What is the top of the water called? Bodies of water are made up of layers, determined by temperature. The top surface layer is called the epipelagic zone, and is sometimes referred to as the “ocean skin” or “sunlight zone.” This layer interacts with the wind and waves, which mixes the water and distributes the […]
What reaction is Zn HCl?
What reaction is Zn HCl? The reaction between zinc and HCl is given by the symbolic equation Zn + HCl → ZnCl2 + H2. Note that H2 is hydrogen gas. Will Zn react with HCL? The metal zinc readily reacts with hydrochloric acid to produce hydrogen gas (H2) and zinc chloride (ZnCl2). Every chemical reaction […]
What is a side effect BNF?
What is a side effect BNF? Side-effects in the BNF Administration site reactions have been omitted from the BNF (e.g. pain at injection site). The BNF also omits effects that are likely to have little clinical consequence (e.g. transient increase in liver enzymes). Why is Midodrine being taken off the market? Two weeks ago, the […]
How do you know if a nucleus is stable?
How do you know if a nucleus is stable? The principal factor for determining whether a nucleus is stable is the neutron to proton ratio. Elements with (Z<20) are lighter and these elements’ nuclei and have a ratio of 1:1 and prefer to have the same amount of protons and neutrons. Why is iron nucleus […]
Is a 5K in 30 minutes good?
What are 3 environmental factors that affect the rate of photosynthesis?
What are 3 environmental factors that affect the rate of photosynthesis? Three factors can limit the rate of photosynthesis: light intensity, carbon dioxide concentration and temperature. Light intensity. Without enough light, a plant cannot photosynthesise very quickly – even if there is plenty of water and carbon dioxide. Carbon dioxide concentration. Temperature. What are some […]
What is the difference between the two types of observations?
What is the difference between the two types of observations? Observation involves using the senses to gather information about the natural world. There are two types of observations: qualitative and quantitative. Scientists gather information by making both qualitative and quantitative observations. Quantitative observations yield meaningful, numerical results. What are the 3 parts of observation? When […]
When price is set below equilibrium this will lead to?
When price is set below equilibrium this will lead to? A price below equilibrium creates a shortage. Quantity supplied (550) is less than quantity demanded (700). Or, to put it in words, the amount that producers want to sell is less than the amount that consumers want to buy. We call this a situation of […]
What is a resistance?
What is a resistance? Resistance is a measure of the opposition to current flow in an electrical circuit. Resistance is measured in ohms, symbolized by the Greek letter omega (Ω). Ohms are named after Georg Simon Ohm (1784-1854), a German physicist who studied the relationship between voltage, current and resistance. What causes resistance? An electric […]
Can elephants hear ultrasonic sound?
Can elephants hear ultrasonic sound? Elephants can communicate using very low frequency sounds, with pitches below the range of human hearing. These low-frequency sounds, termed “infrasounds,” can travel several kilometers, and provide elephants with a “private” communication channel that plays an important role in elephants’ complex social life. Can elephants hear humans? Hearing. Elephants have […]