What is the concentration of a solution, in parts per million, if 0.02 gram of Na3PO4 is dissolved in 1000 grams of water?(1) 20 ppm (3) 0.2 ppm
(2) 2 ppm (4) 0.02 ppm

Answers

Answer 1

Answer: ppm = mass of solute in mg / mass of solvent in kg

0.02 x 1000 = 20 mg (solute )

1000 / 1000 = 1.0 kg

ppm = 20 / 1.0

= 20 ppm

Answer (1)

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20 g of sugar is stirred into a beaker containing 100 g of water. After the sugar has completely dissolved, the solution is put on a scale. What is the mass of the solution?

Answers

The mass of the solution of sugar and water is 120 grams.

What is mass?

Mass is the quantity of matter of a physical body.

The mass of the sugar is given is 20g

The mass of the water is 100 g.

100 + 20 = 120 gram

Thus, the mass of the solution of sugar and water is 120 grams.

Learn more about mass

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The mass of the solution should be 120g since 20g of sugar were added to 100g and 100+20=120.
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What type of claim must be supported by scientifically valid evidence for it to be approved for use on a food label? A. Health claim B. Nutrient content claim C. Structure/function claim D. EER

Answers

Option A. Health claim

Health claim must be supported by scientifically valid evidence to be approved in using for food label.

This is also a food guide to all consumers the food content implied by manufacturers to their products.

Answer is Health Claim

Entropy measures _____.a. disorder
b. energy
c. heat transferred
d. force

Answers

a. disorder

Good luck!

If a molecule has four hybrid sp3 orbitals, it can be concluded that the molecule has a

Answers

Tetraedral shape. Like CH4.

5. What causes a moving object to change direction?A. Acceleration
B. Velocity
C. Inertia
D. Force

Answers

Forces cause all motions. Everytime the motion of an object changes, it's because a force has been applied to it. Force can cause a stationary object to start moving or a moving object to change its speed or direction or both. A change in the speed or direction of an object is called acceleration. Here is the answer and explanation

Answer:

D. Force

Explanation:

Applied force can cause change in direction

A force applied at an angle to the direction of motion of an object can cause it to change direction. It is possible that the object keeps going at the same speed, if the force is applied perpendicular to the direction of motion. But the velocity of the the object changes.

A 1. 00 L volume of HCl reacted completely with 2. 00 L of 1. 50 M Ca(OH)2 according to the balanced chemical equation below. 2HCl Ca(OH)2 Right arrow. CaCl2 2H2O What was the molarity of the HCl solution? 0. 375 M 1. 50 M 3. 00 M 6. 00 M.

Answers

Answer:

The first step is to find the number of moles of OH⁻ that reacted with the HCl. To do this multiply 2.00L by 1.50M to get 3 moles of Ca(OH)₂. Then you multiply 3 by 2 (there are 2 moles of OH⁻ per every 1 mole of Ca(OH)₂) to get 6 moles of OH⁻. That means that you needed 6 moles of HCl since 1 mole of HCl contains 1 mole of H⁺ and equal amounts H⁺ and OH⁻ reacted with each other. To find the molarity of the HCl solution you need to divide 6mol by 1L to get 6M. Tat means that the concentration of the acid was 6M.

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Explanation:

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Why am i not good enough :,(

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