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lutik1710 [3]
2 years ago
13

Sand at a beach becomes very warm after being exposed to sunlight for many hours due to what type of heat transfer?

Chemistry
2 answers:
erastova [34]2 years ago
7 0

Answer:

C

Explanation:

When lie down on hot sand, the energy flows from the sand to your body by conduction. Conduction is the transfer of heat between two things that touch each other.

andreev551 [17]2 years ago
3 0

Answer:

B

Explanation:

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Hydrochloric acid + aluminum hydroxide ®
makkiz [27]
The answer is C. and D. water and aluminum
3 0
2 years ago
Which metal in Period 5 is very reactive and has two valence electrons in each atom? rubidium (Rb) strontium (Sr) zirconium (Zr)
vladimir1956 [14]
<h3>Answer:</h3>

           Strontium (Sr)

<h3>Explanation:</h3>

                        The condition given in statement is the presence of two valence electron. Hence, first we found the electronic configuration of given atoms as follow;

                       Rubidium                         [Kr] 5s¹

                      Strontium                        [Kr] 5s²

                       Zirconium                         [Kr] 4d² 5s²

                      Silver                                 [Kr] 4d¹⁰ 5s¹

From above configurations it is cleared that only Strontium and Zirconium has two electrons in its valence shell.

We also know that s-block elements are more reactive than transition elements due to less shielding effect in transition elements hence, making it difficult for transition metals to loose electrons as compared to s-block elements. Therefore, we can conclude that Strontium present in s-block with two valence electrons is the correct answer.

4 0
3 years ago
Read 2 more answers
What is the molarity of a solution containing 0.32 moles of NaCI in 3.4 liters
CaHeK987 [17]

Answer:

.094 M

Explanation: 0.32molNaCl/ 3.4L = .094M

3 0
2 years ago
Consider the titration of 30.0 mL of 0.050 M NH3 with 0.025 M HCl.
Alla [95]

Answer:

60.0mL

Explanation:

For the process of titration , the formula we use is -

M₁V₁ = M₂V₂

Where ,

M₁ = initial concentration

V₁ = initial volume

M₂ = final concentration

V₂ = final volume .

Hence , from the question ,

The given data is ,

M₁ = 0.050 M

V₁ = 30.0mL

M₂ = 0.025 M

V₂ = ?

Now, to determine the unknown quantity , the formula can be applied ,

Hence ,

M₁V₁ = M₂V₂

Putting the respective values ,

0.050 M * 30.0mL = 0.025 M * ?

solving the above equation ,

V₂ = ? = 60.0mL

6 0
3 years ago
I'll GIVE BRAINLY
kenny6666 [7]

Answer:

Hey there!

35 s represents time.

The s means "seconds."

Let me know if this helps :)

8 0
3 years ago
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