Can someone help me?

Chemistry

1 answer:

Natalka [10]3 years ago

8 0

Answer 19.9g. I’ve took the test last week at my uncle randy’s house

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What is the frequency of a radio wave with a a wavelength of 3 m? (Hint: MHz

Ostrovityanka [42]

Answer:
a. 1 x 10^8

Explanation:

100 MHz = 100,000,000 Hz = 10^8 Hz

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2 years ago

Group 1 includes the alkali metals. what are the general properties of elements in this group

pshichka [43]

The general properties of Group 1 alkali metals are:
1. They form cations.
2. They are highly reactive.
3. They have a charge of +1.
4. They form ionic compounds.
5. When their oxides or hydroxides are reacted in water, they form alkalis i.e. bases.
6. They are usually soft in nature.
7. They have low densities.

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3 years ago

4. When is distillation used?

Arlecino [84]

Answer:

Uses of Distillation

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3 years ago

Balance the equation below. _NH4OH + __H3PO4 =>_(NH4)3PO4 + _H2O<br>

larisa [96]

Answer:

Double Displacement (Metathesis)

Explanation:a chemical reaction between two compounds in which parts of each are interchanged to form two new compounds (AB+CD=AD+CB)

8 0

3 years ago

34 grams of chlorine gas react with sodium to form how many grams of sodium chloride? 2 na + cl2 --> 2 nacl

mr Goodwill [35]

Hello!

The balanced chemical equation for the reaction between sodium and chlorine is the following:

2Na + Cl₂ → 2NaCl

To know the mass of Sodium Chloride produced, we are going to use the following conversion factor to go from grams of Chlorine gas to grams of Sodium Chloride:

$34gCl_2* \frac{1 mol Cl_2}{70,9060 g Cl_2} * \frac{2 moles NaCl}{1 mol Cl_2}* \frac{58,4 g NaCl}{1 mol NaCl}=56,007 g NaCl$

So, 56,007 g of NaCl are produced

Have a nice day!

5 0

3 years ago