How many kilojoules of heat are required to heat 2550 grams of water from 17.5°C to 100.0°C?

Please help, what inner planet has the most moons?

Ket [755]

Mars is the inner planet with the most moons. Earth has one moon, Mars has two and Mercury and Venus have none.

7 0

2 years ago

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Express each of the following numbers in scientific notation with correct significant figures:

Kobotan [32]

A) 7.110 x 10^2
B) 2.39 x 10^-1
C) 9.0743 x 10^4
D) 1.342 x 10^2
E) 5.499 x 10^-2
F) 1.00000 x 10^4
G) 7.38592 x 10^-7

3 0

3 years ago

Pb + PbO2 + 2H2SO4 2PbSO4 + 2H2O How many moles of water are produced if 5.43 mol PbO2 are consumed?

tresset_1 [31]

5.43 times 2 = 10.86

10.9 is your answer.

4 0

2 years ago

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affects of cholera toxin on adenylyl cyclase the gram negative bacterium vibrio cholerae produces a protein cholera toxin that i

NARA [144]

Answer: the effects of cholera toxin on cAMP in the intestinal cells is that it INCREASES cAMP production.

Explanation:

Vibrio cholerae is a gram negative bacterium which produces a protein cholera toxin that is responsible for the characteristic symptoms of cholera such as

watery diarrhea, vomiting, rapid heart rate, loss of skin elasticity, low blood pressure, thirst, and muscle cramps. There is need for body fluids and Na replacement to avoid severe dehydration results which may lead to death.

Cyclic adenosine monophosphate( cAMP) is a derivative used for intracellular signal transduction in organisms. The cholera toxin produced by the bacteria INCREASES the production of cAMP through its polypeptides( which consist of active protomer and binding protomer). The cholera toxin first binds to cell surface receptors, the protomer then enters the cell and bind with and activate the adenylate cyclase. Increasing adenylate cyclase activity will INCREASE cellular levels of cAMP, increasing the activity of ion pumps that remove ions from the cell. Due to osmotic pressure changes, water also must flow with the ions into the lumen of the intestinal mucosa, dehydrating the tissue. I hope this helps, thanks.

5 0

2 years ago

What is the meaning of ground state energy?

viktelen [127]

<h2>The ground state of a quantum-mechanical system is its lowest-energy state; the energy of the ground state is known as the zero-point energy of the system. An excited state is any state with energy greater than the ground state. In quantum field theory, the ground state is usually called the vacuum state or the vacuum..</h2>

hope it helps you ❣❣ 

Mark me as brainliest 

8 0

2 years ago