What is the temperature increase of 6.4 kg of water when it is heated by a 7.7

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Answer 1
Answer: if you measure my hairline you will get about 90°

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what is the best definition of an element? a. an element is a substance that cannot be broken down. b. an element is a positively charged particle. c. an element is a substance only found in stars.
Write the correct representation of an element x which consists of 15 electron and 16 neutron?
What is the process that is responsible for the effect that the salt water has on plants?
Both the sympathetic and parasympathetic divisions can be found in the __________ nervous system.

The nucleus of an atom X contains 15 protons and 16 neutrons. a) Determine the number of electrons of this atom.​

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Final answer:

The atom X has 15 electrons.

Explanation:

The number of electrons in an atom is equal to the number of protons. Since the atom X has 15 protons, it also has 15 electrons.

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What happens to the blood which reaches the cells from the capillaries?food and CO2 pass to cells, O2 pass to blood
wastes and CO2 pass to cells, O2 pass to blood
CO2 and O2 pass to cells, wastes pass to blood
food and O2 pass to cells, CO2 and wastes pass to blood

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The blood the reaches the cells from the capillaries food and O2 pass to cells, CO2 and wastes pass to blood. The rest of the choices do not answer the question above.

Answer:

food and O2 pass to cells, CO2 and wastes pass to blood.

Explanation:

29. Some physical changes involve chemical reactions.
TRUE
FALSE

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True. Some physical changes involve chemical reactions. Ice melting is an example of a chemical change in matter

What is the molarity of a solution that contains 0.50 mole of Naoh in 0.5p liter of solution

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The concentration pertains to the molarity of the solution with an equation of mol of solution per liter of solvent.  

M (molarity) = moles of solute/L of solvent

M (molarity) = 0.5 mol NaOH / 0.5 L

M (molarity) = 1 M NaOH

Where would you find a halophile? A. salt flat B. ocean floor C. swamp or marsh D. hydrothermal vents

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Option A. salt flat is the correct answer. A halophile is most likely to be found in a salt flat, as it aligns with the habitat where halophiles are most commonly found due to their ability to thrive in high-salinity conditions.

Halophiles are organisms that thrive in environments with high salt concentrations. Salt flats, also known as salt pans or salt deserts, are large expanses of flat land covered with salt and other minerals. These areas typically form in arid or semi-arid regions where water evaporates, leaving behind concentrated salt deposits.

Salt flats are characterized by their stark, white appearance due to the accumulation of salt crystals on the surface. The high salt content makes these areas inhospitable to many other forms of life, but halophiles have evolved unique mechanisms to tolerate and even benefit from the high salt concentrations.

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Final answer:

A halophile can be found in salt flats, ocean floors, swamps or marshes, and hydrothermal vents.

Explanation:

Halophiles are organisms that can be found in highly saline environments. They have adapted to survive in areas with high salt concentrations. Some of the locations where halophiles can be found include:

  • Salt flats: These are areas where water evaporates, leaving behind a high concentration of salt. Halophiles are able to survive in these extreme conditions.
  • Ocean floors: Certain areas of the ocean, such as saltwater lakes or lagoons, have high salt concentrations. Halophiles have adapted to live in these environments.
  • Swamps or marshes: These areas may have high salt content due to the presence of saltwater or brackish water. Halophiles can thrive in these habitats.
  • Hydrothermal vents: These are underwater geysers that release hot, mineral-rich water. Some hydrothermal vents have high salt concentrations, providing a suitable habitat for halophiles.

Halophiles have unique mechanisms to cope with the osmotic stress caused by the high salt content. They may have specialized enzymes and transport proteins that allow them to maintain proper cellular function in these extreme conditions.

Halophiles play an important role in the ecosystem by contributing to nutrient cycling and serving as a food source for other organisms.

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An 8.5 g ice cube is placed into 255g of water. Calculate the temperature change of water when the ice melts

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To answer this problem, we assume that upon the addition, the ice just melts without the temperature change and just uses the latent heat. The water only uses the sensible heat. Hence the equation is 8.5 g * (80cal/g)*4.1858 (J/g)= 255 g 8(4.18 J/gK)*(ΔT). 80cal/g is the latent heat of vaporization of ice. ΔT is equal to 2.67 Kelvin.