Answer:
The light wave could be absorbed by the object, in which case its energy is converted to heat.
Explanation:
Group 1 contains metals while group 18 contains noble gases.
So group 1 is different from group 18 as they both contains different types of atoms as group 1 contains metals while group 18 contains noble gases.
There is 1 valence shell electron in group 1 , they are highly reactive while valence shell of group 18 is fully filled and they are least reactive .
The answer would be 1800. Why? bc if you're going 30 meters per second and trying to figure out how far you would go in a minute, you would multiply 30 x 60 bc there's 60 seconds in a minute. Giving you 1800 meters. hope this helped, have an amazing day :)
Answer:
99.24%.
Explanation:
- NaCl reacted with AgNO₃ as in the balanced equation:
<em>NaCl + AgNO₃ → AgCl(↓) + NaNO₃,</em>
1.0 mol of NaCl reacts with 1.0 mol of AgNO₃ to produce 1.0 mol of AgCl and 1.0 mol of NaNO₃.
- We need to calculate the no. of moles of AgCl produced:
no. of moles of AgCl = mass/molar mass = (2.044 g)/(143.32 g/mol) = 0.0143 mol.
- Now, we can calculate the no. of moles of NaCl that can precipitated as AgCl (0.0143 mol), these moles represents the no. of moles of pure NaCl in the sample:
<em>using cross multiplication:</em>
1.0 mol of NaCl produce → 1.0 mol of AgCl, from the stichiometry.
∴ 0.0143 mol of NaCl produce → 0.0143 mol of AgCl.
- Now, we can get the mass of puree NaCl in the sample:
mass of pure NaCl = (no. of moles of pure NaCl)(molar mass of NaCl) = (0.0143 mol)(58.44 g/mol) = 0.8357 g.
∴ The percentage of NaCl in the impure sample = [(mass of pure NaCl)/(mass of the impure sample)] x 100 = [(0.8357 g)/(0.8421 g)] x 100 = 99.24%.
6CO2 + 7H2O = C6H12O6 + 6O2 + H2O
Explanation:
CO2 + H2O = C6H12O6 + O2 + H2O
Starting carbon atoms,
1C on reactants and 6C on products,
therefore you should start by putting a 6 on CO2
6CO2 + H2O = C6H12O6 + O2 + H2O
Proceed with Hydrogen,
Reactants → 2H
Products → 14H
You should multiply H2O with 7 .
6CO2 + 7H2O = C6H12O6 + O2 + H2O
the we need to proceed for Oxygen,
Reactants → 12 + 7= 19O
Products → 6 O in C6H12O6, 2O in O2 and 1O in H2O
we need to balance the equation without disrupting the balance of other atoms, so we need to Multiply O2 with 6
The required balanced equation is
6CO2 + 7H2O = C6H12O6 + 6O2 + H2O