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.
<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>
Explanation:
it's true that Lysosomes break down old and worn out cell parts....
Answer:
ATP
Explanation:
it is made by breaking glucose down
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
