How many protons are in an atom of oxygen?


6

8

16

24

Answer:

Yeah, probably population.

Explanation:

Population as in the species' population.

Answer:

Ionic

Explanation:

Lithium is an alkali metal and form an ionic bond by donating an electron.

Fluorine is a halogen and forms ionic bonds by accepting an electron.

The electronegativity difference between lithium (0.98) and fluorine (3.98) is 3 Pauling units. Usually, when elements have a difference of 1.7 (or 2.0) Pauling units the bond is classified as ionic.

Hope this helps! If you have any more questions or need more explanation please leave a comment down below and I will reply ASAP. Good luck!

Answer:

Snow forms when the atmospheric temperature is at or below freezing, and there is a minimum amount of moisture in the air. Within a cloud, water droplets condense onto one another, causing the droplets to grow. When these water droplets get too heavy to stay suspended in the cloud, they fall to Earth as rain

Explanation:

When water vapor cools and condenses forms clouds, that is, return to water or rain.

When the temperature in the atmosphere is at or below freezing 0 degrees Celsius and there is a minimal amount of moisture in the air, snow forms.

Clouds are formed by evaporating water or ice from the Earth's surface, or by plants releasing water and oxygen as a result of photosynthesis.

Water evaporates, or rises from the Earth's surface into the atmosphere, creating a gas called water vapor.

When water vapor cools and condenses—that is, returns to liquid water or ice—it forms clouds.

A significant snowstorm or blizzard requires three factors:

Thus, these are the conditions for snow and rain.

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Answer:

C

Explanation:

Santiago mare two powdery solid substances. hope this helped

The diagram which shows the repeating groups of atoms that make up the ending substances is C.

Repeating group is defined as a group of fields or attributes that show up repeatedly in a database table. It is a widespread issue that affects both big and small businesses, and it can have a variety of effects. An attribute that appears more than once in each row of a table is known as a repeating group. A relational table cannot contain "repeating groups," as they are a feature of pre-relational systems.

On most metals, a reaction could be seen when acids were applied. A gas and heat were created when the metal vanished. The new chemicals' chemical characteristics are distinct from those of the original substances.

Thus, the diagram which shows the repeating groups of atoms that make up the ending substances is C.

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Answer:

Explanation:

Sorry dunno

Answer:

B:Oxygen and Selenium

Explanation:

They both have six valence electrons.

Answer:

#3 i think (:

Explanation:

Answer: when hot air and cold air clash they spin creating a vaccum which causes a tornado

Explanation:

Answer:

A tornado is a wind tunel (that's probaly spelled wrong). It basically happens when wind is spinning in a circle, and it keeps picking up. This is a reason why tornados don't survive in hilly places.

Explanation:

I think...

Answer:

C, A pulling force

Explanation:

It is pulling it to it not repelling or pushing it away. It is also not an electrical force as it is a magnetic one.

Answer:

(B) individual organisms

Brainliest

Answer:

Mechanical I believe is the answer.

Explanation:

Answer:

Explanation:

Remember that the key is the water so

using the formula q=m*s*deltT

We have the mass 2000g

we have the specific heat of water which is 1.00 cal/ g C

and the final temperature 20 C

Remember that delt T is the change in temperature meaning (Tfinal - Tinitial) Assuming that the water is at room  temperature (25 C)  before starting the reaction then

q= (2000 g)(1.00 cal/g C)(20-25)

q= -10, 000 cal  

if you want you can convert to joules by multiplying by 4.314 J

In more simpler terms - If all the heat released was absorbed by the water, and it takes 1 calorie of heat to raise

the temperature of 1 gram of water by 1°C that is a total of 20 times 2000 or 40,000 cal.

or 40 kilocalories. If you want it in joules, there are 4.184 joules to one calorie so it is

4.184 times 40 or 167.36 kilojoules.

Hope that helped

A snack that, when burned, heats 2,000 g of water by 20 °C, releases 4.0 × 10⁴ cal (1.7 × 10⁵ J).

A snack bar is burned in a calorimeter and heats 2,000 g  (m) of water by 20 °C (ΔT).

We can calculate the heat absorbed by the water (Qw) using the following expression.

[tex]Qw = c \times m \times \Delta T = \frac{1cal}{g.\° C } \times 2,000 g \times 20 \° C = 4.0 \times 10^{4} cal[/tex]

where,

According to the law of conservation of energy, the sum of the heat absorbed by the water (Qw) and the heat released by the combustion (Qc) is zero.

[tex]Qw + Qc = 0\\\\Qc = -Qw = -4.0 \times 10^{4} cal[/tex]

Finally, we can convert -4.0 × 10⁴ cal to J using the conversion factor 1 cal = 4.18 J.

[tex]-4.0 \times 10^{4} cal \times \frac{4.18 J}{1cal} = 1.7 \times 10^{5} J[/tex]

A snack that, when burned, heats 2,000 g of water by 20 °C, releases 4.0 × 10⁴ cal (1.7 × 10⁵ J).

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Answer:

B

Explanation:

Answer

yes

Explanation:

the law of conservation of mass hold true in this case burning magnesium strip is explained by this equation 2 Mg (s) + O2 (g) -> MgO (s)So the lighter magnesium, after reacting with oxygen in air, forms the heavier magnesium oxide. molar mass of magnesium and magnesium oxide are 24g and 40g respectively. So the same ratio 24:40 (i.e. 3:5) is maintained in the given masses of 48g and 80g, which means mass is conserved in the reacion.

Answer:

3

Explanation:

Answer:

I think this evidence supports this claim because Evidence Card b says “One man got sick, but his two children did not. He used water from Whip River. He used  the cube to heat the first pitcher of water, which he gave to his kids, and then reused the  cube without reheating for the second pitcher, which he drank himself.”

Explanation:

The correct reasoning for the given claim is shown by evidence 2.

Pasteurization is a method of disinfecting water without boiling it using heat or radiation.

Evidence 2 is the correct reasoning to explain the fact that if we follow the instructions the kit will always heat the water above the correct temperature for pasteurization (65°C). Second evidence is that “One man got sick, but his two children did not. He used water from Whip River. He used  the cube to heat the first pitcher of water, which he gave to his kids, and then reused the  cube without reheating for the second pitcher, which he drank himself.”

Hence evidence 2 is the correct reasoning.

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Answer:

Thanks for the free points!

and your really pretty! :)

have a great day!

~God bless~

protons and the nucleus

Because protons has positive charge. Neutrons have no charge. Nucleus contains protons and neutrons, so it adds up to result in a positive charge.

Answer: I got you! Here are my answers !

Explanation:

1) 14/2=7m/s^2

2)30-0/12=2.5m/s^2

3)37-22/2=7.5m/s^2

4)12-0/8=1.5 km/2^2

5)8-0/3=2.7m/s^2 (cyclist) (Car) 30-0/8=3.75m/s^2

6)70-0/1.94x10^-3=36000km/h^2

7)10-2/4=2m/s^2

Make this brainliest! Thank you!

Answer:

Speed in a specific direction

Explanation:

Answer:

It does not indicate the car's direction.

Explanation:

Since velocity is both magnitude and direction, the speedometer measures speed but does NOT measure velocity

Answer:

B I think sorry if I get this wrong

Answer:

Particles become sorted on the basis of density, because of the energy of the transporting medium. High energy currents can carry larger fragments. As the energy decreases, heavier particles are deposited and lighter fragments continue to be transported. This results in sorting due to density.

Explanation:

Answer:

inertia

Explanation:

Answer:

Inversely

Explanation:

Answer:

Chick-fli-a

Explanation:

Answer:

Chick-Fil-A

Explanation:

Answer:

The kinetic theory of matter explains that all matter is made of particles which are constantly moving/have energy. The energy varies depending on the temperature of the matter, therefore determining if the matter is solid, liquid, or gas. When the energy of a particle is increased or decreased, a phase change can occur.