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meriva
3 years ago
9

How is liming a lake similar to a doctor prescribing medicine for a patient?

Chemistry
1 answer:
Jlenok [28]3 years ago
3 0
An anti-acid medication
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Is steel ionic, covalent or metallic
12345 [234]

Answer:

Steel is bonded together by a metallic bond.

Explanation:

There is attractions in the bond, Steel has negative electrons and positive ions, which attract each other. They hold the structure together thus forming a metallic bond.

4 0
3 years ago
Which of the following best describes the motion of the particles in a piece of steel?
sergejj [24]
<span>Steel is a solid at standard temperature and pressure conditions. For a solid, the particles are found to be oscillating about a fixed point. However, steel is a metal so this holds true for the positively charged nuclei of the particles. Just like any other metal, the electrons are free to move about, allowing steel to exhibit its properties such as heat conduction and electricity conduction. The reason the positive particles are fixed in place is because the intermolecular forces are very strong in solids, the strongest out solids, liquids and gases.</span>
6 0
3 years ago
Lysosomes break down old and worn-out cell parts.
Veseljchak [2.6K]

Explanation:

it's true that Lysosomes break down old and worn out cell parts....

3 0
3 years ago
................ is the organic molecule that is the main energy source for cell processes and is made with the energy released
hoa [83]

Answer:

ATP

Explanation:

it is made by breaking glucose down

5 0
3 years ago
Read 2 more answers
Please help, and if you could also give me a step by step that would be awesome!!
const2013 [10]

Answer:

4.4 g

Explanation:

Step 1: Write the balanced equation

Cu + 4 HNO₃ ⇒ Cu(NO₃)₂ + 2 NO₂ + 2 H₂O

Step 2: Calculate the moles corresponding to 3.2 L of NO₂ at STP

At standard temperature and pressure, 1 mole of NO₂ occupies 22.4 L.

3.2 L × 1 mol/22.4 L = 0.14 mol

Step 3: Calculate the moles of Cu needed to produce 0.14 moles of NO₂

The molar ratio of Cu to NO₂ is 1:2. The moles of Cu needed are 1/2 × 0.14 mol = 0.070 mol.

Step 4: Calculate the mass corresponding to 0.070 moles of Cu

The molar mass of Cu is 63.55 g/mol.

0.070 mol × 63.55 g/mol = 4.4 g

5 0
3 years ago
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