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2 years ago

13

Prepare a list of objects around you that are electroplated

1 answer:

DedPeter [7]2 years ago

8 0

Answer:

Hello! Some household items that are electroplated include kitchenware, such as metal pots and pans, door handles, mobile phones, and coins. An electroplated object is coated by electrolytic deposition with chromium, silver, or another metal.

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Seawater is typically 3.5% salt and has a density of 1.03 g/mL. How many grams of salt would be needed to prepare enough seawate

Bas_tet [7]

Answer:

Amount of salt needed is around 2.3*10³ g

Explanation:

The salt content in sea water = 3.5 %

This implies that there is 3.5 g salt in 100 g sea water

Density of seawater = 1.03 g/ml

Volume of seawater = volume of tank = 62.5 L = 62500 ml

Therefore, the amount of seawater required is:

$=Density*Volume = 1.03g/ml*62500ml = 6.44*10^{4} g$

The amount of salt needed for the calculated amount of seawater is:

$=\frac{6.44*10^{4}g\ water*3.5g\ salt }{100g\ water} =2254 g =2.3*10^{3} g$

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3 years ago

Changing the number of protons in an atom makes<br><br> A. an ion<br> B. an isotope

lana [24]

A. an ion

The atom gains a net electrical charge if the number of protons and electrons are not equal which makes it an ion.

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3 years ago

How can you force a solid compound to the bottom of a melting point capillary? a. tap the closed endb. tap the open endc. use a

snow_lady [41]

Answer: option A. tap the closed end

Explanation:

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3 years ago

A supercell thunderstorm may have a distinctive shape like _____.

liq [111]

D. Pinwheel probably because think it’s a thunderstorm and supercells mean they are super big thunderstorms so I guess D

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3 years ago

What is the formula for hydrogen iodide trihydrate

Natali [406]

HI.3H2O. This is the answer

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3 years ago