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2 years ago

Why does the sand on a beach get so much warmer than the water on a sunny day?

1 answer:

5 0

It’s because sand is a poor conductor of heat so when the sun warms the sand, the heat is not disturbed evenly. Also the specific heat of sand is is lower than that of water.

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Match the symbol for each element with the name of the element. 1. hydrogen K 2. helium Mg 3. sodium He 4. magnesium H 5. potass

insens350 [35]

Answer:

1. hydrogen - H

2. helium - He

3. sodium - Na

4. magnesium - Mg

5. potassium - K

Explanation:

Hydrogen is the element of group 1 and first period. The atomic number of hydrogen is 1 and the symbol of the element is H.

The electronic configuration of the element hydrogen is:-

$1s^1$

Helium is the element of group 18 and first period. The atomic number of helium is 2 and the symbol of the element is He.

The electronic configuration of the element helium is:-

$1s^2$

Sodium is the element of group 1 and third period. The atomic number of sodium is 11 and the symbol of the element is Na.

The electronic configuration of the element sodium is:-

$1s^22s^22p^63s^1$

Magnesium is the element of group 2 and third period. The atomic number of magnesium is 12 and the symbol of the element is Mg.

The electronic configuration of the element magnesium is:-

$1s^22s^22p^63s^2$

Potassium is the element of group 1 and forth period. The atomic number of potassium is 19 and the symbol of the element is K.

The electronic configuration of the element potassium is:-

$1s^22s^22p^63s^23p^64s^1$

5 0

3 years ago

What happens if you drink juice instead of water? reddit?

lina2011 [118]

Juice can be sugary so it can add more fat to your body... I don’t know man lol

8 0

3 years ago

Which distinguishes an atom of one element from an atoms of a different element?

dalvyx [7]

Answer:

The number of protons you welcome

Explanation:

7 0

3 years ago

List three factors that can pollute water.

k0ka [10]

Sources of pollution can be natural, but they are often human-related.

Sources of pollution include dirt, bacteria, and fertilizers.

6 0

3 years ago

Read 2 more answers

How many moles are in 63 g of NH4 (molar mass= 18g)?

sdas [7]

To answer this question, all you to do is to divide the mass by the molar mass and that should get you your moles.

$=63g\ NH_{4}\ x\ \frac{1\ mol\ NH_{4}}{18g\ NH_{4}}$

4 0

2 years ago

Read 2 more answers