What happens when water cools below 4?

What happens when water cools below 4? Right when the water freezes to ice, the ice becomes significantly less dense than the water and continues to float on the lake’s surface. Below 4° Celsius, water becomes less dense as it gets colder, causing water about to freeze to float to the top. What happens when […]

What is the pH of NaCl?

What is the pH of NaCl? ≈7 Does NaCl increase pH? Does NaCl change pH? I said No, because NaCl is a neutral salt and doesn’t affect the pH. Today, I make an experiment and realized that when I prepare 1M NaCl solution in 25mM Sodium Phosphate buffer (pH=7.5), NaCl lowered (change) the pH from […]

Do humans and plants share a common ancestor?

Do humans and plants share a common ancestor? Originally Answered: Do plants and humans have a common ancestor? Yes. The last common ancestor would have been an early eukaryote protist, around 2 billion yeras ago. What is the most intelligent single celled organism? This Single-Celled Animal Makes Complex ‘Decisions’ Even Without a Nervous System. In […]

What are 2 examples of bacteria?

What are 2 examples of bacteria? Examples of Bacteria: Lactobacillus acidophilus found in yogurt. Staphylococcus aureus found on our skin. Escherichia coli found in our gut to aid in digestion. Staphlyococcuspneumoniae which causes pneumonia. Clostridium botulinum which can contaminate canned goods and cause botulism. Related Links: Examples. What are the 3 main types of bacteria […]

What is the thermoelectric power?

What is the thermoelectric power? The conversion of thermal energy into electrical energy. Thermoelectric generation relies on a fuel source (e.g. fossil, nuclear, biomass, geothermal, or solar) to heat a fluid to drive a turbine. What is thermoelectric diagram? Thermo-electric Diagram. A diagram indicating the change in potential difference for a fixed difference of temperature […]

Why the nucleus is very dense?

Why the nucleus is very dense? Electrons have virtually no mass, but protons and neutrons have a lot of mass for their size. As a result, the nucleus has virtually all the mass of an atom. Given its great mass and tiny size, the nucleus is very dense. How do you find an isotope? Isotopes […]

What was the first plane to break sound barrier?

What was the first plane to break sound barrier? Bell X-1 Did Spitfire break sound barrier? A Spitfire very nearly broke the sound barrier in 1944. In the 1930s a small number of aero-engineers recognized that the piston-engine and propeller were providing diminishing returns. For the aircraft to go supersonic the whole propeller would have […]

What if there is two medians?

What if there is two medians? If there is an even number of numbers add the two middles and divide by 2. The result will be the median. How do you get rid of mean? How to Find the Mean. The mean is the average of the numbers. It is easy to calculate: add up […]

What is it called when you study stars?

What is it called when you study stars? What is Astronomy? Astronomy is the study of everything in the universe beyond Earth’s atmosphere. That includes objects we can see with our naked eyes, like the Sun , the Moon , the planets, and the stars . How do scientists study space today? Astronomers study the […]

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