3 years ago

Which of these pure substances do you think are Elements?

Chemistry

1 answer:

Paladinen [302]3 years ago

6 0

Au Fe O

The others are compounds

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a household’s voltage is 120 volts, what is the power rating of a light bulb with 0.5 amps of current flowing through it?

xenn [34]

Your answer should be 110 volts

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3 years ago

How many centimeters are in .479 kilometers

trapecia [35]

Answer:

47900 cm

General Formulas and Concepts:

Chemistry

Base 10 Decimal System
Using Dimensional Analysis

Explanation:

Step 1: Define

0.479 km

Step 2: Identify Conversions

1 km = 1000 m

1 m = 100 cm

Step 3: Convert

$0.479 \ km(\frac{1000 \ m}{1 \ km} )(\frac{100 \ cm}{1 \ m} )$ = 47900. cm

Step 4: Check

We are given 3 sig figs. Follow sig fig rules.

47900. cm ≈ 47900 cm

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3 years ago

A solution of potassium nitrate is made when potassium nitrate dissolves in water.

kondor19780726 [428]

Answer:

Boil the water and stir in potassium nitrate. If it doesn't all dissolve, you can cook it on the stove or microwave it until the water boils again. Remove the solution from heat, but let it cool slowly for the best crystal formation.

3 0

1 year ago

Which of these compounds would you expect

Veseljchak [2.6K]

ClBr, two nonmetals

Hope this helps you

6 0

2 years ago

Water has a density of 1g/ml. what is the mass of the water if it fills a 10ml container?

notka56 [123]

It's 10.
Mass = density x volume
M = 1g/ml(10ml) = 10g

8 0

3 years ago

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