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3 years ago

PLEASE HELP ME ITS DUE TODAY!!!

Chemistry

2 answers:

katovenus [111]3 years ago

7 0

D. African plate I gave you true answer

vova2212 [387]3 years ago

5 0

D. The African Plate

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mixas84 [53]

The answer to your questions are
Question 1 - D - stationary
Question 2 - C - I'm not 100% sure
Question 3 - A - the northern subtropical jet stream
Question 4 - A - cold

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4 years ago

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2.00 L of 0.800 M NaNO3 must be prepared from a solution known to be 2.50 M in concentration.How many mL are required? Plus don'

Morgarella [4.7K]

Answer:

1.36 × 10³ mL of water.

Explanation:

We can utilize the dilution equation. Recall that:

$\displaystyle M_1V_1= M_2V_2$

Where M represents molarity and V represents volume.

Let the initial concentration and unknown volume be M₁ and V₁, respectively. Let the final concentration and required volume be M₂ and V₂, respectively. Solve for V₁:

$\displaystyle \begin{aligned} (2.50\text{ M})V_1 &= (0.800\text{ M})(2.00\text{ L}) \\ \\ V_1 & = 0.640\text{ L} \end{aligned}$

Therefore, we can begin with 0.640 L of the 2.50 M solution and add enough distilled water to dilute the solution to 2.00 L. The required amount of water is thus:
$\displaystyle 2.00\text{ L} - 0.640\text{ L} = 1.36\text{ L}$

Convert this value to mL:
$\displaystyle 1.36\text{ L} \cdot \frac{1000\text{ mL}}{1\text{ L}} = 1.36\times 10^3\text{ mL}$

Therefore, about 1.36 × 10³ mL of water need to be added to the 2.50 M solution.

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2 years ago

How does the atomic radius of an element is related to its metallic character

Aneli [31]

Answer:

The large the atomic radius the more the metallic character of elements

Explanation:

The atomic radius is related to the metallic character in a way that the larger the atomic radius, the more metallic a body becomes.

Therefore, as we go down a group, metallic character increases.

Metallic character relies on the ability and willingness of an atom to share its valence electrons.
As the size of an atom becomes large, the more metallic it is and the more its metallic character.
In some other cases this character is known as electropositivity.

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3 years ago

Which function allows a user to add another item to a list in Python? order() print() sort() append()

vovikov84 [41]

Answer:

Probably (print)

Explanation:

I think

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4 years ago

PLEASE HURRY!!!

levacccp [35]

She would have traveled 621.5 kilometers.

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