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2 years ago

When combining acids and water, water should always be added to the acid. True or False?

Chemistry

1 answer:

scoundrel [369]2 years ago

8 0

Answer:

False

Explanation:

Always add acid to the water, it dilutes the acid the other way around.

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How many grams do 1.5 x 1026 atoms of magnesium weigh?

LUCKY_DIMON [66]

Answer:

0.3

Explanation:

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2 years ago

What are some examples of van der waals forces?

Rudiy27

It's examples are:

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3 years ago

The period 4 alkaline-earth metal has the name_______ . An isotope of this element having 20 neutrons has amass numberof _______

Cerrena [4.2K]

Answer:

The period 4 alkaline-earth metal has the name Calcium. An isotope of this element having 20 neutrons has a mass number of 40.

Explanation:

Looking at the periodic table 4th row for the alkaline-earth metal, we can find Calcium which has an atomic number of 20 (or protons number, or z). The mass number is given by the sum of protons and neutrons. If the number of protons in this case is 20 and the number of neutrons is also 20, the mass number A = 40.

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2 years ago

Does pb(no3)2 + Na3(PO4) = Pb3(PO4)2 + Na(NO3) have a precipitate?

ipn [44]

Answer:

Yes, Pb3(PO4)2.

Explanation:

Hello there!

In this case, according to the given balanced chemical reaction, it is possible to use the attached solubility series, it is possible to see that NaNO3 is soluble for the Na^+ and NO3^- ions intercept but insoluble for the Pb^3+ and PO4^2- when intercepting these two. In such a way, we infer that such reaction forms a precipitate of Pb3(PO4)2, lead (II) phosphate.

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2 years ago

Name a lustrous non- metal ?

kogti [31]

Answer:

it is iodine it seems very right

5 0

2 years ago

Read 2 more answers