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Cloud [144]
2 years ago
9

Help I need to finish my chemistry report.

Chemistry
1 answer:
Alexeev081 [22]2 years ago
4 0
The thing that they have in common is that they are all non metals
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You bought a new car and estimated that your monthly payment would be $312. However, your actual payment amount was $325. How mu
Romashka-Z-Leto [24]

Answer:

The error would be $13.

Explanation:

Given data:

Actual payment = $325

estimated payment = $312

Error = ?

Solution:

Error =  Estimated payment - Actual payment

Error = $312  -  $325

Error = -$13

we can discard the negative sign and consider the absolute value. The error would be $13.

5 0
3 years ago
PLEASE HELP OR EXPLAIN!!
Naddik [55]
The third one beacuse if you count all the atoms of every one you will find that one the left side, you have 3 h and on the right you have 2 h
7 0
3 years ago
A beaker contains 500 ml of 2.40M KNO3 the beaker is left uncovered so that all of the water evaporates. What mass of KNO3 cryst
telo118 [61]

Answer:

242.4 g

Explanation:

RAM of KNO3=39+14+(16×3)=101

Mass=morality×RAM

101*2.4=242.4

6 0
3 years ago
How much heat is required to decompose 25.5 grams of NaHCO3? 2NaHCO3(s) + 129 kJ 2Na2CO3(s) + H2O(
Vaselesa [24]
To determine the heat required in order to decompose a certain amount of a substance, we need information on the heat needed to decompose one mole of the substance. This value are readily available online and other sources. For this reaction, the heat needed is 129 kJ per 2 mol of NaHCO3. We calculate as follows:

129 KJ / 2 mol NaHCO3 (1 mol / 84.01 g ) (25.5 g NaHCO3 ) = 19.58 kJ of heat is needed.
4 0
3 years ago
How many valence electrons does an atom of al possess?
Irina18 [472]

Answer:

3

Explanation:

Third element to right

3 0
3 years ago
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