The reactants are on the left side of the reaction: Zn and CuSO4
Answer:
146 mL
Explanation:
Step 1: Write the balanced equation
H₃PO₄ + 3 NaOH ⇒ Na₃PO₄ + 3 H₂O
Step 2: Calculate the reacting moles of sodium hydroxide
119 mL of 0.315 M NaOH react.
Step 3: Calculate the reacting moles of phosphoric acid
The molar ratio of H₃PO₄ to NaOH is 1:3. The reacting moles of H₃PO₄ are 1/3 × 0.0375 mol = 0.0125 mol.
Step 4: Calculate the reacting volume of phosphoric acid
0.0125 moles of H₃PO₄ are in a 0.0855 M solution.
Technetium, with atomic number (denoted Z) 43, is the lowest-numbered element in the periodic table of which all isotopes are radioactive. The second-lightest exclusively radioactive element, promethium, has an atomic number of 61.
Answer:
If you mean "<em>What is a hypothesis and the scientific law</em>?" than hypothesis <u>means a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation</u> and scientific laws or laws of science, <u>are statements, based on repeated experiments or observations, that describe or predict a range of natural phenomena. The term law has diverse usage in many cases across all fields of natural science.</u>
Answer:
If you mean "<em>What do hypothesis and scientific law have in common</em>" than <u>a hypothesis is a </u><u>limited explanation of a phenomenon</u><u>; a scientific theory is </u><u>an in-depth explanation of the observed phenomenon</u><u>. A law is a statement about an observed phenomenon or a unifying concept.</u>
Answer:
There are two types of mixtures: heterogeneous and homogeneous. Heterogeneous mixtures have visually distinguishable components, while homogeneous mixtures appear uniform throughout. The most common type of homogenous mixture is a solution, which can be a solid, liquid, or gas.
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