# Find the answer using dimentional analysis. A child requires a 5 ml dose of medicine each day. How many days would a gallon of this medicine last?

Conversion factor, 1 gallon = 4546.09 ml

Volume of stock solution = 1 gallon or 4546.09 ml

Dose required by the child = 5 ml/day

The number of days a gallon of this medicine last,

4546.09 ml x 1  day/ 5 ml = 909.218 days

Therefore, 1 gallon would last 909 days.

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In 3.01 can someone help me with 6. What purpose would the thermometers use?
in Science

Thermometers are used for mesuring the temperature for a certain item

Explanation:

Identify solute and solvent in 80 solution of ethyl alcohol with water

The solute is the part of the solution that dissolves in the second component (usually a fluid). Therefore, for the mentioned solution, the solute is ehyl alcohol since it is the one dissolving in water.

As for the solvent, it is the component in which the solute dissolves. In this case, it is water.

The presence of water will ________ the melting temperature of a rock.

What are the only things that can change in a valid experiment? A. Independent variable and Hypothesis
B. Control variable and Range
C. Control variable and Dependent variable
D. Dependent and Independent Variable

The only things that can change in a valid experiment are dependent and independent variables.

Independent variables and independent variables:

when someone is conducting an experiment, the independent variable is what they change, and the dependent variable is what changes comes because of independent variables, like the independent variable as the cause and the dependent variable as the effect.

so when one is changing the independent variable and dependent varible automatically being changed.

Therefore the correct answer is Dependent and Independent Variable (option D)

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D. Dependent and Independent Variable

Explanation:

Since the independent variable is already the variable being changed, that is one of the things that can be changed and fromt the independent variable being changed, that changes the dependent variable.

Why and how are acids and bases important?

Acids and bases are fairly important for the fact that they are very essential to the human body. As well as they balance the Ph levels in our body. You can use acids and bases to nurtralize eachother aswell

Is condensation of ethanol a physical change or a chemical change

Explanation: Condensation is the phase change of a gas to the liquid state. There is no formation of new products so it does not undergoes chemical change. Any phase change is considered a physical change.

Light can travel through outer space from the Sun to the Earth. This shows that

that light is on the electromagnetic spectrum

Explanation:

this is because In physics, the term light sometimes refers to electromagnetic radiation of any wavelength, whether visible or not. In this sense, gamma rays, X-rays, microwaves and radio waves are also light. Like all types of EM radiation, visible light propagates as waves. However, the energy imparted by the waves is absorbed at single locations the way particles are absorbed. The absorbed energy of the EM waves is called a photon, and represents the quanta of light.

light is made of particles, called photons. Except their movement to earth, every photon vibrates in every direction (they vibrate in just one direction if light is polarized).

Explanation:

In addition to decreasing the amount of fat in a dish, salsa can also increase the amount of A. calories and cholesterol.
B. sodium and cholesterol.
C. vitamin C and fiber.
D. calcium and phosphorus.