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tigry1 [53]
3 years ago
14

Science quiz, i think its chem... grade 8

Chemistry
2 answers:
umka2103 [35]3 years ago
7 0

Answer:

reactants

Explanation:

lina2011 [118]3 years ago
6 0

Answer:

Everything to the right of the arrow is a product.

Explanation:

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Naming compounds<br><br>does anyone know the answers for these or at least one of them ?​
Arada [10]

Answer:

KNO3- Potassium Nitrate, KOH- Potassium hydroxide, K2CRO4- Potassium chromate

Explanation:

6 0
3 years ago
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A liter of water has a mass of 1000 g. What is the density of water?
allsm [11]

Answer: D = 1g/ml

Explanation:

6 0
3 years ago
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Which pair of elements would you expect to exhibit the greatest similarity in their physical and chemical properties? Sr, Te Ga,
Anvisha [2.4K]

Answer:

Explanation:

N and P will have similarity

Electronic configuration of N

2,5

1s²2s²p⁵

Electronic configuration of  P

1s²2s²2p⁶3s²3p⁵

Electronic configuration bears similarity.

Both have 5 electrons in their outermost orbits . So they exhibit similarity in their properties. Both belong to the same 15 th group of periodic table.

Sr and Rb too bear much similarity . Both are strongly electro-positive metal , difference in their atomic no being only one.

5 0
3 years ago
You carefully weigh out 16.00 g of CaCO3 powder and add it to 64.80 g of HCl solution. You notice bubbles as a reaction takes pl
bulgar [2K]

Answer: Mass of CO_2  produced in this reaction was 6.56 grams

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

CaCO_3(s)+2HCl(aq)\rightarrow H_2O(l)+CO_2(g)+CaCl_2(aq)

Mass or reactants =  Mass of CaCO_3+ mass of HCl = 16.00 + 64.80 = 80.80 g

Mass of products  = mass of aqueous solution + mass of CO_2 + = 74.24 + x g

Mass or reactants = Mass of products

80.80 g = 74.24 + x g

x = 6.56 g

Thus mass of CO_2  produced in this reaction was 6.56 grams

7 0
4 years ago
In which of the following situations is the greatest amount of work accomplished?
Dahasolnce [82]

<span>work = force x distances </span>

<span>A - moving 2 newton's up 0.6 meter = 1.2 joules
B - moving 4 newton's up 0.6 meter = 2.4 joules
C - moving 6 newton's up 0.3 meter = 1.8 joules
D - moving 9 newton's up 0.3 meter = 2.7 joules
The greatest amount of work is in example D. 
</span>

<span>
 D is your answer. </span>

7 0
3 years ago
Read 2 more answers
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