Factor the following expression using the GCF: 2dr – 4r.
r(2d – 4)
2r(d – 2)
2(dr – 2r)
2r(d – 1)\

Answer

Density of the substance = 10g/cm3.

Explanation:

Answer:

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Explanation:

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Answer:

There isnt anything attached to your question.

Explanation:

Answer:An exothermic reaction may be defined as a type of reaction in which energy is significantly liberated in the form of heat or light. In such types of reactions, energy is generally transferred into the surroundings rather than utilized from the surroundings.

The option "energy from an outside source is continuously being added" represents an endothermic reaction in which heat or light energy is externally been provided. The option "more heat is given off than is put into the reaction" is not absolutely true because exothermic reactions liberate energy but it does not matter if it is higher or lower than that of being put into the reaction.

Therefore, the reactants have more heat energy than the products is a statement that is true about exothermic reactions. Thus, the correct option for this question is C.

Explanation:

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Energy from outside sources is continuously being added, since its an exothermic reaction it always focusses on releasing large amount of energy upon activation and combustion.

It cuts off on giving energy back to its surrounding unlike endothermic reaction where the generated energy is given back to the environment to restore its energy levels.

Therefore, it makes it clear that exothermic reaction is a type of reaction that uses combustion to gather the energy lying around in the surrounding to generate large amount of energy and heat and keeps on producing heat until and unless there is energy in surrounding.



To learn more about exothermic reaction,

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Answer:

in a sandwich ELISA, the goal is to use antibodies to precisely quantify specific antigen present in a solution, such as antigen from a pathogen, a serum protein, or a hormone from the blood or urine to list just a few examples. The first step of a sandwich ELISA is to add the primary antibody to all the wells of a microtiter plate

Explanation:

Brainliest please

Answer:

horse and cart ig lol

Explanation:

char

Answer:

It's the last one PLEASE MARK BRAINLIEST

Answer:

Classification makes it easier for scientists to study certain groups of organisms.

Answer:

+6.

Explanation:

So, a chromium atom here has an oxidation number of +6.

Answer:

39

Explanation:

Relative mass does not need to be calculated as it is listed on the periodic table. Potassium's relative atomic mass is around 39.

Answer: nucleus  

Explanation:

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There are 2 main types of ions one is an atom where the electrons are shared between the atoms. the other is an electron where one atom loses an electron to become a neutral in a charged ion, and the other atom gains the electron to become a charged lon anion.

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Ions with a positive charge are known as cations. Those that are negatively charged are called anions.

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The two main types of bonds formed between atoms are ionic bonds and covalent bonds. An ionic bond is formed when one atom accepts or donates one or more of its valence electrons to another atom. A covalent bond is formed when atoms share valence electrons.

Answer:

the total mass would be greater

Explanation:

adding anything to water will make the mass more

Answer:

Newton's Third Law is showed when they use the air lock to slow down the velocity. The action is the air shooting out from the ship and the reaction is the velocity slowing down. Another action would be the bomb making the whole in the airlock door which will have a reaction of the ship slowing down

Explanation:

Newton's Third Law is showed when they use the air lock to slow down the velocity. The action is the air shooting out from the ship and the reaction is the velocity slowing down.

Newton's Third Law is defined as when two bodies come into contact, they exert forces on one another that are both equal in strength and directed in opposing directions.

Ball bouncing: When a ball strikes the ground, it exerts action force on the surface. The ball bounces back as a result of the ground's reaction force. A bird's wings act as an action force, pushing air downward, and act as a reaction force, pushing the bird upward.

Thus, Newton's Third Law is showed when they use the air lock to slow down the velocity. The action is the air shooting out from the ship and the reaction is the velocity slowing down.

To learn more about Newton's Third Law, refer to the link below:

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My Answer: We can check the superfood or diet plan whether it is complying to FDA standard or not, or another way is to ask a nutritionist or medical doctor whether the products are scientifically sound.

Edmentum Answer: To find out whether a product is scientifically sound, check the FDA standards for the product. Another option is to ask a medical expert, such as a doctor or a nutrition scientist, whether the product is scientifically sound.

Answer:

Oxygen is in group 16 in the periodic table.  All the elements in this group have in common the number of valence electrons in their outer shell (6 valence electrons).  The only reason I can see that they may be considered "mixed"  is because the group includes non metals and metalloids.

Explanation:

Answer:

Q1 part D Q2 part B

Explanation:

After the chemical reaction, the things that you get are known as products.

Answer:

A. New atoms are introduced in the molecules of the substance.

Explanation:

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Have a hot lamp to act as the sun.

Use a rectangular fish tank with a slightly lower place or a small bowl inside as a lake.

Put on a transparent lid which would act like a cloud containing the evaporated water.

Make the lid slanted, without openings, with the higher side away from the bowl of water.

When you turn off the lamp, the water vapor will cool and fall back down.

You can make a slanted floor so the "rain" will flow back into the bowl.

Answer:

1. H - F. (Hydrogen)

2. B - G. (Boron)

3. O - J. (Oxygen)

4. Au - C. (Gold)

5. Co - I. (Cobalt)

6. He - D. (Helium)

7. Na - H. (Sodium)

8. S - A. (Sulfur)

9. K - E. (Potassium)

10. Ag - B. (Silver)

Explanation:

In order to match these together, look at the periodic table and look for the given symbols and their names.

Once you have the PT with you, find the symbols asked and the name of the element should be right below it.

To prepare 250 mL of a D10/NS solution using D10W and a vial of NaCl 4 mEq/mL, you would need 9.6 mL of NaCl. Normal saline (NS) contains 154 mEq/L of sodium chloride (NaCl). To prepare 250 mL of NS, you would need 250 mL * (154 mEq/L) = 38500 mEq of NaCl. Since the vial of NaCl contains 4 mEq/mL, you would need 38500 mEq / (4 mEq/mL) = 9625 mL = 9.6 mL of NaCl. So the correct answer is b. 9.6ml.

Answer:

Anomalies more accurately describe climate variability over larger areas than absolute temperatures do, and they give a frame of reference that allows more meaningful comparisons between locations and more accurate calculations of temperature trends.

Explanation:

Answer:

answer I don't know but I know

Answer:

c

Explanation:

While standing water in the streets and sewers (option A) and poor water quality in rivers and streams (option D) may persist for some time after the flood, they are generally considered short-term changes as they can eventually be remedied through clean-up efforts and restoration programs.

Temporary displacement of organisms (option B) can also be considered a short-term change, as organisms will eventually return to their original habitats once conditions improve.

However, a permanent change in the landscape (option C) such as altered river channels, new water bodies, or changes in topography, can have lasting effects on the ecosystem and its inhabitants. These changes may alter habitat suitability, nutrient cycling, and water availability, which can impact the ecosystem for years or even decades to come.

Answer: C

Explanation:

The landscape could be flooded. Houses and buildings may be restricted.

Answer:

Solar Eclipse happens when the moon gets between the sun and the earth, the moon gets all the light and blocks the earth from getting sunlight.

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Answer:

No, a plastic wire would not conduct electricity. This is because plastic is an insulator that does not allow electric current to flow through it. In a wire, electrical conductivity is provided by the movement of charged particles - typically, electrons. Copper is an excellent conductor of electricity because it has a high number of free electrons that are not bound to atoms and can move through the wire very easily. However, in a plastic wire, the tightly bound electrons of its atoms do not allow for the free flow of charges, thus preventing the passage of electric current.