Pls help 2 parts science

Answer:

The main difference between the Ionic and Covalent Compounds is the methodology of formation. One of the atoms in the bond shall lose an electron to initiate the bond to form an ionic compound while the Covalent compound is formed by sharing the electrons among the atoms.

Explanation:

Explanation:

.........................:)

The final volume of the gas at the final pressure can be determined using Boyle's law. The volume of the gas at a pressure of 2.75 atm is 1.03 ml.

Boyle's law states that, at constant temperature, the volume of a gas is inversely  proportional to the pressure of the gas.

Hence, PV = a constant.

Let P1 and V1 be the initial pressure  and volume and P2 and V2  be the final pressure and volume then we can write it as,

P1 V1 = P2 V2.

Given that, P1 = 1.89 atm

P2 = 2.75 atm

V1 = 1.50 ml

V2 = P1 V1 / P2

V2  = 1.89 atm × 1.50 ml/ 2.75 atm

      = 1.03 mL.

Therefore, the volume of the gas at a pressure of 2.75 atm is 1.03 ml.

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Answer: Answer is A

Explanation:

The endoplasmic reticulum and the Golgi complex together make the endomembrane system. They are like factory and shipping departments. thus, option A is correct.

The endoplasmic reticulum (ER) is the membrane-bounded organelle that is a network-like structure that even has ribosomes attached to it (RER). They are the site of lipid and protein synthesis in the eukaryotic cell.

Golgi on the other hand, are organelle present in the cytoplasm that is the site of the packaging, storage, and transportation of the lipids produced by the ER to the other sites or out of the cell.

The endoplasmic reticulum act as a factory that manufactures lipids and proteins, whereas the Golgi act as a shipping department that packs and transports the molecules in vesicles to various sites.

Therefore, option A. ER acts as the factory and Golgi as the shipping department.

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Answer:

Mouth

Explanation:

Both mechanical and chemical digestion occur in the mouth. Teeth grind and break up food (mechanical), while an enzyme in saliva called amylase begins to break down carbohydrates (chemical). After it is swallowed, the chewed food (now called a bolus) moves down the esophagus.

Hope this helps! :)

Answer:

when two substances come together to create heat.

Explanation:

there have to be something to create heat.

Answer:

hello your question is incomplete below is the missing part of the question

Keisha makes a table to compare plasmas and solids.

Plasma      

Solid

Kinetic energy

X

Density

Y

Which labels belong in the cells marked X and Y? X: High Y: High X: High Y: Low X: Low Y: High X: Low Y: Low

answer : X: High Y:High

Explanation:

The labels that belong in the cells are ;   X: High Y:High   this because when comparing Plasma and Solids the variables; X and Y have positive correlation hence when X is High, Y will be High as well

Answer:

a

Explanation:

Answer:

is there no options?

Explanation:

Answer:

26.314KJ

Explanation:

The specific heat capacity formula is : [tex]Q=mc[/tex]Δ[tex]T[/tex], where Q is the heat energy, m is the mass, c is the heat capacity of the material, and delta T is the change in temperature.

We know from the question that m = 386grams and delta T = 100.0°C - 24.0°C = 76.0°C. From a simple search, we know the specific heat capacity of aluminum = 0.897J/g°C (this changes a little bit depends on the website you use, but the value should be very similar). Let's apply the formula:

[tex]Q=mc[/tex]Δ[tex]T[/tex]

[tex]Q = 386g (0.897J/gC)(76.0C)[/tex]

[tex]Q = 26314J[/tex] or [tex]26.314KJ[/tex]

Round according to your teacher's specification (example: significant figures) if needed.

Answer:

the answer is c I believe

To solve such this we must know the concept of combustion reaction. Therefore, the correct option is option A that is when the combustion of a reactant that contains carbon occurs, carbon dioxide will be one of the products.

Chemical reaction is a process in which two or more than two molecules collide in right orientation and energy to form a new chemical compound. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, double displacement reaction.

Combustion reaction is a reaction in which a substance, basically hydrocarbons burns in presence of oxygen to produce carbon dioxide and water and heat in large amount. When the combustion of a reactant that contains carbon occurs, carbon dioxide will be one of the products is the correct statement.

Therefore, the correct option is option A that is when the combustion of a reactant that contains carbon occurs, carbon dioxide will be one of the products.

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The amount of W : = 1.22 x 10²⁰

Given

5.6 mg of a micro computer

Required

The amount of chip

Solution

A mole is a number of particles(atoms, molecules, ions)  in a substance

1 mole = 6.02.10²³ particles  

Can be formulated :

N = n x No

N = number of particles

n = mol

No = 6.02.10²³ = Avogadro's number

mass = 5.68 mg = 5.68 x 10⁻³ g

mol :

= mass : MW

= 5.68 x 10⁻³ g : 28 g/mol

= 2.03 x 10⁻⁴

The number of atoms :

= 2.03 x 10⁻⁴ x 6.02.10²³

= 1.22 x 10²⁰

Answer:

3.5 cubic centimeters

Explanation:

Answer:

17.03052 or 17 for a whole number

Explanation:

Apsidal precession—The major axis of Moon's elliptical orbit rotates by one complete revolution once every 8.85 years in the same direction as the Moon's rotation itself.

Answer:

1.5 atm

Explanation:

Answer:

Distance=160 meters, Displacement = 40 meters right

Answer: Potassium is 39.10 g/mol

Explanation: The numbers below the element are the molar mass.

Answer: Potassium(K): 39.10 g/mol

Explanation:

Answer:

Density

Explanation:

The density, of a substance is its mass per unit volume. The symbol most often used for density is ρ, although the Latin letter D can also be used. Mathematically, density is defined as mass divided by volume: {\displaystyle \rho ={\frac {m}{V}}} where ρ is the density, m is the mass, and V is the volume

Answer: Density

Explanation: Convection usually happens when an object heats up, which causes its density to change, such as a lava lamp.

When the wax in a lava lamp heats up, the wax's density decreases due to the energy from the heat, causing it to rise in the liquid to the top, where it cools down and becomes more dense, then falls back to the bottom.

Answer:

Increase

Explanation:

According to Gay-Lussac Law,

The pressure of given amount of a gas is directly proportional to its temperature at constant volume and number of moles.

Mathematical relationship:

P₁/T₁ = P₂/T₂

If the initial temperature and pressure is standard,

Pressure = 1 atm

Temperature = 273.15 K

then we increase the temperature to 400.0 K, The pressure will be,

1 atm / 273.15 K = P₂/400.0K

P₂ = 1 atm × 400.0 K / 273.15 K

P₂ = 400.0 atm. K /273.15 K

P₂ = 1.46 atm

Pressure is also increase from 1 atm to 1.46 atm.

Answer:

Lead I think is one I'm not completely sure but I know they're similar in some ways

Answer:

good: We can reuse the fuel from nuclear energy projects.

bad 1: There is always the threat of an accident when working with nuclear energy

bad 2: Exposure to nuclear materials or uranium can create health problems

Explanation:

Answer:

benefits: lots of energy produced from small amounts of uranium it also does not pollute the air

risks: A nuclear power accident can make an entire region unlivable, have a negative effect on the environment for years to come, kill thousands of people, create a spike of cancer rates within nearby communities, kill off endangered fish populations (depending on their location), destroy local food supplies, etc.

Nuclear energy can also be turned into explosive devices that can be used to create powerful yields Nuclear energy creates harmful waste. Nuclear energy burns cleanly, which is seen as an advantage. It also creates radioactive waste that is toxic to the environment and dangerous to humans. If this waste is not disposed of properly, then the damage it causes may last for hundreds, if not thousands, of years. In the United States, damages that are directly associated with the storage of nuclear waste materials is estimated to be at least $38 billion. Politico reports that the costs could be as high as $65 billion.

Explanation:

Answer:

D

Explanation:

D is the answer lolyeshsjs

Answer:

Elements lose electrons.

Explanation:

Answer:

c

Explanation:

Answer:

b. equal too

Explanation:

According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants

Answer:

Lungs

Explanation: The two organ systems that work together to provide the cells with oxygen and remove carbon dixoide from the body are the lungs.

Circulatory system and Respiratory system work together to provide cells with oxygen and to remove carbon dioxide from the body. So, the correct options are (C) and (D).

Respiratory system is a biological system which consists of specific organs and structures. It helps to breathe. It consists of lungs, airways, blood vessels and some muscles with work together with lungs are also the part of Respiratory system. It helps to move out the oxygen throughout the body and helps to remove the carbon dioxide from the body.

Functions of Respiratory System:

1. It allows to smell

2. It delivers oxygen to the cell

3. It removes carbon dioxide from the body.

4. It protects the airways from the harmful substance.

The respiratory system has many different parts that work together to help you breathe. It includes:

1.Mouth and nose

2. Sinuses

3. Pharynx (throat)

4. Trachea (Windpipe)

5. Bronchial tubes

6. Lungs

Thus, Circulatory system and Respiratory system work together to provide cells with oxygen and to remove carbon dioxide from the body. So, the correct options are (C) and (D).

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Answer:

Atmospheric Rivers a.k.a. The pineapple Express