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Artemon [7]
3 years ago
10

How can scientists control the flammability of a substance?

Chemistry
1 answer:
mamaluj [8]3 years ago
8 0

Answer: This is simple, if it has a high flammability, and you light it on fire, then that would be a chemical change.

Explanation:

May i have brainliest please and don't forget to drop a heart

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A flask is filled with 50.0 ml of 0.15 M HCl acid. Exactly 0.054 grams of CaCo3 are placed in the acid,
ira [324]

Answer:

See explanation

Explanation:

2HCl(aq) + CaCO3(aq) ------->CaCl2(aq) + CO2(g) + H2O(l)

Number of moles of acid present = 50/1000 * 0.15 = 0.0075 moles

Number of moles of calcium carbonate = 0.054g/100 g/mol = 0.00054 moles

2 moles of HCl reacts with 1 mole of calcium carbonate

x moles of HCl reacts with 0.00054 moles of calcium carbonate

x = 2 *  0.00054/1

x = 0.00108 moles of HCl

Amount of acid left = 0.0075 moles - 0.0075 moles = 0.00642 moles

Reaction of HCl and NaOH

HCl(aq) + NaOH(aq) ------> NaCl(aq) + H2O(l)

Since the reaction is in the mole ratio of 1:1

0.00642 moles of HCl is neutralized by 0.00642 moles of NaOH

8 0
3 years ago
What is the molecular geometry of a molecule made of two atoms that share one pair of electrons and have no lone electrons pairs
morpeh [17]

Answer:

linear

Explanation:

Actually I consulted various sources too and that was the most sought answer,I just decided to answer you before studying it too

5 0
3 years ago
15. What are the five things that influence weather?
const2013 [10]
Wind
air pressure
temperature
humidity
clouds
3 0
3 years ago
Which of the following is the correct chemical equation and is properly balanced for:
lbvjy [14]

Answer:are there any abc or do you have to make an answer?

Explanation:

4 0
3 years ago
Which of following is true of liquids?
Mashutka [201]

Answer:

  • The particles move at a high rate of speed.
  • The particles have a medium amount of kinetic energy and slide past one another.

Explanation:

The options that are true about liquids are A. The particles move at a high rate of speed and B. The particles have a medium amount of kinetic energy and slide past one another, because particles in a liquids are slippery, so they slide past one another. This is how liquids move around. The particles help it move around.

7 0
3 years ago
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