Describe your accuracy of your density measurements asummunf that you correctly identified your mystery solid and liquid

Answer: The isotope will be represented  by symbol .

Solution:

The isotope of an element is represented by:

X = Symbol of an element

Z = Atomic Number of that element = Total number of electrons or protons

A = atomic mass of that element = Z+ total number of neutrons

So the uranium isotope with atomic mass of 238 and atomic number of 92 will be written as:

Answer:

B. 238/92 U

Explanation:

Correct answer on edge 2022

(a) Reticular Lamina

The layer of the basement membrane of epithelial tissues that is produced and secreted by cells of the underlying connective tissue is (a) Reticular Lamina.

The basement membrane is composed of two layers: the basal lamina, which is produced by the epithelial cells themselves, and the reticular lamina, which is produced and secreted by cells of the underlying connective tissue. These two layers together provide structural support and help anchor the epithelial tissue to the underlying connective tissue.

Answer:

The correct answer will be- by providing different amount of water to experimental groups.

Explanation:

The scientific experimental samples are divided into two groups: the control group in which the variable to be studied is kept constant and the experimental variable to which different amount of studied variable is provided.

In the given question, the scientific question is how much amount of water is required for the optimal growth of the plants. The variable to be studied is water, so different amount of water is provided to different pots like 10 ml, 20 ml, 30 ml and so on.  So the plant which will respond best to this amount will be the optimal concentration of the water required by the plant to grow.

Answer:2.50 moles of magnesium will consume approximately 182.30 grams of hydrochloric acid in the given reaction.

Explanation:To find out how many grams of hydrochloric acid (HCl) are consumed when 2.50 moles of magnesium (Mg) react with it, you can use stoichiometry and the balanced chemical equation:

Mg(s) + 2HCl(aq) -> MgCl2(aq) + H2(g)

From the balanced equation, you can see that 1 mole of magnesium (Mg) reacts with 2 moles of hydrochloric acid (HCl).

Now, let's use this information to calculate the moles of HCl required to react with 2.50 moles of Mg:

Moles of HCl = (2.50 moles Mg) * (2 moles HCl / 1 mole Mg)

Moles of HCl = 2.50 moles * 2

Moles of HCl = 5.00 moles

Now that we know we need 5.00 moles of HCl, we can calculate the grams of HCl needed using the molar mass of HCl:

The molar mass of HCl is the sum of the atomic masses of hydrogen (H) and chlorine (Cl):

Molar mass of HCl = 1.01 g/mol (for hydrogen) + 35.45 g/mol (for chlorine)

Molar mass of HCl = 36.46 g/mol

Now, calculate the grams of HCl:

Grams of HCl = (5.00 moles) * (36.46 g/mol)

Grams of HCl = 182.30 grams

So, 2.50 moles of magnesium will consume approximately 182.30 grams of hydrochloric acid in the given reaction.

Final answer:

The balanced equation for the reaction between nitrogen and hydrogen to form ammonia is N₂(g) + 3H₂(g) --> 2NH3(g). This uses the concept of balanced chemical equations, which ensure the same number of atoms of each element on both sides.

Explanation:

The reactants in the question are hydrogen and nitrogen, and they react to form the product, ammonia. This reaction can be described using a balanced chemical equation, which ensures that the number of atoms of each element are the same on both the reactant and product sides of the equation.

The balanced equation for this reaction is N₂(g) + 3H₂(g) --> 2NH3(g). Here, N₂ represents nitrogen, H₂ represents hydrogen, and NH₃ represents ammonia. The 'g' in brackets indicates that these compounds are in their gaseous states. The numbers in front of the chemical formulas are called stoichiometric coefficients and they indicate the ratio in which the reactants react and the products form. In this case, one nitrogen molecule reacts with three hydrogen molecules to yield two ammonia molecules.

Chemical reactions, including this one, proceed from left to right as shown by the arrow. They show how reactants become products, similar to mathematical equations.

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To see the number of atoms of an element in a given molecule we need to multiply stoichiometry to the number that is written on the foot of the element that is stoichiometry. Therefore, Much of the mass of an atom is concentrated in its nucleus. The nucleus contains  protons and neutrons and the outer part of the atom contains  electrons.

What is atom?

Atom is the smallest particle of any element, molecule or compound. Atom can not be further divided. Atoms contains nucleus in its center and electron that revolve around the atom in fixed orbit. Electron has -1 charge while proton has +1 charge. Neutron is neutral.

Much of the mass of an atom is concentrated in its nucleus. The nucleus contains  protons and neutrons and the outer part of the atom contains  electrons.

Therefore, much of the mass of an atom is concentrated in its nucleus. The nucleus contains  protons and neutrons and the outer part of the atom contains  electrons.

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Answer: 1) The answer is: c) protons and neutrons.

2) The answer is: a) electrons.

Explanation: