All categories

3 years ago

I NEED HELP WITH THIS CHEMISTRY QUESTION PLS

Chemistry

1 answer:

Tatiana [17]3 years ago

5 0

Answer:

Iron, according to:

$2Al(s)+3Fe(NO_3)_2(aq)\rightarrow 3Fe(s)+2Al(NO_3)_3(aq)$

Explanation:

Hi there!

In this case, according to the law of conservation of mass, which states that matter cannot be neither created nor destroyed, it is possible for us to figure out the missing element in the reaction by taking into account this is a single displacement reaction in which Al goes with NO3 to produce the Al(NO3)3, and therefore the other element would be iron (Fe) as can be seen on the following chemical reaction:

$2Al(s)+3Fe(NO_3)_2(aq)\rightarrow 3Fe(s)+2Al(NO_3)_3(aq)$

Best regards!

You might be interested in

Mechanical advantage = load/_______

arlik [135]

Answer:

Mechanical advantage = load/effort

Explanation:

Mechanical advantage is like a ratio of load to effort and many machines like pulleys depend on this relationship between load and effort for it to work.

8 0

3 years ago

Read 2 more answers

Which term represents the movement of molecules from an area of lower concentration to one of higher concentration with carrier

poizon [28]

Answer:

Active transport

Explanation:

Active transport is defined as the movement of ions or molecules from a region of lower concentration into a region of higher concentration by the use of energy. Two examples of active transport include the uptake of glucose in human intestine and the absorption of mineral ions into plant roots.

Active transport requires energy because it involves the movement of molecules against an existing concentration gradient.

4 0

3 years ago

You notice that the water in your friend's swimming pool is cloudy and that the pool walls are discolored at the water line. A q

kicyunya [14]

Answer:

3,78 mL of 12,0wt% H₂SO₄

Explanation:

The equilibrium in water is:

H₂O (l) ⇄ H⁺ (aq) + OH⁻ (aq)

The initial concentration of [H⁺] is 10⁻⁸ M and final desired concentration is [H⁺] = $10^{-7,2}$

Thus, you need to add:

[H⁺] = $10^{-7,2} - 10^{-8}$ = 5,31x10⁻⁸ M

The total volume of the pool is:

7,00 m × 18,0 m ×1,50 m = 189 m³ ≡ 189000 L

Thus, moles of H⁺ you need to add are:

5,31x10⁻⁸ M × 189000 L = 1,00x10⁻² moles of H⁺

These moles comes from

H₂SO₄ → 2H⁺ +SO₄²⁻

Thus:

1,00x10⁻² moles of H⁺ × $\frac{1 H_{2}SO_{4} moles}{2H^+ mole}$ = 5,00x10⁻³ moles of H₂SO₄

These moles comes from:

5,00x10⁻³ moles of H₂SO₄ × $\frac{98,1g}{1mol}$ × $\frac{100 gsolution}{12 g H_{2}SO_{4} }$ × $\frac{1mL}{1,080 g}$ = 3,78 mL of 12,0wt% H₂SO₄

I hope it helps!

5 0

3 years ago

How can your knowledge of acids and bases

fenix001 [56]

Answer:

How can we make use of acids or bases to remove heavy metals from soils? We can remove heavy metals from soil by adding acid and catching the solution that drains through. Acids can react with metals turning metalic compounds which can be dissolved by water and washed away. Improve crop yields?

Explanation:

7 0

3 years ago

What constitutes a solar system?

ziro4ka [17]

The Solar System may be divided by its components into three major regions: the inner system, the near outer system, and the far outer system. The near outer system might also be referred to as the middle system.

Our solar system consists of our star, the Sun, and everything bound to it by gravity — the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune, dwarf planets such as Pluto, dozens of moons and millions of asteroids, comets and meteoroids.
Goodluck my friend!!

3 0

3 years ago