How many elements do all the “s” orbital span (go across) in each period?
a) 2
b) 6
c) 10
d) 14

The empirical formula : C₁₁O₁₄O₃

The assumption of the compound consists of C, H, and O

mass of C in CO₂ =

[tex]\tt \dfrac{12}{44}\times 2.492=0.680~g[/tex]

mass of H in H₂O =

[tex]\tt \dfrac{2.1}{18}\times 0.6495=0.072~g[/tex]

mass of O :

mass sample-(mass C + mass H)

[tex]\tt 1-(0.68+0.072)=0.248`g[/tex]

mol of  C :

[tex]\tt \dfrac{0.68}{12}=0.056[/tex]

mol of H :

[tex]\tt \dfrac{0.072}{1}=0.072[/tex]

mol of O :

[tex]\tt \dfrac{0.248}{16}=0.0155[/tex]

divide by 0.0155(the lowest ratio)

C : H : O ⇒

[tex]\tt \dfrac{0.056}{0.0155}\div \dfrac{0.072}{0.0155}\div \dfrac{0.0155}{0.0155}=3.6\div 4.6\div 1\\\\\dfrac{11}{3}\div \dfrac{14}{3}\div \dfrac{3}{3}=11:14:3[/tex]

Answer:

Chlorine

Explanation:

Even though chlorine is highly electronegative, the best answer is no, and in this class we will consider chlorine not to form hydrogen bonds (even though it has the same electronegativity as oxygen). This is because chlorine is large and its lone electron is in a diffuse orbital, covering a large area, and thus do not have the high charge density to act as a strong hydrogen bond acceptor. But it does form weak hydrogen bonds in solid crystalline hydrogen chloride at very low temperatures.

Answer:

10=CaF2

11=Na3N

12=MgCl2

Explanation:

Answer:

10. CaF2

11. Na3N

12. MgCl2

Explanation:

75 for all

Explanation:

Answer:

Explanation: Li= Lithium, Na= Sodium, K= Pottasium, Rb= Rubdium Cs= Cesiuna, Fr= Fransium

6. Energy levels increases as if you move down a group during the number of electrons increases again.

7. A charge with higher and effective nuclear charge makes greater attractions to the electrons, pulling the electrons cloud closer to the nucleus makes it in a smaller atomic radius.

8. Ge= Germanium, He= Helium, O=Oxygen, Barium

Answer:

Explanation:

The number of atoms of potassium can be found by using the formula

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

N = 1.65 × 6.02 × 10²³

We have the final answer as

Hope this helps you

Answer:

A. They contain older stars and less gas and dust.

Explanation:

There are three types of galaxies:

Elliptical galaxies are galaxies shaped like an ellipse, while spiral galaxies consist of a flat, rotating disk that contains stars, gas, and dust, and a central concentration of stars called the bulge.

The difference between elliptical and spiral galaxies is in the amount of gas and dust they contain. Spiral galaxies contain large amounts of gas and dust, which means that new stars are born very often. This makes them brighter than relatively dim elliptical galaxies, which contain less gas and dust. This is why fewer new and brighter stars are born in elliptical galaxies, leaving them with older, dimmer stars.

Answer: Reacting 12 g of C with 32 g of O2 to form 44 g of CO2

Explanation: I took the test just now, and the law of conservation of mass means to energy and that is exactly what they do in this answer!  

Answer:

A

Explanation:

Answer:

The ocean holds about 97 percent of the Earth's water; the remaining three percent is found in glaciers and ice, below the ground, in rivers and lakes. Of the world's total water supply of about 332 million cubic miles of water, about 97 percent is found in the ocean.

wait..if you asking about the country it's Brazil✌️

Answer:

1. All red calves i.e. RR

2. All roan calves i.e RW

3. 2 red calves (RR) and two roan calves (RW)

Explanation:

According to this question, a gene coding for fur colour in cattle is involved. Red alleles (R) and white alleles (W) are co-dominant to produce a roan cattle (RW). The possible traits of the following crosses are (see attached punnet square):

1) A red bull (RR) is mated to a red (RR) cow: All red calves i.e. RR

2) A red (RR) bullis mated with white (WW) cow: All roan calves i.e RW

3) A roan bull (RW) is mated with red (RR) cow: 2 red calves (RR) and two roan calves (RW).

Answer:

Yes, NaNO3 is the formula for sodium nitride.

The chemical family that the element iodine should belong to is halogen.

The following information related to the halogen is:

Therefore we can conclude that the chemical family that the element iodine should belong to is halogen.

Learn more: brainly.com/question/13145357

Answer:

6.02 x 10²²molecules

Explanation:

Given parameters:

Mass of CO₂  = 4.4g

Unknown:

Number of molecules in CO₂  = ?

Solution:

To find the number of molecules in the given mass, we have to find the number of moles in the compound first;

   Number of moles  = [tex]\frac{mass}{molar mass}[/tex]  

Molar mass of CO₂  = 12 + 2(16) = 44g/mol

Insert the parameters and solve;

   Number of moles  = [tex]\frac{4.4g}{44g/mol}[/tex]   =  0.1mol

  1 mole of a substance contains 6.02 x 10²³molecules

  0.1 mole of CO₂ will contain 0.1 x 6.02 x 10²³molecules

                                                 = 6.02 x 10²²molecules

Answer: C (1)

Explanation:

H is only the element hydrogen.

Answer:

Home

Home

Slower

Explanation:

A liquid starts changing its phase to gas when the two pressures become the same i.e., vapor and atmospheric.

At a higher altitude the atmospheric pressure lowers so little amount of heat is required for the vapor pressure of water to equalize with the atmospheric pressure at a higher altitude.

The pressure at the Rosa's home will be higher and lower in the campsite.

The boiling point will be higher at her home.

As the boiling point is lower in the campsite the water used in cooking noodles will evaporate faster this may lead to the noodles being under cooked. The water may evaporate before the noodles have cooked. So, the noodles will cook at a slower rate at the campsite and faster in her home.

A. The atmospheric pressure at Rosa's home is higher than her campsite.

B. The boiling point of water at Rosa's home is higher.

C. The noodles will be cooked faster at Rosa's home compared to at the campsite

A. The pressure has been the force that has been exerted by the molecules against each other, The higher altitude has lesser air molecules, which resulted in the lower pressure.

Since the pressure at 33 feet has been higher as than the pressure at 11,000 feet altitude, the atmospheric pressure at Rosa's home is higher than her campsite.

B. The boiling point has been the temperature at which liquids have been converted to gases. With the decrease in atmospheric pressure, there has been a lowering in the boiling point as well.

The atmospheric pressure at Rosa's home is higher compared to her campsite. Thus, the boiling point of water at Rosa's home is higher.

C. The lower atmospheric pressure at the campsite has been responsible for the lower boiling point of the temperature, This implies that water has converted to steam at lower temperatures. The lower temperature of water requires more time for the noodles to be cooked.

Thus, the noodles will be cooked faster at Rosa's home compared to at the campsite.

For more information about the atmospheric pressure, refer to the link:

https://brainly.com/question/1393320

Answer:

conditioned

Explanation:

The best term to describe the behavior of the cat is conditioned.

The cat has been conditioned to respond in a specific way to the pet carrier over time due to certain experiences - most likely, unpleasant ones. With repeated unpleasant experience associated with the per carrier, the cat has been conditioned to dislike/fear the pet carrier and thus, the recorded behavior.

Answer:

conditioned

Explanation:

[tex]\mathrm {Hey, there!}[/tex]

The answer is: Bromine

Oxygen is not similar to flourine, it is not a noble gas with high ionization.

Neon does not have chemical reactions like flourine.

The answer is Bromine! Best of Luck!

Answer:

Br

Explanation:

a) Magnesium, 2.8.2, Group number 2,Metals, They are not non metals.

b) Fluorine, 2.2.5, Group number7, Metal No, Non-Metal yes

c) Carbon, 2,2,2. Group number 4, Metal No, Non-Metal yes

Answer:

A. Acid + base = salt + water

Explanation:

correct for a pex

The correct option is (a) Acid + base = salt + water .

Learn more about Neutralisation here https://brainly.com/question/23008798

#SPJ2

Answer:

2pounds

Explanation:

Given parameters:

Weight of Pedro's book  = [tex]\frac{19}{4}[/tex] pounds

Weight of Blanca's book  = [tex]\frac{17}{7}[/tex] pounds

Unknown:

How much more does Pedro's book weigh more than Bianca's book ?

Solution:

To Solve this problem, let us convert the fractions to decimal;

   Weight of Pedro's book  = 4.75 pounds

   Weight of Bianca's book  = 2.43 pounds

Differences  = 4.75pounds - 2.43 pounds

                     = 2.32 pounds

Estimating gives 2pounds

Answer:

where the following choices??

Explanation:

Answer:

Compression is common at convergent boundaries, tension in divergent boundaries, and shear at transform boundaries.

Explanation:

The three main types of stress go along with the three types of plate boundaries. Rocks can bend and fold. Rocks can also fracture and break.

Answer: D

Explanation:

Answer:

24 atoms

Explanation:

4+10+5+5

Explanation:

Density is an intensive property of any matter. Any given pure sample of a substance will have the same density value.

Density is the mass per unit volume of a compound;

  Mathematically;

    D = [tex]\frac{M}{V}[/tex]  

where M is the mass

          V is the volume

          D is the density

Answer:

CH3CH2COCl consists of three carbon atoms in the parent chain and chloroformyl group(-COCl). Therefore the name of the compound is Propanoyl chloride.

Answer:

D

Explanation: