Answer:
Approximately 51 grams
Explanation:
First find the molar mass of carbon, which is around 12 grams by looking at a periodic table. Then, multiply 12 by 4 since there are 4 carbons. Next, find the molar mass of hydrogen, which is around 1 gram. Multiply it by 3 since there are 3 hydrogens. Finally add up both of the molar masses to get the total molar mass, which is 51 grams.
12g (4) + 1g (3)= 51 g
Yea this makes me happy I love talking about bonds Here is a explanation since there is no question.
In the ionic bond that creates sodium fluoride, for example, the element sodium loses one of its 11 electrons to balance the 9 electrons in Fluoride because the ionization energy of sodium (the charge required to lose an electron) is low.
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Answer:
Theory
Explanation:
Science is empirical in nature. It massively depends on the gathering of a large body of evidence to support one's idea.
In the scientific method, observations are subjected to rigorous experimentation until a large data of empirical evidences support such idea.
When such idea has been supported by massive empirical evidence, we now call it a theory.
Answer: The time for activity to fell from 800 counts per second to 200 counts per second is 20 minutes
Explanation:
Expression for rate law for first order kinetics is given by:
where,
k = rate constant
t = age of sample
a = let initial amount of the reactant
a - x = amount left after decay process
a) for finding the rate constant:
Half life is the amount of time taken by a radioactive material to decay to half of its original value.
b) for activity to fell from 800 counts per second to 200 counts per second.
The time for activity to fell from 800 counts per second to 200 counts per second is 20 minutes
Virtually all other living creatures depend on plants to survive. Through photosynthesis, plants convert energy from sunlight into food stored as carbohydrates. Because animals cannot get energy directly from the sun, they must eat plants (or other animals that have had a vegetarian meal) to survive. Plants also provide the oxygen humans and animals breathe, because plants use carbon dioxide for photosynthesis and release oxygen into the atmosphere.
Plants are found on land, in oceans, and in fresh water. They have been on Earth for millions of years. Plants were on Earth before animals and currently number about 260,000 species. Three features distinguish plants from animals:
Plants have chlorophyll, a green pigment necessary for photosynthesis;
Their cell walls are made sturdy by a material called cellulose; and
They are fixed in one place (they don’t move).
Plant Classification
In order to study the billions of different organisms living on earth, biologists have sorted and classified them based on their similarities and differences. This system of classification is also called a taxonomy and usually features both English and Latin names for the different divisions.
All plants are included in one so-called kingdom (Kingdom Plantae), which is then broken down into smaller and smaller divisions based on several characteristics, including:
Whether they can circulate fluids (like rainwater) through their bodies or need to absorb them from the moisture that surrounds them;
How they reproduce (e.g., by spores or different kinds of seeds); and
Their size or stature.
The majority of the 260,000 plant species are flowering herbs. To describe all plant species, the following divisions (or phyla) are most commonly used to sort them. The first grouping is made up of plants that are non-vascular; they cannot circulate rainwater through their stems and leaves but must absorb it from the environment that surrounds them. The remaining plant species are all vascular (they have a system for circulating fluids). This larger group is then split into two groups: one that reproduces from spores rather than seeds, and the other that reproduces from seeds.
