How do you know if someone is watching you through the mirror? Place the tip of your fingernail against the mirror. Look closely to where you’re touching the mirror. If there is a gap between your fingertip and the and the image of the nail reflecting back to you, it is a genuine mirror. If […]
Why atoms tend to lose and gain electrons?
Why atoms tend to lose and gain electrons? Most atoms do not have eight electrons in their valence electron shell. Atoms that lose electrons acquire a positive charge as a result because they are left with fewer negatively charged electrons to balance the positive charges of the protons in the nucleus. Positively charged ions are […]
Is 2Mg O2 2MgO synthesis reaction?
Is 2Mg O2 2MgO synthesis reaction? Products- Ending materials in a chemical reaction. Synthesis- a reaction that starts with two or more substances to form a single product. 2Mg + O2 –> 2MgO. Decomposition- a reaction that starts with a single reaction and forms two or more products. What is the balanced equation for Pb […]
What does half-life of radiation mean?
What does half-life of radiation mean? Half-life, in radioactivity, the interval of time required for one-half of the atomic nuclei of a radioactive sample to decay (change spontaneously into other nuclear species by emitting particles and energy), or, equivalently, the time interval required for the number of disintegrations per second of a radioactive … What […]
Which is higher MB or GB?
What is the purpose of a scientific law quizlet?
What is the purpose of a scientific law quizlet? describes an observed pattern in nature with no explanation. it is an expectation of what scientists think will happen under the same conditions. You just studied 2 terms! What best defines a scientific law? In general, a scientific law is the description of an observed phenomenon. […]
Are people stronger at pulling or pushing?
Are people stronger at pulling or pushing? The results suggest that for our group of healthy recreationally active subjects, the upper body “pushing” musculature is approximately 1.5–2.7 times stronger than the musculature involved for pulling. Is pushing harder than pulling? Pulling is easier if you are taller than the object. Otherwise pushing would be easier. […]
What kind of charge a glass rod acquires when it is rubbed with a piece of fur?
What kind of charge a glass rod acquires when it is rubbed with a piece of fur? By convention, we call one type of charge “positive”, and the other type “negative.” For example, when glass is rubbed with silk, the glass becomes positively charged and the silk negatively charged. What do you do with rose […]
Is Sickle Cell Anemia a deletion?
Is Sickle Cell Anemia a deletion? Sickle-cell anemia results from an A leads to T transversion in the second nucleotide of codon 6 of the beta-globin gene. We now report an uncommon beta-thalassemia gene that contains a deletion of this nucleotide. How do you know if a mutation is silent? The two amino acids are […]
What is the use of frequency table?
What is the use of frequency table? The frequency table records the number of observations falling in each interval. Frequency tables are useful for analyzing categorical data and for screening data for data entry errors. Note that we will refer to two types of categorical variables: Categorical and Grouping or Break. How do you estimate […]