Is 2h2 O2 2h20 a balanced equation? Yes, the equation is balanced. There are the same number of Hydrogen (H) and Oxygen (O) atoms on both sides of the equation. What is the balanced equation for ammonia and oxygen? NH3+O2–>NO+ H2O. Which element should you balance last? hydrogen How do you read a balanced chemical […]
How far back can carbon dating date?
How far back can carbon dating date? C (the period of time after which half of a given sample will have decayed) is about 5,730 years, the oldest dates that can be reliably measured by this process date to approximately 50,000 years ago, although special preparation methods occasionally make accurate analysis of older samples possible. […]
Is Melting snow a physical change?
Why does tightening a string increase pitch?
Why does tightening a string increase pitch? Tightening the string gives it a higher frequency while loosening it lowers the frequency. This higher frequency of vibration means that the air particles around the string carry a higher frequency sound wave to your ear, which perceives the higher frequency as a higher pitch. What happens if […]
What is electric potential define electric potential and give its unit?
What is electric potential define electric potential and give its unit? It is defined as, An electric potential is the amount of work needed to move a unit positive charge from a reference point to a specific point inside the field without producing any acceleration. Its SI unit is j/c=Volts. What do you mean by […]
How do you simplify and solve equations?
How do you simplify and solve equations? Here are the basic steps to follow to simplify an algebraic expression: remove parentheses by multiplying factors. use exponent rules to remove parentheses in terms with exponents. combine like terms by adding coefficients. combine the constants. How do you simplify algebraic? To simplify any algebraic expression, the following […]
Is See attached a sentence?
Is See attached a sentence? Yes; “Please see attached document” is comprehensible, and people often write it as a stock phrase, without anyone raising an objection. While you should mention when you’ve attached a document to an email, this phrase isn’t the best way to express that. How do you say attached a resume? The […]
Is the mains AC or DC?
Is the mains AC or DC? AC stands for ‘alternating current’ which means the current constantly changes direction. Mains electricity is an AC supply, and the UK mains supply is about 230 volts. It has a frequency of 50Hz (50 hertz), which means it changes direction and back again 50 times a second. What is […]
How do you prove a rhombus is a quadrilateral?
How do you prove a rhombus is a quadrilateral? To prove a quadrilateral is a rhombus, here are three approaches: 1) Show that the shape is a parallelogram with equal length sides; 2) Show that the shape’s diagonals are each others’ perpendicular bisectors; or 3) Show that the shape’s diagonals bisect both pairs of opposite […]
How is sunlight the primary source of energy for your own life?
How is sunlight the primary source of energy for your own life? 3.1 The Sun is the major source of energy for organisms and the ecosystems of which they are a part. Producers such as plants, algae, and cyanobacteria use the energy from sunlight to make organic matter from carbon dioxide and water. This establishes […]