Answer:
9.3 x 10^ -5 in standard notation is 0.000093
Explanation:
Since 10 is raised to a -5, this means that there should be 5 zeros before the non-zero digits
Answer:
Measure the volume of water poured into a graduated cylinder, then place the object in the water and remeasure the volume. The difference between the two volume measurements is the volume of the object. Now simply divide the mass by the volume to calculate the density of the object.
Answer:
HFusion*mass + Spec.Heat*mass*ΔT + HVap*mass
80cal/g*50.0g + 1.00cal/g°C*50.0g*(100°C-0°C) + 540cal/g*50g
3.60x10⁵cal
Explanation:
Using the HFusion we can find the heat needed to convert the ice to liquid water.
With specific heat capacity we can find the heat needed to increase the temperature of water from 0 to 100°C.
With HVap we can find the heat to convert the liquid water into steam.
The equations are:
<h3>HFusion*mass + Spec.Heat*mass*ΔT + HVap*mass</h3><h3 />
Computing the values:
<h3>80cal/g*50.0g + 1.00cal/g°C*50.0g*(100°C-0°C) + 540cal/g*50g</h3>
36000cal =
<h3>3.60x10⁵cal</h3>
Answer:
0.501 M
Explanation:
First we <u>convert 1.513 g of KHP into moles</u>, using its <em>molar mass</em>:
- 1.513 g ÷ 204.22 g/mol = 7.41x10⁻³ mol = 7.41 mmol
As <em>1 mol of KHP reacts with 1 mol of NaOH</em>, in 14.8 mL of the NaOH solution there were 7.41 mmoles of NaOH.
With the above information in mind we can <u>calculate the molarity of the NaOH solution</u>:
- 7.41 mmol / 14.8 mL = 0.501 M
Answer:
Unbalanced
Explanation:
The reactants side says 2Na. This means there should also be 2Na on the product's side. However, there is only 1 Na there. Therefore, the chemical equations are unbalanced.
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