Which of the following molecules has a trigonal planar shape?

Which Of The Following Molecules Has A Trigonal Planar Shape?

Answers

Answer 1

Answer:

BF 3

Explanation:

The geometry of the BF 3 molecule is called trigonal planar The fluorine atoms are positioned at the vertices of an equilateral triangle. The F-B-F angle is 120° and all four atoms lie in the same plane.

Answer 2

Answer:

BF3

Explanation:

A p ex


Related Questions

Write this measurement in scientific notation: 0.000130 L

Answers

Answer:1.30 x 10 to the 4th

Explanation:

Just know

Which best explains how photosynthesis is helpful to humans? OIt reduces the amount of harmful rays released by the sun. O It increases the levels of carbon dioxide in the air. O It provides oxygen for humans to breathe. OIt produces proteins, which humans can eat.​

Answers

Answer:

C. sorry i am late :)

Explanation:

During photosynthesis, plants intake carbon dioxide from the air and releases oxygen. Thus, they are providing enough oxygen available for humans to breath.

What is photosynthesis?

Photosynthesis is a bio-chemical process by which green plants produces chemical energy with the aid of light energy absorbed by chlorophyll. Photosynthetic reaction is the combination of carbon dioxide and water giving molecular oxygen and glucose.

Through photosynthesis, the amount ox oxygen and carbon dioxide in the atmosphere is balanced. This balancing cycle involves respiration of animals also.

The carbon dioxide that we exhale are up taken by plants and converts to oxygen gas. This makes sufficient oxygen for all animals to breath. Therefore, photosynthesis is a stage in carbon cycle and oxygen cycle.

To find more on photosynthesis, refer here:

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Based on the results the students record, which group makes the most accurate measurements of the object?

Answers

Answer:

B.

Explanation:

It’s because when you subtract 78.5 and 77.5 you get 1. And when you do 79.5 and 78.5 you get 1 too. I know this because I got the answer right

what is called when a paragraph studies data carefully

Answers

Paraphrasing and summarizing

✅Paraphrasing and summarizing .✅

IamSugarBee

TRUE OR FALSE!!

All solids have a closely packed, fixed arrangement of particles.


A. True
B. False

this is a test, help!!​

Answers

Answer:

false

Explanation:

jk true

what bond is Mg3(PO4)2

Answers

The correct answer is:

COVELANT

Alexandra is preforming this combustion reaction i lab: C3H8 + 5O2 + 3CO + 4h20. If she carefully measures out 220 g of C3H8 and discovers she has produced 660 g of carbon dioxide and 360 g of water, how many grams of oxygen must have been required to react with the C3H8?

Answers

Answer:

800 g of O2.

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

C3H8 + 5O2 —> 3CO2 + 4H2O

Next, we shall determine the masses of C3H8 and O2 that reacted from the balanced equation. This is illustrated below:

Molar mass of C3H8 = (12×3) + (8×1)

= 36 + 8

= 44 g/mol

Mass of C3H8 from the balanced equation = 1 × 44 = 44 g

Molar mass of O2 = 16 × 2 = 32 g/mol

Mass of O2 from the balanced equation = 5 × 32 = 160 g

From the balanced equation above,

44 g of C3H8 reacted with 160 g of O2.

Finally, we shall determine the mass of O2 needed to react with 220 g of C3H8. This can be obtained as follow:

From the balanced equation above,

44 g of C3H8 reacted with 160 g of O2.

Therefore, 220 g of C3H8 will react with = (220 × 160)/44 = 800 g of O2.

Thus, 800 g of O2 is needed for the reaction.

Using the choices below, which is the complete symbol for the isotope that has the following subatomic particles: 19 protons, 21 neutrons, and 18 electrons.

(A: 40 19 K -1)
(B: 40 21 Sc +1)
(C: 38 19 K +1)
(D: 40 19 K +1)
(E: 39 18 Ar +1)

a. A
b. B
c. C
d. D
e. E​

Answers

Answer:

Option D. ⁴⁰₁₉K⁺¹

Explanation:

The following data were obtained from the question:

Proton number = 19

Neutron number = 21

Electron number = 18

Complete symbol of isotope =.?

Next, we shall determine the atomic number of the isotope. This is illustrated below:

Atomic number of an element is simply the number of protons in the atom of the element. Thus,

Atomic number = proton number

Proton number = 19

Therefore,

Atomic number = proton number = 19

Since the atomic number of the isotope is 19, the isotope is simply potassium with symbol K.

Next, we shall determine the mass number of the isotope. This can be obtained as follow:

Proton number = 19

Neutron number = 21

Mass number =.?

Mass number = Proton + Neutron

Mass number = 19 + 21

Mass number = 40

Next, we shall determine the charge on the isotope. This can be obtained as follow:

Proton number = 19

Electron number = 18

Charge =.?

Charge = Proton – Electron

Charge = 19 – 18

Charge = +1

Summary:

Atomic number = 19

Mass number = 40

Symbol = K

Charge = +1

Complete symbol = ⁴⁰₁₉K⁺¹

I WILL MARK BRAINLIST TO WHOEVER SHOWS FULL STEPS PLEASE LOOK AT THE IMAGE ABOVE

Answers

Answer:

+47°C

Explanation:

ΔT means change in temperature. If the change is positive, it means that heat was added and the temperature went up.

ΔT = final temp - initial temp

ΔT = 86°C -39°C = + 47°C

1. The human eye can detect wavelengths of light as short as 0.000037 cm. What is this
wavelength in nanometers?

Answers

Answer:

0.000037 cm is 370 nanometers

Explanation:

Matter is anything with (1)
and volume. A (2)
is a form of
matter with a uniform and unchanging composition. Substances have specific, unchanging
(3)
that can be observed. Substances have both physical and chemical properties.
properties colate observed without changing a substance's chemical
composition. Color, hardness, and (5)
are examples. Other properties cannot be
observed without changing the composition of a substance. These are called (6)
properties
An example is the tendency of iron to form rust when exposed to air.

Answers

Matter is found all around us and is present in all substances in the universe. Substances have a uniform composition and changes in this composition of of a substance is called chemical reaction.

The appropriate words that fill in the blanks are;

1) Mass

2) Substance

3) Properties

4) Physical

5) Density

6) Chemical

Matter has mass and occupy space. Matter with a uniform and unchanging composition is called a substance.

Substances have physical and chemical properties. The physical properties of a substance such as density can be observed without changing the composition of the substance.

Chemical properties of a substance such as rusting can only be observed when the chemical composition of the substance is altered(chemical reaction).

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which element would most likely be a shiny solid at room temperature and a good conductor of electricity?
a. Co
b. I
c. F
d. Cl

Answers

Answer:

A

Explanation:

rest are nonmetals and they are not shiny

What is the total number of hydrogen atoms contained in one molecule of (NH4)2C204?
6
8
4
2

Answers

Answer:

=8 atoms

Explanation:

In (NH4)2C2O4 there are four moles of Hydrogen in the compound (NH4), but there two molecules of (NH4) in this compound.  That's what the 2 in (NH4)2 means, so multiply 4 x 2 = 8.

Hope this helps (:

8 atoms should be the answer i’m not really sure

List and describe six forms of energy.

Answers

Answer:

Gravitational energy, electric energy, magnetic energy, nuclear energy, thermal energy, chemical energy.

Explanation:

gravitational energy - the energy resulting from the attraction of two masses to each other

electric energy - energy from a static or moving electrical charge.

magnetic energy - energy from the attraction of opposite magnetic fields, repulsion of like fields, or from an associated electric field

nuclear energy - energy from the strong force that bonds protons and neutrons in an atomic nucleus

thermal energy - also called heat, this is energy that can be measured as temperature. It reflects the kinetic energy of atoms and molecules

chemical energy - energy contained in chemical bonds between atoms and molecule

mechanical energy - the sum of the kinetic and potential energy

radiant energy - energy from electromagnetic radiation, including visible light and x-rays (for example)

PLEASE HURRY (WILL MARK BRAINLIEST)

What happens when the sound waves released by a bat hit an object?
The sound waves are diffused.
The sound waves are reflected.
The sound waves are refracted.
The sound waves are absorbed,

Answers

Answer:

B.) The sound waves are reflected.

Explanation:

On edge,

i also answered so the other person could get the brainliest

Answer:

b

Explanation:

HURRY PLS!
A wave has a wavelength of 915 meters. what is the frequency of the light?

Answers

Answer:

327.8689 (Hz)

0.3279 (KHz)

0.0003 (MHz

0 (GHz)

What is this phenomenon called?
A.
codominance
B.
coinheritance
C.
incomplete dominance
D.
single gene dominant/recessive trait

Answers

Nah the answer is a)). This is because the species took both the colors and made a new one.

Which of the following suggests a chemical change took place? *

A.The substance is smaller than it was before the change took place.
B.A new substance has formed.
C.The substance looks the same as it did before the change took place.
D.The substance has been shaken up.

Answers

Answer:

A

Explanation:

Because it got smaller so that mean it had a chemical reaction

the density of titanium metal is 4.51 g/cm at 25°C. what mass of titanium displaces 125.0mL of water at 25°C?​

Answers

Answer:

The answer is 563.75 g

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

mass = Density × volume

From the question

volume = 125 mL = 125 cm³

density = 4.51 g/cm³

We have

mass = 125 × 4.51

We have the final answer as

563.75 g

Hope this helps you

Someone drops a book on the floor, and it makes a loud noise. At that time, you turn to look at the person who dropped the book. Turning and looking at the person who dropped the book is an example of a…

A. Phototropism

B. Response

C. Hydrotropism

D. Stimulus

Answers

Answer:

D

Explanation:

Is it possible for a rock to be shaped by forces in the Earth. This picture could be described as a/an

Answers

Answer: Yes

Explanation:

Different force on earth such as wind ocean currents etc make the rocks in earth crests to be change in their shape and size and they moves to different plates.

What is rock cycle?

Rock cycle is the process by which rocks are transforming from one type to the other by the action of wind, water etc.The land is eroded and shaped by wind, water, and ice.

The landscape is dramatically and frequently violently altered by volcanic activity and earthquakes. And over a much longer period of time, the shifting of the earth's plates gradually rearranges the continents and oceans.

These mechanisms all have an impact on the Arctic and Antarctica. We'll go through each in general and in relation to the polar areas specifically.

The three main causes of erosion, or the carrying away of rock, silt, and soil, are wind, water, and ice. Weathering, or the physical or chemical degradation of the minerals in rock, is separated from erosion.

To find more about rock cycle, refer the link below:

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How are the atoms in an object affected when the temperature of the object increases? *

They join together.
They vibrate faster.
They vibrate slower.
They split apart.

Answers

They vibrate faster.

They Vibrate faster

Explanation:
Makes the most sense

Which technology is shown in the photograph?
A. Negative controls
B. Biostimulation reaction
C. Gel electrophoresis
D. Polymerase chain reaction

Answers

Answer:

C

Explanation:

Apex

Do you think MgO has a higher or lower
melting point than NaCl? Why?

Answers

Answer:

Magnesium Oxide (MgO) has a higher melting point than Sodium Chloride (NaCl) which is around 2,800 degrees Celcius. This is because its Mg2+ and O2- ions have a greater number of charges, and so form stronger ionic bonds, than the Na+ and Cl– ions in Sodium Chloride.

How many atoms are there in 4.13 moles of nickel (Ni)

Answers

Answer:

24.87× 10²³ atoms of Ni

Explanation:

Given data:

Number of atoms of Ni= ?

Number of moles of Ni = 4.13 mol

Solution:

we will calculate the number of atoms of Ni by using  Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ atoms

4.13 mol ×  6.022 × 10²³ atoms /1 mol

24.87× 10²³ atoms of Ni

Please answer quick
2. Imagine you have two beakers. Both beakers are filled with the same amount of water. The water in both beakers is the same temperature as well. You add 50 g ofSubstance A to the first beaker, and 50 g of Substance B to the second beaker. After stirring both beakers, there is a small pile Substance A at the bottom of the first
beaker. None of Substance B is visible in the second beaker. Which of the following statements is true?
A. Substance A is less soluble in water than Substance B.
B. Substance A is more soluble in water than Substance B.
C. Substance A is not soluble in water,
D. Substance B is not soluble in water,

Answers

Answer:

A. Substance A is less soluble in water than Substance B.

Explanation:

Solubility: The term "solubility" is described as a specific property determining the capability of a particular solute, substance to get dissolve in a "solvent". Thus, solubility is being measured with respect to the "maximum amount" of a specific solute that is dissolved or mixed in a solvent at "equilibrium". After the given process, the resultant solution is referred to as a saturated solution.

In the question above, the correct answer is option-A.

A compound has an empirical formula of CH2 and a molar mass of 56 g. What is its molecular formula?
O C5H10
O C4H8
O C3H6
O C2H4

Answers

Answer:

C4H8

Explanation:

First find the molar mass of CH2;

2(1.01) + 1(12.01) = 14.03g

Now divide the molar mass of the compound by the molar mass of CH2;

56g/14.03g = 3.9914 Round to nearest whole number = 4

Multiply CH2 by 4 to get the molecular formula;

CH2* 4 = C4H8

Answer:

C4H8

Explanation:

calculate the amount of grams each formula turns out to be

C5 = 60.05g  well C5 is already larger than 56g so its not A

C4= 48.04g and H8= 8.08g, 48.04 + 8.08 = 56.12 so this is really close to our answer

C3 = 36.03g and H6= 6.06g, 36.03 + 6.06 = 42.09

C2 = 24.02g and H4 = 4.04g, 24.02 + 4.04 = 28.06

so the answer would be C4H8

Lewis diagrams of molecules of three different hydrocarbons are shown above. Which of the following claims about the molecules is best supported by the diagrams?

Answers

Answer:

D

Explanation:

Seeing the Lewis formula for each of the molecules, we can attempt to write the condensed structural formula for each.

What we notice is that while there are purely single bonds between the carbon atoms in the first molecule, there is a double bond in the second molecule and a triple bond in the third

What we can deduce from this is that these are alkanes , alkenes and alkynes

The alkynes have the strongest of the three bonds and thus they have the strongest bonds in the mix

Since molecule 3 is an alkyne, then we can say that it has the strongest of the bonds

The correct claim about the molecules that best supports the diagrams is :

( D ) The strongest carbon to carbon bond occurs in molecule 3  

The first molecule ( molecule 1 ) is an alkane because the molecule is made up of only single bonds connecting the carbon atoms.

while the second mole ( molecule 2 ) is an alkene because of the presence of a double bond connecting carbon atoms.

and the third molecule ( molecule 3 ) is an alkyne because of the presence of a triple bond connecting carbon atoms.

Therefore  Alkynes have the strongest of of bonds between its carbon atoms  because of the presence of a triple connecting carbon atoms.

Hence we can conclude that The strongest carbon to carbon bond occurs in molecule 3

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PLZ ANSWER WILL GIVE BRAINLIEST ASAP
Given the data below, what substance does not show a reaction for any of the tests? Hint: (+)= reaction occurred, (-)= no reaction

unknown
salt
Corn starch
Gelatin

Answers

Answer:

Salt

Explanation:

It has all -


Approximately how many joules of heat energy are released when 50 grams of water are cooled from 70°C to 60°C?

Answers

Answer:

Q = -2090 J

Explanation:

Given that,

Mass, m = 50 g

Water is cooled from 70°C to 60°C.

We need to find how many heat energy are released. Heat released is given by :

[tex]Q=mc\Delta T[/tex]

c is the specific heat of water, [tex]c=4.18\ J/g-C[/tex]

Putting all the values,

[tex]Q=50\times 4.18\times (60-70)\\\\Q=-2090\ J[/tex]

So, the heat energy released is 2090 J and negative sign shows heat is released.

Answer:

it is 2,100J

Explanation:

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