create a hypothesis that can be tested in an experiment​

Answer:

6

Explanation:

The number of hydrogen atoms in the given compound is 6 atoms.

  Given compound is:

              3H₂CO₃

An atom is the smallest indivisible particles of an element.

  In the compound;

             3H₂CO₃

          Elements          Number of atoms

               H                       3(2)  = 6

               C                       3(1)   = 3

               O                       3(3)    = 9

The number of hydrogen atoms in the compound is 6

Answer:

purppurppurppurppurppurp

Answer:immiscible

Explanation:

When two liquids combine to form a new liquid, we call the liquids “miscible.” When two liquids do not mix together and instead form layers, we call them “immiscible.” The chemical properties of the liquids will determine if they will mix or not.

Answer:

1

Explanation:

outershell atoms of an element are also known as valency of that element

so the valency and number of elctron in the outershell of a sodium atom is +1.

hope this will help

mark me as brilliant

Answer:

Unlike the other planets of the solar system, Uranus is tilted so far that it essentially orbits the sun on its side, with the axis of its spin nearly pointing at the star. This unusual orientation might be due to a collision with a planet-size body, or several small bodies, soon after it was formed.

Explanation:

the axis is vertical

Answer:

The axis is pointing towards the sun!!!

Explanation:

Answer: 36.25

Explanation:

Answer:

36.25

Explanation:

Answer:

SARS was an epidemic, but not a pandemic.

Explanation:

It is correct to say SARS was an epidemic but not a pandemic.

SARS outbreak occurred between 2002 - 2004 in China. It was localized to the People's republic and hence, an epidemic.

The recent outbreak of disease in 2020 on the other hand is a pandemic. The infectious disease had a global coverage.

Answer:

sars was an epidemic , but not an pandemic

Explanation:

Answer:

Explanation:

I am sorry but the graph is not given

Answer:

No I don't.

Explanation:

LOL!!

Answer:

6.533 × 10^-21J

Explanation:

The energy of the microwave photon can be calculated using:

E = hf

Where;

E = energy of photon (J)

h = Planck's constant (6.626 × 10^-34 J/s)

f = frequency (9.86 x 10^12 Hz)

Hence, E = hf

E = 6.626 × 10^-34 × 9.86 x 10^12

E = 65.33 × 10^(-34 + 12)

E = 65.33 × 10^(-22)

E = 6.533 × 10^-21J

The energy of the microwave photon is

6.533 × 10^-21J

Answer:

Its tetraoxygen

Explanation:

Answer:

Agree (see explanation)

Explanation:

I do agree with this statement of practicality. According to my research and viewership of phrase diagrams for both substances, water enters a similar form of “smoke” or “steam” at incredibly hot temperatures usually secluding to temperatures of over 200 degrees Fahrenheit (100 degrees Celsius) versus carbon dioxide of which enters this state at room temperature (60-70 degrees Fahrenheit). In order for either of these events to occur in this form, both must undergo procedures of sublimation where solids transfer directly from solids to gases, skipping the liquid state. Water contains ionic hydrogen bonds of which are incredibly strong particle arrangements, therefore requiring much higher temperatures to divide and individualize these particles forming high pressure and kinetic energy. Since carbon dioxide is formed of covalent bond ship, the intermolecular forces are relatively weak making the process of sublimation quite instant when this substance experiences exposure to specific temperatures, typically temperatures that we consider “normal”.

Hopefully I helped anyone understand this, and I apologize for being late to this question.....very late.

Answer:

0.033 mole

Explanation:

The following data were obtained from the question:

Initial mole (n1) = 0.1 mol

Initial volume (V1) = 2.1 L

Final Volume (V2) = 0.7 L

Final mole (n2) =?

Since the temperature and pressure is constant, then the number of mole remaining in the balloon can be obtained by using the following formula as illustrated:

V1 /n1 = V2 /n2

2.1/0.1 = 0.7/n2

21 = 0.7/n2

Cross multiply

21 × n2 = 0.7

Divide both side by 21

n2 = 0.7/21

n2 = 0.033 mole

Thus, 0.033 mole of the gas is remaining in the balloon.

Answer:

6 sigma and 1 pi

Explanation:

1s2 2s 2p6 3s2 3p6

Explanation:

calcium has lost 2 electrons.

Answer:

d . a and b are correct

Explanation:

The law of superposition allows us to determine the age of rock layers and also that of the fossils within them.

The law of superposition states that "in an undeformed sequence of strata, the oldest rock layer is at the bottom and the youngest is on top".

Answer:

Atomic Number: 1

Atomic Mass: 1

Explanation:

Atomic number = # of protons

Atomic mass = # of protons + # of neutrons

Answer:

I believe it is B

Explanation:

Answer:

hey

Explanation:

Answer:

hi

Explanation:

UwU

Answer:

I believe it is the first option.

Answer:

I believe it is "A 15 lb. cat sitting 3 feet of the ground in the window"

Explanation:

I think it is  this one because it is one off the heaviest cats and it is this one because this 15 pound cat is higher than the other one. I hope you get an A

Students can address water and air pollution by organizing seminars to raise awareness and educate others about the issues,

A. Organize seminars

B. recycling and waste disposal

Water pollution and air pollution are significant environmental hazards that require collective efforts to address. Students can play a crucial role in raising awareness and taking action to mitigate these issues. Here are the appropriate answers from the given options:

What can students do to address these environmental hazards?

A. Organize seminars

B. recycling and waste disposal

A. Organize seminars: Students can organize seminars or workshops to educate other students and the community about the deteriorating environmental conditions and the steps needed to improve the area. By sharing knowledge and information, students can raise awareness about the causes and impacts of water and air pollution, as well as the potential solutions to mitigate them. Seminars can provide a platform for experts, scientists, and environmentalists to share their expertise and inspire action.

B. Recycling and waste disposal: Encouraging other students to volunteer for workshops about recycling and waste disposal is an effective step toward addressing environmental hazards. By promoting proper waste management practices, such as recycling, composting, and reducing single-use plastics, students can contribute to minimizing pollution and conserving resources. These workshops can educate students on the importance of responsible waste disposal and provide practical tips and techniques to implement in their daily lives.

In summary, students can address water and air pollution by organizing seminars to raise awareness and educate others about the issues, as well as by promoting recycling and proper waste disposal practices. Through these actions, students can foster a culture of environmental stewardship and inspire positive change in their communities.

for more such question on pollution visit

https://brainly.com/question/22517940

#SPJ8

Answer:

Explanation:

The answer is 2-7-1, because the second shell isnt full and it already has a third shell.

Moles of Carbon dioxide : 1.2

A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reagents and products.

Reaction(balanced)

C₃H₈ + 5O₂=> 3CO₂ + 4H₂O

mol of O₂ :

[tex]\tt \dfrac{64}{32}=2[/tex]

mol of CO₂ :

[tex]\tt \dfrac{3}{5}\times 2=1.2[/tex]

Answer:

C. Period

Explanation:

The elements from this section of the periodic table belongs to the same period.

A period on the periodic table is a horizontal arrangement of elements according to their atomic number.

Answer:

10.01461 kilojoules of thermal energy are absorbed when 98.5 g of water is heated from 24.5 ° C to 48.8 ° C

Explanation:

Sensible heat is the amount of heat that a body absorbs or releases without any changes in its physical state (phase change) causing a change in temperature.

The equation that allows to calculate heat exchanges in this case is:

Q = c * m * ΔT

where Q is the heat exchanged by a body of mass m, constituted by a substance of specific heat c and where ΔT is the change in temperature.

In this case:

Replacing:

Q= 4.184 [tex]\frac{J}{g*C}[/tex] *98.5 g* 24.3 °C

Solving:

Q=10,014.61 J

Since 1 J is equal to 0.001 kJ, then you can apply the following rule of three: if 1 J is equal to 0.001 kJ, then 10,014.61 J is equal to how many kJ?

[tex]kJ=\frac{10,014.71 J*0.001 kJ}{1 J}[/tex]

kJ=10.01461 kJ

10.01461 kilojoules of thermal energy are absorbed when 98.5 g of water is heated from 24.5 ° C to 48.8 ° C

Answer:

No

Explanation:

We cannot identify an atom without knowing numbers of protons in the atom.

The number of neutrons is the amount of neutrally charged particles in an atom. These subatomic particles occupy the dense nucleus with the protons.

Answer:

4.5 moles of H2O.

Explanation:

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

C2H5OH + 3O2 —> 2CO2 + 3H2O

From the balanced equation above,

1 moles of C2H5OH reacted to produce 3 moles of H2O.

Finally, we shall determine the number of mole of H2O produced by the reaction of 1.5 moles of C2H5OH. This can be obtained as follow:

From the balanced equation above,

1 moles of C2H5OH reacted to produce 3 moles of H2O.

Therefore, 1.5 moles of C2H5OH will react to produce = 1.5 × 3/ 1 = 4.5 moles of H2O.

Thus, 4.5 moles of H2O will be produced.