Which statement about one atom of an element identifies the element?(1) The atom has 1 proton. (2) The atom has 2 neutrons.(3) The sum of the number of protons and neutrons in the atom is 3.(4) The difference between the number of neutrons and protons in the atom is 1.

Answers

Answer 1

Answer: the atom has one proton

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Please show step by step and I will mark you as brainliest answer ❤️

Answers

Answer: The pH of the solution is 13.

Explanation:

pOH is defined as the negative logarithm of hydroxide ion concentration present in the solution.

$pOH=-\log [OH^-]$

We are given:

Concentration of $Ca(OH)_2=0.05mol/dm^3=0.5mol/L$ (Conversion factor: $1L = 1dm^3$ )

1 mole of calcium hydroxide produces 1 mole of calcium ions and 2 moles of hydroxide ions

Concentration of $OH^-=(2* 0.05)=0.1mol/L$

Putting values in above equation, we get:

$pOH=-\log (0.1)\n\npOH=1$

We know:

$pH+pOH=14\n\npH=14-1\n\npH=13$

Hence, the pH of the solution is 13.

If salt is dissolved in water, water serves as the:a. solute.
b. solvent.
c. dissolved medium.
d. none of the above

Answers

b. solvent

solute is the substance being dissolved

Which of the following types of radiation has the greatest ability to penetrate matter

Answers

You did not specify the types, but I believe the answer would be gamma radiation.

Final answer:

Among alpha,beta, neutron, and gamma radiations, gamma radiation has the greatest ability to penetrate matter. It can pass through dense and thick materials, including a few feet of concrete and even lead.

Explanation:

When comparing the ability of different types of radiation to penetrate matter, from least penetrating to most penetrating, the sequence is alpha < beta < neutron < gamma. This means the gamma radiation is the most penetrating type of radiation. Alpha radiation has the least penetration ability and can be blocked by even a thin sheet of paper. Beta radiation has slightly higher penetration power, able to go through about 3mm of aluminum, for instance. Gamma radiation, on the other hand, can penetrate much denser and thicker materials. For example, high-energy gamma radiation can pass through a few feet of concrete, and even lead to a depth of 2 or more centimeters.

Learn more about Radiation Penetration here:

brainly.com/question/31480864

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What is a chemical solution and what are the names of its components?

Answers

Answer:

A chemical solution is defined as a homogeneous mixture of two or more substances. There are two components of chemical solution that include solute and solvent.

Solute is the component that get dissolved in another substance and solvent is the substance that dissolve solute.

For example: carbon dioxide in water. Where carbon-dioxide is solute and water is solvent.

What is true about an ocean current that is moving toward the equatorA. Warm
B. Fast
C. Cold
D. Slow

Answers

Ocean current that is moving toward the equator is cold. The windblown surface currents distribute heat all over the globe through moving the water which is warm away from the equator and the cool water will replace which is from the north and south poles. An example of this is the Gulf Stream which moves warm water towards the Great Britain and Europe.

Explain how you know the numbers of atoms in your formula. Carbon Monoxide

Answers

Explanation:

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