Why is Group 15 called nitrogen? The Group 15 elements are generally known as the nitrogen family. All of the elements of this family have five electrons in their outermost energy level. This group is divided into nonmetals, semimetals, and metals by characteristic. Nitrogen is a diatomic gas and phosphorus is a solid. Why is […]
What are some examples of physical and chemical properties?
What are some examples of physical and chemical properties? Physical properties include color, density, hardness, and melting and boiling points. A chemical property describes the ability of a substance to undergo a specific chemical change. What are the physical properties of materials? A material’s physical properties denote the physical state of materials that are exclusive […]
Which one is more stable O or O 2?
Which one is more stable O or O 2? 1 Answer. O2+ is more stable than O2-. Because According to molecular orbital theory O2+ has 15 electrons &it has one electron in antibonding orbital. In the case of O2- 17 electrons are present &3 electrons are present in antibonding orbitals. Why O2 ion is more […]
Which US president served 3 terms?
Which US president served 3 terms? Roosevelt won a third term by defeating Republican nominee Wendell Willkie in the 1940 United States presidential election. He remains the only president to serve for more than two terms. What was the name of Franklin Roosevelt’s foreign policy? The main foreign policy initiative of Roosevelt’s first term was […]
What is an example of a good hypothesis?
What is an example of a good hypothesis? Here’s an example of a hypothesis: If you increase the duration of light, (then) corn plants will grow more each day. The hypothesis establishes two variables, length of light exposure, and the rate of plant growth. An experiment could be designed to test whether the rate of […]
Which salt is more soluble in acidic solution?
Which salt is more soluble in acidic solution? For CuBr adding H+ forms HBr and that is a weak acid; therefore, CuBr is more soluble in acid than in water. Is AgCl more soluble in acid than water? AgCl will be more soluble in acidic solutions because Cl- will react with basic solutions because HCl […]
What is the osmotic pressure of blood?
What is the osmotic pressure of blood? Types of fluids Oncotic pressure values are approximately 290 mOsm per kg of water, which slightly differs from the osmotic pressure of the blood that has values approximating 300 mOsm /L. Which of the following blood pressure readings would be indicative of hypertension? Blood pressure categories Normal: A […]
What happens when oil spills on land?
What happens when oil spills on land? As spilled oil on land prevents water absorption by the soil, spills on agricultural locations or grasslands have the effect of choking off plant life. Berms and trenches can be used to contain the spill, as long as their use does not allow the oil to leach into […]
What are 5 facts about the sun?
How can we increase calcium in our body?
How can we increase calcium in our body? Good sources of calcium include: milk, cheese and other dairy foods. green leafy vegetables, such as broccoli, cabbage and okra, but not spinach. soya beans. tofu. soya drinks with added calcium. nuts. bread and anything made with fortified flour. fish where you eat the bones, such as […]