<span>As the temperature of a sample of a radioactive element decreases the half-life will remain the same. This is because Half-life depends on time. Factors like temperature, pressure, and volume have no effect.</span>
Answer:
16mL
Explanation:
Using the following formula;
CaVa = CbVb
Where;
Where
Ca = concentration/molarity of acid (M)
Va = volume of acid (mL)
Cb = concentration/molarity of base (M)
Vb = volume of base (mL)
According to the information provided in this question;
Ca (HCl) = 2M
Cb (NaOH) = 5M
Va (HCl) = 40mL
Vb (NaOH) = ?
Using CaVa = CbVb
Vb = CaVa/Cb
Vb = 2 × 40/5
Vb = 80/5
Vb = 16mL
<h3>
Answer:</h3>
15.0 meters
<h3>
Explanation:</h3>
- Kilometers are units used to measure length.
- Length is also measured using other units which include meters, centimeters, decimeter, millimeter, etc
- To convert one unit to another we use conversion factors.
In this case to know inter-conversion between units of measuring length, we consider the following;
Kilometer(km)
10
Hectometer(Hm)
10
Decameter(dam)
10
Meter (M)
10
Decimeter (dm)
10
Centimeter (cm)
10
Millimeter (mm)
Therefore, to convert km to meter we use the conversion factor (10×10×10) 1000 m/km.
Thus;
0.0150 km is equivalent to;
= 0.0150 km × 1000 m/Km
= 15.0 meters
Thus, 0.0150 km is equivalent to 15.0 meters.
