Started: Feb 22 at 92
Quiz Instructions
Question 2
e
lon Chart
If the standard pressure in a car tire is 38 psi, what is the force exe
the tire if the area of the tire is 12 cm by 18 cm? Round your answ
pound.

HYBRIDIZATION:

Answer:

Hybridization is the idea that atomic orbitals fuse to form newly hybridized orbitals, which in turn, influences molecular geometry and bonding properties. Hybridization is also an expansion of the valence bond theory

Answer: Covalent compounds have bonds where electrons are shared between atoms. Due to the sharing of electrons, they exhibit characteristic physical properties that include lower melting points and electrical conductivity compared to ionic compounds.

hope this helps!

Explanation:

Answer:

Plant fertilization

Explanation:

Hope this helps:) Have a great day

Please give Brainliest if could

Answer:

Usually have a low relief, can be interior, and can be coastal.- are phrases that describe typical features of plains.

The phrase describes a typical feature of plains can be interior.

The art as well as the science of improving the interior of the building to provide a healthier as well as more aesthetically pleasing environment for  people who use it is known as interior design.

Plains are known for their low relief, interior location, as well as coastal location, all of which are characteristics of plains.

Therefore, The phrase describes a typical feature of plains can be interior.

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Answer: C. [tex]2HgO\rightarrow 2Hg+O_2[/tex]

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

The skeletal chemical equation will be:

[tex]HgO\rightarrow Hg+O_2[/tex]

The balanced chemical equation will be:

[tex]2HgO\rightarrow 2Hg+O_2[/tex]

The correctly balanced chemical equation for the reaction [tex]HgO - > Hg + O_{2}[/tex] is: C. [tex]2HgO - > 2Hg + O_{2}[/tex]

The law of conservation of mass states that mass can neither be created nor destroyed; it can only be transferred from one location to another. As a result, the mass of the products is required to be the same as the mass of the reactants.

On both the  reactant and product sides of the reaction, the identical amount of atoms of each element is required. Therefore, the equations used in chemistry are balanced.

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Answer:

Atomic theory is. A

Explanation:

Subject to change if new information is discovered. B. A solution to the problem of differing isotopes. C. Unchanged able D. A descriptive table that lists all of the element

I hope this answered your question.

Answer:

what i need more details

Explanation:

Answer:

Ionic

Explanation:

AgNO3 is also highly soluble in water. Ionic means that the compound is composed of ions.

External fertilization in animals usually occurs in water or in damp areas in a process called spawning.

Answer; 2.531 moles

Explanation:

Answer:

precipitation is when water flows into the ground

Explanation:

.................

Answer:

Put the beaker in the broken glassware disposal and replace the beaker

Explanation:

Any beaker which has a crack could break/shatter if you apply heat. Also, cracked glassware is a lab safety hazard.

of course migration

Explanation:

if you need help again i'll be there.

Answer:

yea its migration

Explanation:

Answer:

true :)

Explanation:

have a great day!!

2.08 × 10⁻¹² mol H₂SO₄

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Stoichiometry

Step 1: Define

1.25 × 10¹² molecules H₂SO₄

Step 2: Identify Conversions

Avogadro's Number

Step 3: Convert

Step 4: Check

Follow sig fig rules and round. We are given 3 sig figs.

2.07572 × 10⁻¹² mol H₂SO₄ ≈ 2.08 × 10⁻¹² mol H₂SO₄

(diagram below)

1. has two electron shells, so draw two rings around the nucleus

2. has 4 electrons, and since the first shell always has two the second shell would have 2 as well (to add up to four). this makes sense, because the description says that Be has 2 valence electrons

3. Draw 4 protons inside the grey circle (the nucleus)

4. Draw 5 neutrons inside the grey circle too (the nucleus)

they don't have to be in any particular order, hope this helps!

Beryllium (Be) atom has 5 neutrons, 4 electrons and 4 protons. It has two electron shells as it is in the second period of the periodic table.

Only two electrons can fit in the first shell, which is the innermost shell. Beryllium has two electrons in its initial shell. There are additionally 2 electrons in the second shell, which is the outermost shell for beryllium. Valence electrons are the moniker for these outermost electrons.

The electron configuration of beryllium is 1s² 2s², where the superscript refers to the number of electrons in each orbital and shell. The two electrons in the 1s orbital of the first shell are denoted by the symbol 1s², while the two electrons in the 2s orbital are denoted by the symbol 2s².

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Answer:

1st page, number a-ENergy is added or absorbed

I cant see the answers on the 2nd page

Explanation:

Answer:

1. A gas is released.

2. Energy is absorbed.

3. Color change.

4. Energy is given off.

5. Change in odor.

Explanation:

Answer:

It is this below

Explanation:

P = m/v

The combustion temperature of a material determines whether a material melts or burns

Materials whose combustion temperatures are lower than their melting point gets burnt instead of melting, because before the temperature of the material is raised up to the melting point temperature,  the materials gets combusted at a lower temperature known as the combustion temperature

Melting is physical change and is controlled by the physical property ( melting point ) while burning is chemical change which is irreversible.

Hence we can conclude that The combustion temperature of a material determines whether a material melts or burns

Answer:

Manipulated/independent variable- DIFFERENT ELECTROLYTES

Responding/dependent variable- BRIGHTNESS OF BULB

Controlled variable- WET CELL

Explanation:

The independent variable, also known as manipulated variable is the variable that the experimenter changes or manipulates in an experiment. In this case where different electrolytes are observed to see which will light a bulb most brightly, the manipulated variable is the DIFFERENT ELECTROLYTES.

Dependent or responding variable is the variable of an experiment that responds to the changes made to the independent variable. It is the variable that is being measured in an experiment. In this case, the BRIGHTNESS OF BULB is dependent on the electrolyte used, hence, it is the responding variable.

Controlled variable or constant is the variable that the experimenter keeps the same throughout the experiment. In this case, the WET CELL is kept constant for all the electrolytes used i.e. it is not changed, hence, the WET CELL is the controlled variable.

Answer:

80.6 g

Explanation:

MgO=24.3+16=40.3 g

48.6/24.3= 2 moles

64/2x16= 2 moles

2x40.3= 80.6g

Answer:

i think it's C

Explanation:

But if it's wrong,im so sorry

Answer:

C.

Explanation:

the answer is C dmitri mendeleev

The humidity in the air affects the evapotranspiration rate from the leaf surfaces. ... The use of fog and mist at this time can reduce the air temperature and increase the humidity within the plant canopy without saturating the plant medium. With more oxygen in the root zone, faster rooting occurs.

Answer:

1.0625 g

Explanation:

Number of moles in 5g of NH4NO3 = 5.0g/80g/mol = 0.0625 moles

Again the balanced reaction equation is;

NH3 + HNO3 → NH4NO3

So,

1 mole of NH3 yields 1 mole of NH4NO3

x moles of NH3 yields 0.0625 moles of NH4NO3

x = 0.0625 moles of NH3

Mass of NH3 = number of moles * molar mass

Mass of NH3 = 0.0625 moles * 17g/mol

Mass of NH3 = 1.0625 g

Answer:

D

Explanation:

Answer:

Explanation:

The reaction is:

C₃H₈ + 5O₂  →  3CO₂  +  4H₂O

We see, that the equation is ballanced.

As we have data from only one reactant, we assume the other is in excess.

Ratio is 1:4 (stoichiometry). We solve this, by a rule of three:

1 mol of propane can produce 4 moles of water

Then, 4 moles of propane, may produce

( 4 . 4 ) /1 = 16 moles of water can be made.

Remember, we always have to work with the limiting reactant.