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3 years ago

13

What is the shape of the waterline?

1 answer:

Vikentia [17]3 years ago

5 0

The waterline is where the hull of a ship meets the surface of the water, it is also a special marking indicating the legal load limit of a ship, and, in naval architectural plans, it is any line drawn to delineate hull shape that is in a plane parallel to the surface of the water.

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Which answer choice correctly describes what will happen to an element with four valence electrons if it engages in a chemical r

Andru [333]

The answer is D. It may gain or lose electrons.

6 0

3 years ago

What is the pH of 0.0850 M HNO3?

agasfer [191]

A pH of exactly 1. I’m not lying... look it up.

8 0

3 years ago

Molecules that form when electrons are shared unequally between atoms are called

gregori [183]

<span>Molecules that form when electrons are shared unequally between atoms are called </span>covalent bond.

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3 years ago

The solid rocket boosters for the space shuttle employ a mixture of aluminum and ammonium perchlorate (molar mass = 117 g/mol) a

Mnenie [13.5K]

Answer : The volume of gas at STP produced are 45.0 L

Explanation :

First we have to calculate the moles of ammonium perchlorate.

$\text{Moles of }NH_4ClO_4=\frac{\text{Mass of }NH_4ClO_4}{\text{Molar mass of }NH_4ClO_4}$

Molar mass of $NH_4ClO_4$ = 117 g/mole

$\text{Moles of }NH_4ClO_4=\frac{235g}{117g/mole}=2.01mole$

Now we have to calculate the moles of $NO$ gas produced during the reaction.

The balanced chemical reaction is,

$3Al(s)+3NH_4ClO_4(s)\rightarrow Al_2O_3(s)+AlCl_3(s)+3NO(g)+6H_2O(g)$

From the reaction we conclude that,

As, 3 moles of $NH_4ClO_4$ produces 3 moles of NO gas

So, 2.01 moles of $NH_4ClO_4$ produces 2.01 moles of NO gas

Now we have to calculate the volume of gas at STP.

At STP, 1 mole of substance occupy 22.4 L volume of gas.

As, 1 mole of NO gas occupy 22.4 L volume of gas.

So, 2.01 mole of NO gas occupy 2.01 × 22.4 L = 45.0 L volume of gas.

Therefore, the volume of gas at STP produced are 45.0 L

6 0

4 years ago

What indicates a chemical change?

enot [183]

Answer:

O D.A change from one substance to aonther

Explanation:

the formeashon on iron is a chemical change

4 0

3 years ago

Read 2 more answers