What type of reaction is Ca OH 2 Heat? Among widely recognizable exothermic reactions is the combustion of fuels (such as the reaction of methane with oxygen mentioned previously). The formation of slaked lime (calcium hydroxide, Ca(OH)2) when water is added to lime (CaO) is exothermic. How many different elements are involved in the chemical […]
How do you test a hypothesis in an experiment?
How do you test a hypothesis in an experiment? How to Test Hypotheses State the hypotheses. Every hypothesis test requires the analyst to state a null hypothesis and an alternative hypothesis. Formulate an analysis plan. The analysis plan describes how to use sample data to accept or reject the null hypothesis. Analyze sample data. Interpret […]
What is the relation between temperature and pressure?
What is the relation between temperature and pressure? In a closed system where volume is held constant, there is a direct relationship between Pressure and Temperature. In a direct relationship, one variable follows the same change when it comes to increasing and decreasing. For example, when the pressure increases then the temperature also increases. What […]
Why is the voltmeter connected in parallel with a resistor when measuring its voltage?
Why is the voltmeter connected in parallel with a resistor when measuring its voltage? A voltmeter is an instrument that measures the difference in electrical potential between two points in an electric circuit. In order for a voltmeter to measure a device’s voltage, it must be connected in parallel to that device. This is necessary […]
Which is used as the dielectric layer in MOS capacitor?
Which is used as the dielectric layer in MOS capacitor? An MOS capacitor is made of a semiconductor body or substrate, an insulator and a metal electrode called a gate. Practically the metal is a heavily doped n+ poly-silicon layer which behaves as a metal layer. The dielectric material used between the capacitor plates is […]
What are examples of responses?
What are examples of responses? Response: how the organism reacts to a stimulus and results in a change in behavior. (It is a fancy way of saying “effect”.) Example: Getting a drink when you are thirsty. What are the types of responses? Types of Responses Agree/Disagree Response. Interpretive/Reflective Response. Analytic/Evaluative Response. What are the four […]
How long does it take to build a rocket?
What has more water lakes or rivers?
What has more water lakes or rivers? By comparison, freshwater comprises only 3% of the earth’s water, and surface water is only 0.3% of that 3%. Furthermore, rivers and lakes comprise 2% and 87%, respectively, of surface water. Thus, rivers contain only 0.00018% and lakes only 0.0078% of the earth’s water. Who has the most […]
What are some patterns of the moon?
What are some patterns of the moon? An easy way to remember and understand those “between” lunar phase names is by breaking out and defining 4 words: crescent, gibbous, waxing, and waning. The word crescent refers to the phases where the moon is less than half illuminated. The word gibbous refers to phases where the […]
How many electron domains does CO2 have?
How many electron domains does CO2 have? 2 electron domains How do you count electron domains? Count the total number of electron domains. Use the angular arrangement of the chemical bonds between the atoms to determine the molecular geometry. Keep in mind, multiple bonds (i.e., double bonds, triple bonds) count as one electron domain. In […]