Hey i really need help can anyone help i did attached it for you and it is since
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Jordan is doing a science fair project on the effect of music on the growth of tomatoes. He has two tomatoe plants,plant A and plant B, that he grows in a window and gives that same amount of water.plant A is exposed to classical music using headphones attached to the soil. Throughout the growth period, Jordan counts the number of tomatoes produced by each plant.What is the control group?What is the independent variable?What is the dependent variable?What should jordan's conclusion be?Jordan need to repeat this experiment, what should he do differently?
How do the nutrients in soil become building materials for a plant to grow?
Making observations is the first step in the scientific method. Why don't scientists stop with the first step when creating an experiment? *14 pointsA. Scientists don't stop with the first step of their experiment because they don't think that just using their observations is a very good place to start to prove their hypothesis.B. Scientists don't stop with the first step of their experiment because they not only want to observe but they want to test their observations to be sure they are correct.C. Scientists don't stop with the first step of their experiment because they want other scientists' opinions because they may not trust their own observations.D. Scientists don't stop with the first step of their experiment because they would rather plan and run experiments than just observe the world around them.
Drug medication are often prescribed on the basis of body mass. The adult dosage of Elixophyllin, a drug used to treat asthma, is 6 mg/kg of body mass. Calculate the dose in milligrams for a 160 lb person.
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Molar mass HCl = 36.46 g/mol
number of moles:
mass of solute / molar mass
1.25 / 36.46 = 0.03428 moles
M = n / V
M = 0.03428 / 0.03
M = 1.14267 mol/L⁻¹
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Answer:
Noble Gases
Explanation:
They all have complete outer shells. They're also on column 18 :)
B) coffee is a weak acid while drain cleaner is a strong acid
C) oven cleaner is a weak acid while battery acid is a strong acid
D) soft drinking water is a weak base while soapy water is a strong base
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According to the pH scale, baking soda is a weak base while bleach is a strong base. Therefore, option (A) is correct.
What are acids and bases?
An acid is any substance that is capable of donating a proton to another substance. A base is a molecule or ion that is capable to accept a hydrogen ion from an acid.
Acidic substances are generally identified by their sour taste. An acid is commonly a molecule that can donate an H⁺ ion and can be energetically favorable after a loss of H⁺ ion. Acids are also known to turn blue litmus paper into the red.
Bases are characterized by a bitter taste and a slippery texture. A base t can dissolve in water is also referred as an alkali. When bases chemically react with acids, they yield salts and water as products. Bases are also known to turn red litmus paper into the blue.
The pH value of the acids lies between 0 to 7 and the pH value of the acids lies between 7 to 14. Baking soda is a weak base that has a pH value of around 8 to 9 and bleach is a strong base that has a pH value of around 13.
Learn more about acids and bases, here:
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Answer:
the answer is a
Explanation: