3 years ago

“The chemical formula in the structure of phosphorus is shown below. This represents a(n)....”

Chemistry

1 answer:

den301095 [7]3 years ago

5 0

Answer:

element made up of four (4) similar atoms.

Explanation:

An element is made up of one kind of atom. A compound is made up of 2 or more different kinds of atoms that are chemically together.

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Scientific models can be used for a variety of different purposes. Which of the following statements about scientific models is

Hitman42 [59]

C is my answer to you

hope this helped

6 0

3 years ago

A supersonic jet is flying west at one-third of its maximum speed. The jet's top speed is 4,500 kilometres per hour. If the jet'

lana [24]

Answer:

2hrs

Explanation:

Given parameters:

Top speed of the jet = 4500km/hr

Distance = 3000km

Unknown:

Time it will take = ?

Solution:

Velocity is the displacement divided by time.

Velocity = $\frac{displacement}{time}$

Time = $\frac{displacement}{velocity }$

The jet flies at one - third its maximum speed;

So, speed of the jet = $\frac{1}{3}$ x 4500 = 1500km/hr

Time = $\frac{3000}{1500}$ = 2hrs

7 0

3 years ago

Find the pH of a 0.0015 M HCl solution

kolbaska11 [484]

Answer:

I got 1.82

Explanation:

Explanation: pH is given by the equation,. pH=−log[H+]. [H+] is the hydrogen ion concentration in terms of morality.

4 0

3 years ago

[H+] = 2.5 x 10-10 M<br> What’s the pH

Reika [66]

Answer:

9.6

Explanation:

$pH = - log[2.5*10^{-10}]= 9.6$

6 0

3 years ago

The atomic number of an element is 71. is this element diamagnetic or paramagnetic?

Mrrafil [7]

The element with atomic number 71(lutetium) is paramagnetic

This is because all its electrons is not paired . lutetium has electron configuration of (Xe) 4f^14 5d^1 6S^2
Its 5d sub shell is not paired since the d sub shell can accommodate a total of 10 electrons hence lutetium is paramagnetic

5 0

3 years ago

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