What does H2 plus O2 equal? H2 + O2 = H2O – Chemical Equation Balancer. Why is H2 O2 H2O2 incorrect? 1 Answer. The number of subscripts for each element in a chemical formula is like a form of spelling. Each chemical formula has its own unique set of elements and subscripts. For example, H2O […]
What is the fraction 2/3 equivalent to?
What is the fraction 2/3 equivalent to? Equivalent fraction of a given fraction is got by multiplying or dividing its numerator and denominator by the same whole number. For example, if we multiply the numerator and denominator of 2/3 by 4 we get. 2/3 = 2×4 / 3×4 = 8/12 which is an equivalent fraction […]
What are three space explorations?
What are three space explorations? Examples of such efforts include the development of the Curiosity Mars rover, the Cassini-Huygens mission to Saturn and its moons, and the development of major space-based astronomical observatories such as the Hubble Space Telescope. What was the coolest space mission? Apollo 9 and 10 were again crewed test flights, but […]
Is calcium carbonate a ionic compound?
Is calcium carbonate a ionic compound? Calcium carbonate (CaCO3) has ionic bonding between calcium ion Ca2+ and a polyatomic ion, CO2−3, but within the carbonate ion (CO32-), the carbon and oxygen atoms are connected by covalent bonds (shown above). Why calcium carbonate has both ionic and covalent bond? Calcium carbonate is another example of a […]
Who said that a force is not needed to keep an object moving?
Who said that a force is not needed to keep an object moving? Newton What is natural state of an object? Objects do not change motion without unbalanced force. Objects in motion do not always require a force to keep them moving. Objects have two “natural” states of motion, at rest (static equilibrium) and moving […]
What is air pressure and what causes it?
What is air pressure and what causes it? Air pressure is caused by the weight of the air molecules above. Even tiny air molecules have some weight, and the huge numbers of air molecules that make up the layers of our atmosphere collectively have a great deal of weight, which presses down on whatever is […]
What type of energy does burning food release?
What type of energy does burning food release? This food is oxidized (or “burned”) inside our bodies during digestion. As this happens, chemical energy stored in the food is converted to heat energy (to maintain our constant body temperature), mechanical energy (to move our muscles), and electrical energy (for nerve transmission). What form of energy […]
What are the 4 common concepts in nursing theory?
What are the 4 common concepts in nursing theory? According to the four concepts common in nursing theory; the person (patient), the environment, health & nursing (goals, roles, functions) can be analyzed. Each of these concepts is usually defined and described by a nursing theorist. Of the four concepts, the most important is that of […]
What gas is important to photosynthesis?
What gas is important to photosynthesis? carbon dioxide What are the raw materials and end products of photosynthesis? The raw materials of photosynthesis, water and carbon dioxide, enter the cells of the leaf, and the products of photosynthesis, sugar and oxygen, leave the leaf. What are three end products of photosynthesis? Glucose and oxygen are […]
What color of light has the highest frequency?
What color of light has the highest frequency? Violet waves What is the depression of light? Dispersion of light is caused by the change of speed of light ray (resulting in angle of deviation) of each wavelength by a different amount. Note: White light comprises of seven visible colours (VIBGYOR) whereas black (or dark) signifies […]