Based on the Periodic Table, explain why Na and Khave similar chemical properties

Answers

Answer 1

Answer: The Group 1 elements, which include lithium (Li), sodium (Na) and potassium (K) are also known as the alkali metals. They all have one electron in the outer shell and so they have similar properties.

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How many moles of h2o would be produced from 1.75 moles of o2 with unlimited c3h6

Answers

1.75 (moles O2) × 6 (moles H2O) ÷ 9 (moles O2) = 1.17 (moles H2O)

You have to convert moles of O2 into moles of H2O so it's the number of moles you start with (1.75 O2) × the number of moles from the element you want (6 H20), then ÷ by the number of moles that the element that you already have (9 O2).

Which of these are physical changes in matter check all that apply .

Answers

Answer:

boiling water

sharpening a pencil

freezing water

What answers are there? you didn't add them.

physical change and chemical change.

physical change affects a substance's physical properties, and a chemical change affects its chemical properties.

When you accidentally overfill a water glass, the water takes on a dome-like or convex shape, but a half-filled water glass takes on a concave shape, in which the water is higher at the sides of the glass. This is because:Within the glass, adhesive forces dominate, and on top of the glass, cohesive forces dominate.

Within the glass, water tries to maximize its surface area, and on top of the glass, water tries to minimize its surface area.

Water's surface tension is greater inside the glass than on top of the glass.

Adhesive forces between water and the glass get weaker with height.

Answers

Answer: The correct answer is within the glass, adhesive forces dominate, and on top of the glass, cohesive forces dominate.

Explanation:

Adhesive forces are defined as the molecular forces which are present between different substances. For Example: When water is poured into glass, the molecular forces between the walls of container and water molecules.

Cohesive forces are defined as the molecular forces which are present between same substances.

When water is put in the glass, two types of meniscus form, one is concave meniscus and another is convex meniscus.

Concave meniscus is formed due to adhesive forces and is dominating inside the glass.

Convex meniscus is formed due to cohesive forces and is dominating on the top of glass. As, on the top of glass no walls of glass are present. So, water molecules stick together to other water molecules.

Hence, the correct answer is within the glass, adhesive forces dominate, and on top of the glass, cohesive forces dominate.

The water is higher at the sides of the glass. This is because within the glass, adhesive forces dominate, and on top of the glass, cohesive forces dominate.

Erosion piles up in low places to form:soil and sand
lava and soil
magma and silt
sand and lava

Answers

Soil and sand is the answer to this question

Answer:

suck dryeeeeeeeeeeeeeeeeeeeeeeeeeeeewwkkffjfkv3kmc,kflr

Explanation:

What type of fault usually occurs because of tension?a.
folded
c.
strike-slip
b.
normal
d.
reverse

Answers

Answer:

NOT C

Explanation:

got it wrong

C i think , im not sure

What is the best description of what Becquerel observed in his experiment?

Answers

He is best known for his discovery of radioactivity, first reported just over a century ago in the selection reproduced here. The discovery of radioactivity thus represents a key development in the modern understanding of the atom. Hope this helps. Have a nice day.

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