I need help with this gizmos

Answer:

Behaviour is in the form of surface tension.

Explanation:

Answer:

Elements

Explanation:

Elements cannot be broken down into a simpler substance

Answer: 1 mol C8H18 produces 9 mol H2O

Explanation: reaction : C8H18 + 12.5 O2 ⇒ 8 CO2 + 9 H2O

population, community, and biosphere.

Answer:

A

Explanation:

Answer:

A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulae, wherein the reactant entities are given on the left-hand side and the product entities on the right-hand side.

In mathematic equations we use an equal sign (=) for example 2 + 2 = 4, but in scientific chemical equations, we use an arrow (→), for example C + O2→ CO2. To the left of the arrow, we have the 'before' situation. This side represents the substances we have beforethe reaction takes place. They are called the reactants.

Answer:

i think dna crepper act

Explanation:

if wrong then sry

Answer:

law of inertia

Explanation:

Answer:

False

Explanation:

Heat rises, but cold air doesn't. Cold air is heavier than warm air is.

Factors that influence general adaptation syndrome include that of a person’s health, nutrition, sex, ages, race, socioeconomic status, and genetics. These are factors that are either can precipitate a different reaction, while others are modifiable and unmodifiable traits.

In biology, adaptation has 3 related meanings. Firstly, it is the dynamic evolutionary process that fits organisms to their environment, enhancing their evolutionary fitness. Secondly, it is a state reached by the population during that process. Thirdly, it is a phenotypic trait or adaptive trait, with a functional role in each organism, that is maintained and has evolved through natural selection.  Historically, adaptation has been described from the time of the ancient Greek philosophers such as Empedocles and Aristotle. In 18th and 19th century natural theology, adaptation was taken as evidence for the existence of a deity. Charles Darwin proposed instead that it was explained by natural selection.  Adaptation is related to biological fitness, which governs the rate of evolution as measured by a change in gene frequencies. Often, two or more species co-adapt and co-evolve as they develop adaptations that interlock with those of the other species, such as with flowering plants and pollinating insects. In mimicry, species evolve to resemble other species; in Müllerian mimicry, this is a mutually beneficial co-evolution as each of a group of strongly defended species (such as wasps able to sting) come to advertise their defenses in the same way. Features evolved for one purpose may be co-opted for a different one, as when the insulating feathers of dinosaurs were co-opted for bird flight.  Adaptation is a major topic in the philosophy of biology, as it concerns function and purpose (teleology). Some biologists try to avoid terms that imply purpose in adaptation, not least because it suggests a deity's intentions, but others note that adaptation is necessarily purposeful.

Answer: 6. The pressure inside the baloon will be 6.8 atm

7. The final volume is 21.5L at tempearture of 388 K.

Explanation:

Boyle's Law: This law states that pressure is inversely proportional to the volume of the gas at constant temperature and number of moles.

[tex]P\propto \frac{1}{V}[/tex]     (At constant temperature and number of moles)

[tex]P_1V_1=P_2V_2[/tex]  

where,

[tex]P_1[/tex] = initial pressure of gas  = 3.5 atm

= final pressure of gas  = ?

= initial volume of gas  = 32 L

[tex]V_2[/tex] = final volume of gas = 19.3 L

[tex]3.5\times 32=P_2\times 19.3[/tex]  

[tex]P_2=5.8atm[/tex]

Therefore, the pressure inside the baloon will be 5.8 atm

7. To calculate the final volume of the system, we use the equation given by Charles' Law. This law states that volume of the gas is directly proportional to the temperature of the gas at constant pressure.

Mathematically,

[tex]\frac{V_1}{T_1}=\frac{V_2}{T_2}[/tex]

where,

[tex]V_1\text{ and }T_1[/tex] are the initial volume and temperature of the gas.

[tex]V_2\text{ and }T_2[/tex] are the final volume and temperature of the gas.

We are given:

[tex]V_1=13L\\T_1=235K\\V_2=?\\T_2=388K[/tex]

Putting values in above equation, we get:

[tex]\frac{13L}{235K}=\frac{V_2}{388K}\\\\V_2=21.5L[/tex]

Thus it will occupy 21.5L at tempearture of 388 K.

Answer:

I can't see the marble so I don't know

Answer:

3 moles

Explanation:

The balanced chemical equation in this question is given as follows;

C3H8 + 5O2 → 4H2O + 3CO2

Based on the above chemical equation, 1 mole of propane (C3H8) is required to react with 5 moles of oxygen gas (O2)

Hence, according to the question, the number of moles required to react with 15 moles of O2 is given as:

15 × 1 ÷ 5

= 15 ÷ 5

= 3 moles

Answer:

3

Explanation:

A.P.E.X

Answer:

Carbon=about 85.13%

Hydrogen=about 14.26%

Explanation:

Percent composition= (molar mass of element x amount of it)/Molar mass x100

C= 12x3/42.08 x100=about 85.13

H=6x1/42.08 =about 14.26

In Absorption Experiment,

Water location is the independent variable in this experiment.

Room Temperature in the material is dependent variable in this experiment.

Type of a material is a controlled variable in this experiment.

Absorption experiment is nothing but the experiment of absorption of water in a material (sponge).

Experiment requires vessel, water and sponge.

Processor - take a vessel, pour water into it and dip sponge. take out the sponge. After taking of out sponge, water appears to be decreased from the vessel and sponge gets heavier. When we squeeze the the sponge, water drops down. It is because of water is absorbed by the spouge.

There are number of pores in the sponge, which absorbs the water.

Water location is the independent variable.

In this experiment Room Temperature is dependent variable in this experiment rate of absorption increases with increase in the temperature. decrease in the temperature cause to solidify the water. Type of a material is a controlled variable, we can change type of the material.

To know more about variables :

brainly.com/question/14289293

#SPJ7.

Answer:

The atomic mass number is 45.

Hope this helps

Answer:

the sun is pretty smol compared to others

Explanation:

Answer:

Hello there! :) All of these are molecular formulas but F2.

Explanation:

F2 goes by the name flourine and is not F2 in it's chemical makeup. Na2SO4 is also called Sodium Sulfate and is a molecular formula. Everyone knows what H2O is, the molecular formula for water and lastly CO2 is carbon dioxide. Hope this helps!

Answer:

F=Air

Explanation:

Because I took the test hope it helps

Answer:

Option C (6750 J) is the appropriate response.

Explanation:

The given values are:

Mass of iron,

m = 3 kg

Specific heat capacity,

[tex]c_A[/tex] = 0.450

Temperature,

T = [tex]25-20[/tex]

  = [tex]5^{\circ}C[/tex]

Now,

⇒  [tex]Q=mc_A T[/tex]

On substituting the values, we get

⇒      [tex]=3\times 0.450\times 5[/tex]

⇒      [tex]=6.75[/tex]

i.e,

⇒      [tex]=6750 \ J[/tex]