Answer:
The correct answer is - a condensation polymerization of a carboxylic acid and an alcohol
Explanation:
Condensation polymerization is a type of polymerization that forms a byproduct by the bonding of two different types of monomers during polymerization.
Polyester is an example of condensation polymerization which is formed by the polymerization of carboxylic acid and an alcohol monomer. In addition polymerization, there is only one type of monomers bond together.
Answer:
A. a condensation polymerization of a carboxylic acid and an alcohol
Explanation:
What is the atomic number of an atom?
O the number of neutrons
O the number of electrons and neutrons
O the number of protons
the number protons and neutrons
marine science flvs 2.03
can someone please send the answers for this!!!
Answer:
101
Explanation:
Answer:
Explanation:
Which of the following compounds below would possess it trigonal planar molecule or geometry?
PHOTO ABOVE
HELP ME IN MY TEST
Answer:
B - BF3
Explanation:
BF3 has 3 bonds around the central atom and now lone pairs on it. This matches the geometry of a trigonal planar molecule as per the VSEPR Model.
Molecules have two distinct characteristics: form and geometry. Geometry includes the lone pair encircling the focal element whereas shape excludes it. Therefore, the correct option is option B.
What is VSEPR theory?Valence shell electron repulsive force is what VSEPR stands for. Based on the valence electron pairs that are prevalent around the core element of the molecule, the VSEPR theory is employed to predict the structure and geometry of molecules.
According to VSEPR theory, Lone pair lone pair repulsion is greater than bond pair bond pair repulsion. The core atom of BF[tex]_3[/tex] is surrounded by three bonds and contains no lone pairs. According to the VSEPR Model, this corresponds to the geometry of such a trigonal planar molecule.
Therefore, the correct option is option B.
To know more about VSEPR theory, here:
https://brainly.com/question/19582124
#SPJ6
What do we call the bond that forms when atoms share two pairs of electrons
(I have a test tomorrow and I'm doing a review right now but have no idea what the answer to this is.)
What’s this called
Please ASAP
Answer:
carbon dioxide CO[tex]{2}[/tex]
Explanation:
Double Polar Covalent bonds with CO2
Explanation:
Keep in mind that CO2 is a nonpolar molecule
How does a heat affect the chemical reaction?
Answer:
Increasing the temperature increases reaction rates because of the disproportionately large increase in the number of high energy collisions. It is only these collisions (possessing at least the activation energy for the reaction) which result in a reaction.
Explanation:
Brainliest please helppppppppp
Ayour anwerser
Explanation
Answer:
chlorine manoxside
co2
Explanation:
What volume will 250. mL of gas at STP occupy ig the pressure changes to 2.0 atmospheres and the temperature changes at 30 degrees Celsius
Answer:
it is 75 degrees
Explanation:
Volume is 138.7 mL.
The equation for calculation of volume is as follows:-
[tex]\frac{P_1V_1}{T_1} =\frac{P_2V_2}{T_2}[/tex]
STP:-
Temperature=273 K
Pressure=1 atm
[tex]\frac{1 atm\times250mL}{273 K} =\frac{2 atm\times V_2}{303\ K}\\V_2=138.7\ mL[/tex]
Hence, the volume is 138.7 mL.
To know more about:-
https://brainly.com/question/15988929
Match the element with their place on the periodic table.
Question 4 options:
Period 4, group 5-
Period 5, group 7-
Period 7, group 5-
Period 5, group 4-
1. dubrium
2. technetium
3. zirconium
4. vanadium
Answer:
Period 4, group 5- Vanadium
Period 5, group 7- Technetium
Period 7, group 5- Dubnium
Period 5, group 4- Zirconium
Explanation:
Based on the Phase Change Graph below, what is the Melting Point for this point
substance?
Answer:
Where is the phase melting graph? Can't seem to find it
On the periodic table, the period number can identify the number of energy levels an element will contain.
False
True
i need help
How do I find the number of atoms using a chemical formula? ex: 4 HNO3
you should
MOL × NA(Avogadro Constant)
Mol = 4
HNO3 = 5 Atome ( 1H + 1N + 3O)
NA = 6.02 × 10* ( * = 23)
[tex]4 \times 5 \times 6.02 \times {10}^{23} = 20 \times 6.02 \times {10}^{23} = 120.4 \times {10}^{23}atom [/tex]
Answer:
2.408 x 10^24
GREETINGS!
One mole of a substance is equal to 6.02 × 10²³ units of that substance. The number 6.022 × 10²³ is known as Avogadro's number.
so if one mole of molecule is equal to that number so,
for 4 moles of [tex]HNO_{3}[/tex]= 4 x ([tex]6.02x10^{23}[/tex])
so answer is,
2.408 x 10^24
HOPE IT HELPS YOU.
Learning Task No. 2: Using the Periodic Table of Elements, determine the ele-
ments asked in each guide question. Write your answer in your notebook.
Guide Questions:
1. Which elements are likely to lose electrons?
2. Which elements are likely to ain electrons?
3. Which type of elements are likely to have no electrical charge at all?
Explanation:
1 metal they are likely to lose an electron
2non metals
3 Nobel gases because they are not reactive with stable valance number
Name for each compoud
1.CO
2.H2SO4
3CaCO3
4 H202
5NaF
IUPAC name for BaSO3
Answer:
Barium Sulfite
Explanation:
Barium Sulfite
The IUPAC name for BaSO₃ is barium sulfite.
"Ba" stands for barium, which is the chemical symbol for the element with atomic number 56. Barium is an alkaline earth metal and belongs to Group 2 of the periodic table.
"SO₃" stands for sulfite, which is a polyatomic ion composed of one sulfur atom (S) and three oxygen atoms (O). The chemical formula for the sulfite ion is SO₃²⁻. The sulfur atom in the sulfite ion has a +4 oxidation state.
When barium (Ba) reacts with the sulfite ion (SO₃²⁻), they combine to form barium sulfite (BaSO₃). The balanced chemical equation for the reaction is:
Ba²⁺ + SO₃²⁻ → BaSO₃
Barium sulfite is an ionic compound, where the Ba²⁺ ion and the SO₃²⁻ ion are held together by electrostatic attractions (ionic bonds). In its solid form, barium sulfite appears as a white crystalline powder.
Learn more about IUPAC name from the link given below.
https://brainly.com/question/33646537
#SPJ6
For an object that has a volume of 24.5 mL and a mass of 102g, calculate the density of the object
Answer:
The answer is 4.16 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\ [/tex]
From the question
mass = 102 g
volume = 24.5 mL
We have
[tex]density = \frac{102}{24.5} \\ = 4.163265306...[/tex]
We have the final answer as
4.16 g/mLHope this helps you
Which of the following is NOT an example of a chemical change? *
O Corrosion
O Grinding
O Combustion
O Rust
Un compuesto formado por carbono, hidrógeno y oxígeno tiene una masa de 4,6 g. Se hace reaccionar con 9,6 g de oxígeno dando 8,8 g de CO2 y 5,4 g de agua. Si cogemos 9,2 g de un compuesto en un volumen 5,80l en P= 780 mmHg a una temperatura de 90ºC. Calcula la fórmula empírica y molecular.
Answer:
La fórmula empírica y molecular es: C₂H₆O.
Explanation:
Para calcular la formula empírica y molecular del compuesto debemos primero plantear la reacción:
[tex] C_{x}H_{y}O_{z} + O_{2} \rightarrow CO_{2} + H_{2}O [/tex]
Necesitamos encontrar "x", "y" y "z". Para ello, tenemos que recordar que la masa de carbono e hidrógeno producida está relacionada con la cantidad de C y H inicial (del compuesto):
Para el H:
CHO → H₂O
y 5,4g
[tex] \frac{2*1 g}{18 g} = \frac{y}{5,4 g} \rightarrow y = 0,6 g [/tex]
Para C:
CHO → CO₂
x 8,8g
[tex] \frac{12 g}{44 g} = \frac{x}{8,8 g} \rightarrow x = 2,4 g [/tex]
Para el O:
[tex] z = 4,6 g - 2,4 g - 0,6 g = 1,6 g [/tex]
Ahora mediante el calculo de los moles del C, H y O podemos encontrar la fórmula empírica:
Para el H:
[tex] n_{y} = \frac{m}{Pm} = \frac{0,6 g}{1 g/mol} = 0,6 moles [/tex]
Para el C:
[tex] n_{x} = \frac{m}{Pm} = \frac{2,4 g}{12 g/mol} = 0,2 moles [/tex]
Para el O:
[tex] n_{z} = \frac{m}{Pm} = \frac{1,6 g}{16 g/mol} = 0,1 moles [/tex]
[tex] C_{\frac{n_{x}}{n_{z}}}H_{\frac{n_{y}}{n_{z}}}O_{\frac{n_{z}}{n_{z}}} = C_{\frac{0,2}{0,1}}H_{\frac{0,6}{0,1}}O_{\frac{0,1}{0,1}} = C_{2}H_{6}O_{1} [/tex]
Entonces, la fórmula empírica del commpuesto formado es C₂H₆O.
Ahora para determinar la fórmula molecular podemos usar la siguiente relación:
[tex] \frac{Pm}{Pm_{e}} = n [/tex]
[tex] F_{m} = n*F_{e} [/tex]
[tex] F_{m} = \frac{Pm}{Pm_{e}}*F_{e} [/tex]
En donde Fm (fórmula molecular) y Fe (fórmula empírica) están relacionadas por n.
El valor de Pm lo obtenemos de la ecuación del gas ideal:
[tex]PV = nRT = \frac{m}{Pm}RT[/tex]
[tex] Pm = \frac{mRT}{PV} = \frac{9,2 g*0,082 L*atm/(K*mol)*(90 + 273 K)}{1.02 atm*5,80 L} = 46,3 g/mol [/tex]
[tex] F_{m} = \frac{46,3 g/mol}{(2*12 + 6*1 + 16)g/mol}*C_{2}H_{6}O_{1} = 1.00*C_{2}H_{6}O_{1} = C_{2}H_{6}O_{1} [/tex]
Por lo tanto, la fórmula molecular es la misma que la fórmula empírica, a saber C₂H₆O.
Espero que te sea de utilidad!
a boy walking in the street potential or kenetic energy?
Answer:
[tex]\boxed {\tt Kinetic \ energy}[/tex]
Explanation:
First, let's define kinetic energy and potential energy.
Kinetic
energy an object has due to motionPotential
energy an object has stored due to its position, charge, arrangement or other factorsSince the boy is walking down the street, the boy is in motion. Therefore, the energy must be kinetic energy.
in atmosphere water is solute give reason
Answer:
water vapour is there
Explanation:
thats all i know
What information does a subscript in a chemical formula provide? Choose all that apply. * The charge of that atom while in the compound How many of each atom are present in the compound How many valence electrons each element has while in the compound How many valence electrons each element starts with In ionic, the simplified ratio of atoms in relation to each other
Answer:
B. How many of each atom are present in the compound
D. the simplified ratio of atoms in relation to each other
Explanation:
In a chemical formula, chemical elements or atoms are represented by a chemical symbol for example Fe for iron and Na for sodium, and the number of each atom is represented by a subscript such as CO2, where 2 is a subscript representing 2 atoms of oxygen.
A subscript represents the number of each atom in the compound and the simplified ratio of atoms in relation to each other. The simplified ratio of atoms in relation to each other means subscript shows the contribution of both the atoms in the compound, for example: N2 + 3H2 => 2NH3, it means the subscript showing the ratio or proportionate of atoms that is 2:2 for both nitrogen and hydrogen.
The subscript is always written below and to the right of the chemical symbol.
Hence, the correct answer is "B. How many of each atom are present in the compound and D. the simplified ratio of atoms in relation to each other"
combined aggregation of minerals
Answer:
Rocks
Explanation:
The combined aggregation of minerals are called rocks. There are three types of rocks Igneous Rocks, sedimentary rock, and metamorphic rocks.
Rocks are formed due to the repetitive, orderly, geometrical internal arrangement of minerals. Minerals undergo several processes such as weathering, crystallization, erosion, and sedimentation to form rocks.
Hence, the combined aggregation of minerals is called rocks.
the ability for a substance to rust is
a. oxidation
b.rustability
c.magnetic attraction
d.reactivity
Answer:
i think it is letter b. rustability but not so sureeee
in the chemical equation HCI+CaCO3 which element cannot be apart of the products a carbon b chlorine c nitrogen d oxygen
Answer:
Nitrogen
Explanation:
The element nitrogen cannot be a product in the given reaction.
The reaction is;
HCl + CaCO₃
According to the law of conservation of matter, "matter is neither created nor destroyed in the cause of a chemical reaction".
The law suggests that, in a chemical reaction, we end up with the same species we started with. Although due to rearrangement of bonds, new compounds can form;
Starting atoms
H
Cl
Ca
O
These species will also be found in the product.
Hydrogen atoms are excited by a laser to the =4 state and then allowed to emit.
What is the maximum number of distinct emission spectral lines (lines of different wavelengths) that can be observed from this system? Calculate the wavelength of the 4⟶3 transition.
Answer:
1875 nm
Explanation:
Given the Rydberg formula for hydrogen: 1/λ = R(1/n₁² - 1/n₂²)
where R ≈ 1.097* 10^7 /m
Hence;
1/λ = 1.097* 107/m * (1/3² - 1/4²) = 5.3 * 10^5/m
λ = 1.875 * 10-6 m = 1875 nm
Suppose the moon orbited the earth just half as fast as it does now.
How many high tides would any one area have in one day?
A-3
B-2
C-1
D-4
Answer:
Explanation: The correct answer is 1. Do not put 2 .
Which tissues and organs belong to the Musculoskeletal System?
What would happen to the rate of a reaction if the concentration of substrate was increased after the point of saturation?
a)The reaction rate would increase.
b)The reaction rate would decrease.
c)There would be no effect.
Answer:
there would be no effect
Explanation:
Please help ASAP 100 points points help I will mark you as brainlister
this is lithium ion with a +1 charge
Help pleaI’ll give brainliest
Which element has the
greatest number of valence electrons available for bonding?
O selenium
Oboron
O calcium
O chlorine