Does boiling point increase across a period? Melting and boiling points increase across the three metals because of the increasing strength of their metallic bonds. The number of electrons which each atom can contribute to the delocalized “sea of electrons” increases. The atoms also get smaller and have more protons as you go from sodium […]
Why is water solubility important to life?
Why is water solubility important to life? Water is called the “universal solvent” because it is capable of dissolving more substances than any other liquid. This is important to every living thing on earth. It means that wherever water goes, either through the air, the ground, or through our bodies, it takes along valuable chemicals, […]
Which is the thinnest and outermost layer of the atmosphere?
Which is the thinnest and outermost layer of the atmosphere? The Earth can be divided into four main layers: the solid crust on the outside, the mantle, the outer core and the inner core. Out of them, the crust is the thinnest layer of the Earth, amounting for less than 1% of our planet’s volume. […]
What is the source of the energy released in fission and fusion reactions?
What is the source of the energy released in fission and fusion reactions? Nuclear Fusion reactions power the Sun and other stars. In a fusion reaction, two light nuclei merge to form a single heavier nucleus. The process releases energy because the total mass of the resulting single nucleus is less than the mass of […]
Do I need to discharge a capacitor?
Do I need to discharge a capacitor? You must discharge the capacitors before working on power supply circuits so you won’t get shocked. There are three different ways to discharge large filter capacitors in a power supply: with a screwdriver, the leads of a socketed 100 watt light bulb, and the leads of a high-wattage […]
What is the center of a hurricane called?
Can light be seen?
Can light be seen? Our eyes detect light that strikes the retina. And what we consciously perceive are the objects, from which the detected light, originates. So we do not see light, we see the (brains representation) objects. LIGHT, LIGHT AND LIGHT. Why is light so important in our daily lives? Light is the main […]
Who is the father of correlation?
Who is the father of correlation? Sir Francis Galton What is the formula of Karl Pearson coefficient of skewness? Step 1: Subtract the mode from the mean: 70.5 – 85 = -14.5. Step 2: Divide by the standard deviation: -14.5 / 19.33 = -0.75. Pearson’s Coefficient of Skewness #2 (Median): Step 1: Subtract the median […]
Is Boron 11 stable or unstable?
Is Boron 11 stable or unstable? Boron 11 Metal (Boron-11) is a stable (non-radioactive) isotope of Boron. It is both naturally occurring and a produced by fission. What is the half life of boron-10? 20.20 milliseconds Why is boron 9 not stable? Returning to our boron example, with only 4 neutrons, boron-9 is unstable, and […]
What is the rarest color for a rose?
What is the rarest color for a rose? Blue Roses What does a pink rose mean? Pink roses symbolize gratitude, grace, and joy. Overall, pink roses suggest a gentleness compared to the typical bright red rose. They are seen as a token of admiration when given to someone. Just like with red roses, pink’s varying […]