2 years ago

Calculate the atomic mass of the element

1 answer:

5 0

To calculate the atomic mass of a single atom of an element, add up the mass of protons and neutrons. Example: Find the atomic mass of an isotope of carbon that has 7 neutrons. You can see from the periodic table that carbon has an atomic number of 6, which is its number of protons.

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When potassium carbonate and calcium chromate are mixed, which of the following will pass through a filter?

aliina [53]

Calcium carbonate will be formed which is insoluble in water.

The answer is a) K and CrO4 only.

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2 years ago

An I.V. infusion order is received for Lidocaine 2 g in 250 ml of 0.9% NaCl to be infused at 3 mg/min. What will the flow rate b

Tamiku [17]

Answer:

The flow rate would be 22.5ml/hr

Explanation:

Volumetric flow rate = Mass flow rate ÷ density

Mass flow rate = 3mg/min = 3mg/min × 60min/1hr = 180mg/hr

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2 years ago

A student uses the periodic table to construct a model that uses a simple diagonal arrow to depict decreasing electronegativity.

Galina-37 [17]

Answer:

helium

Explanation:

helium has the highest ionization energy level

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2 years ago

How would you describe an electron

avanturin [10]

Answer:

an electron is part of the 3 things that are in an atom, it has a negative charge

8 0

3 years ago

Diffrence btwn a period and a group

Tpy6a [65]

Rows of elements are called periods. The period number of an element signifies the highest unexcited energy level for an electron in that element.

Columns of elements help define element groups. Elements within a group share several common properties. Groups are elements have the same outer electron arrangement.

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3 years ago