Answer:
0.000237mL
Explanation:
0.237 x 10^-6L = 0.000000237L = mL
0.000237mL
Answer:
a. nitrogen is the correct answer.
Explanation:
- Nitrogen is a macronutrient because nitrogen present in the plant in large quantities.
- Macronutrients are the nutrients which are needed in large amount for the proper growth and development,as they are required in large amounts they are called macronutrients.
- Macronutrients are the most essential elements for plants and required so that body functions properly.
- Macronutrients comprise carbon, nitrogen, sulfur, oxygen, potassium, hydrogen, calcium, phosphorus and magnesium.
Answer:
19.6 g is the mass of methanol
Explanation:
Density of methanol is 0.787 g/mL.
Density means mass / volume
Methanol density = Methanol mass / Methanol volume.
Let's replace in the formula
0.787 g/mL = Methanol mass / 25 mL
0.787 g/mL . 25 mL = Methanol mass → 19.6 g
The heat required to heat 9.61g of ethanol from 24.1 c to 67.3 c is calculate as below
Q(heat) = M(mass) xC (specific heat capacity ) x delta T (bhange in temperature)
Q=?
M=9.61 g
C= 2.46 j/g/c
deltaT =67.3c - 24.1 = 43.2 c
Q is therefore= 9.61 g x 2.46 j/g/c x 43.2 c = 1021.27 joules
Answer:
The atomic radius of atoms generally decreases from left to right across a period. There are some small exceptions, such as the oxygen radius being slightly greater than the nitrogen radius. Within a period, protons are added to the nucleus as electrons are being added to the same principal energy level.
hope this helps!