds have in common?
Answers
Answer:
In what way is a polar-covalent bond similar to an ionic bond? There is a difference between the electronegativities of the two atoms in both types of bonds that results in electrons being more closely associated with the more electronegative atom.
Explanation:
How could understanding the unified structure of atoms help you better understand an element that was unfamiliar to you?
Answers
Answer:
Well,You have to understand pretty much everything, If you know the number of protons or electron then you will know its atomic number,and if you know the number of protons and neutrons then you will know the mass of the element. so, once you grasp these concepts, you can better understand new elements.Explanation:
How many atoms are in 1.00 moles of lithium? __ atoms Li
PLEASE ANSWER:)
Answers
Answer: 6.022 × 10²³
Explanation:
Avogadro's Number (6.022 × 10²³ atoms/mole) is the number of atoms in any mole of a substance.
9. An element Q with electronic configuration 2.8, 2 reacts with elements R. with electronic configuration 2, 8, 7 to form an ionic compound. The likely formula of this compound is:
Answers
Answer:
QCl2
Explanation:
Q should belong to group 2 so valency is 2
R should belong to group 17 so valency is 1
Why can't molecules have thermal energy?
Answers
Answer:
Thermal Energy, also known as random or internal Kinetic Energy, due to the random motion of molecules in a system. Kinetic Energy is seen in three forms: vibrational, rotational, and translational. Vibrational is the energy caused by an object or molecule moving in a vibrating motion, rotational is the energy caused by rotating motion, and translational is the energy caused by the movement of one molecule to to another location.
Pick 1 plz.....................
Answers
Answer:
your answer should be B ANDC
Answer:
B and c is your answer
Explanation:
The metal thallium occurs naturally as 30% thallium -203 and 70% thallium-205 calculate the atomic mass of thallium
Answers
Answer:
204.4 amu.
Explanation:
30% of thallium will be multiplied by the mass number of thallium-203(203). 70% thallium will be multiplied by the mass number of thallium-205(205).
Then you will add them up.
So, (0.30x203) + (0.70x205) = 204.4 amu.
The metal thallium have two isotopes with different masses. The average atomic mass of thallium is 204.4.
What is isotopes?Isotopes are atoms with same atomic number and different mass number. For example hydrogen have three isotopes namely proton, deuteron and triton with masses 1, 2 and 3 au respectively.
The average atomic mass of an atom can be calculated from the percentage abundance and masses of its isotopes as given below:
atomic mass = ∑ (% abundance/100) mass
The mass of metal thallium is calculated as follows:
Atomic mass of thallium = [tex][\frac{30}{100}\times 203] + [\frac{70}{100}\times 205]= 204.4[/tex]
Hence, the average atomic mass of thallium is 204.4 au.
To learn more about isotopes, refer the link below:
https://brainly.com/question/21536220
#SPJ2
True or False. Weather describes the atmospheric events that occur each day & climate is the average weather pattern in an area over many years.
Answers
Answer:
true
Explanation:
Answer:
» TrueExplanation:
Weather refers to short-term changes in the atmosphere of each day ,
Climate describes what the weather is like over a long period of time in a specific area. Different regions can have different climates
What is the correct ratio of coefficients to balance this chemical equation? 8 1:12 01:2:13 O 1-2-3 thing 0 2:43
Answers
Answer:
2:4:3
Explanation:
The coefficient to balance this chemical equation is 2:4:3
Answer: very important
Explanation: where did u get this worksheet from
how many moles of o2 are needed to react with 2.60 moles c2h2
Answers
To determine the moles of O₂ needed, we have to know in what ratio the two reactants react and then use the moles of C₂H₂ in reaction to determine the moles of O₂ needed. We can find this out based on their coefficient in a balanced equation:
Write a Balance Equation
2C₂H₂ + 5O₂ → 4CO₂ + 2H₂O
Compare the Mole Ratio (Equation Coefficient of C₂H₂ to O₂)
Based on the equation, the mole ratio of C₂H₂ to O₂ is 2 to 5. Therefore for every molecule of C₂H₂, ⁵/₂ C₂H₂ molecules are needed to react.
Find the moles of O₂
Since the number of moles of C₂H₂ = 2.60 moles
then moles of O₂ = 2.60 moles × ⁵/₂
= 6.5 moles∴ 6.5 moles of O₂ is needed to completely react with 2.60 moles of C₂H₂.Provide a particle-level explanation for the relationship between pressure and temperature
when the alcohol is in the gas phase.
Answers
The conservation of energy allows finding the relationship between pressure and temperature is:
Pressure is directly proportional to the temperature of the alcohol in the gaseous state.
Pressure is defined by the relationship between force and area of application.
P =[tex]\frac{F}{A}[/tex]
Where P is the pressure, F is the force and A is the area.
In the case of alcohol in the gaseous state, the mechanical energy of the molecules is only kinetic energy, it is related to temperature by the Boltzmann equation.
Em = K = [tex]\frac{3}{2}[/tex] kT
½ m v² = 3/2 k T
v² = [tex]\frac{3 k T}{m}[/tex]
Where m is the mass, v the velocity of the particles, k the Boltzmann constant and T the absolute temperature.
From this equation we see that as the temperature increases, the speed of the alcohol molecules also increases.
Using the relationship between the impulse and the change of momentum we can find the mean force.
I = F t = Δp
Where I impulse, F is the force, t is the time, Δp is the change of momentum.
if we assume elastic collisions the amount of initial and final moment are equal.
[tex]F = \frac{2p}{t} \\F = \frac{2m}{t} v[/tex]
If we assume that the molecules go at a constant speed.
v = d / t
t = d / v
Let's substitute.
[tex]F = \frac{2m}{d} v^2[/tex]
We substitute in the pressure equation.
P = 2m / Ad v²
[tex]P = \frac{6k}{ A d} \ T[/tex]
In conclusion using the conservation of energy we can find the relationship between pressure and temperature is:
Pressure is directly proportional to the temperature of the alcohol in the gaseous state.
Learn more here: brainly.com/question/20638378
HELP PLEASE ANSWER THIS QUESTION
what are 4 ways carbon effects the earth
Answers
Plant and crop life
Human and animal health
Oceans
What is the mass of 7.675 x 1023 atoms C? Answer in units of g.
Answers
Answer: 15.3 grams C
Explanation: 1 mole is 6.02x10^23 atoms. We can find the moles of C in 7.675 x 10^23 atoms of C by dividing:
(7.675 x 10^23 atoms C)/(6.02x10^23 atoms C/mole) = 1.275 moles C
The molar mass of carbon is 12g/mole. So the mass of 7.675 x 10^23 atoms is (1.275 moles C)*(12 g/mole C) = 15.3 grams.
used by rutherford in his experiment; made of two protons and two neutrons
Answers
What is the mass of 15.0 moles of gold?
Answers
Answer:This Should Be the Answer :)
Explanation:
iven: Molar mass of Au = 196.96 g/mol. The Number of moles = 15.3 moles. Hence, 15.3 moles of Au contains 3.01 103 g of Au.
25. In the formula for a molecular compound, which atom generally comes first? You may went
to refer to a periodic table.
Answers
Answer:
For organic compounds, carbon and hydrogen are listed as the first elements in the molecular formula, and they are followed by the remaining elements in alphabetical order. For example, for butane, the molecular formula is C 4 H 10.
Explanation:
A popular radio station broadcasts with a frequency of 92.7 MHz. What is the wavelength of the broadcast?
Answers
f=92.2*1000000 (convert to hertz)
1/92200000=1.085*10raised to the power of -5