Answer:
The four stages of technological design include identifying a need, designing and implementing a solution, and evaluating the solution.
I don't know what the options are, cause you didn't show them but, hope this helped.
Explanation:
lo que tú as puesto es falso
Answer:
The Sun releases energy by fusing four hydrogen nuclei into one helium nucleus.
Explanation:
nuclear energy
Answer:
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Explanation:
<u>1. Balanced molecular equation</u>
![2HNO_3+Ba(OH)_2\rightarrow Ba(NO_3)_2+2H_2O](https://tex.z-dn.net/?f=2HNO_3%2BBa%28OH%29_2%5Crightarrow%20Ba%28NO_3%29_2%2B2H_2O)
<u>2. Mole ratio</u>
![\dfrac{2molHNO_3}{1molBa(OH)_2}](https://tex.z-dn.net/?f=%5Cdfrac%7B2molHNO_3%7D%7B1molBa%28OH%29_2%7D)
<u>3. Moles of HNO₃</u>
- Number of moles = Molarity × Volume in liters
- n = 0.600M × 0.0100 liter = 0.00600 mol HNO₃
<u>4. Moles Ba(OH)₂</u>
- n = 0.700M × 0.0310 liter = 0.0217 mol
<u>5. Limiting reactant</u>
Actual ratio:
![\dfrac{0.0600molHNO_3}{0.0217molBa(OH)_2}\approx0.28](https://tex.z-dn.net/?f=%5Cdfrac%7B0.0600molHNO_3%7D%7B0.0217molBa%28OH%29_2%7D%5Capprox0.28)
Since the ratio of the moles of HNO₃ available to the moles of Ba(OH)₂ available is less than the theoretical mole ratio, HNO₃ is the limiting reactant.
Thus, 0.006 moles of HNO₃ will react completely with 0.003 moles of Ba(OH)₂ and 0.0217 - 0.003 = 0.0187 moles will be left over.
<u>6. Final molarity of Ba(OH)₂</u>
- Molarity = number of moles / volume in liters
- Molarity = 0.0187 mol / (0.0100 + 0.0031) liter = 0.456M