1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
igomit [66]
3 years ago
15

Thea is doing a chemistry experiment. The instructions say she needs to use pure water. Hamza offer her a bottle labelled “100%

Pure Spring Water”. Suggest why this water is unlikely to be suitable for the experiment [2]
A scientist is comparing 2 samples of the same compound. One is pure and the other is impure. The compound is a solid at room temperature. Explain how the scientist could tell which is the pure compound. [2]

The melting point of pure asprin is 136oC. The melting point of a sample of asprin is measured as being between 128 – 132oC. Give two reasons that suggest the sample is not pure asprin. [2]
Gunpowder is a formulation of potassium nitrate, charcoal and sulphur in the ratio 15 : 3 : 2
What is meant by the term “formulation” [2]
Calculate the mass of charcoal in 40g of gunpowder [1]
if you can just give me hints that would be great
Chemistry
1 answer:
Diano4ka-milaya [45]3 years ago
5 0
How is this going to help us in life wat the fawk
You might be interested in
Greenhouse effect in a sentence and word to study
Natasha_Volkova [10]

The greenhouse effect is when Earth's atmosphere gets surrounded with gasses causing the Earth to warm up.

7 0
3 years ago
2 HCl + Na2SO4 > 2 NaCl + H2SO4
Cerrena [4.2K]

Answer:

15

Explanation:

8 0
3 years ago
Dosage calculation order: 3 mg available: 2 mg per 6 ml how many ml will be given?
Anna35 [415]

9ml will be given for the case of dosage calculation order: 3 mg available: 2 mg per 6 ml

Conversion factors are necessary for dosage calculation, such as when translating from pounds to kilograms or liters to milliliters. This approach, which is straightforward in design, enables physicians to deal with different units of measurement and convert factors to arrive at the solution.

dosage calculation techniques serve as a second or third check on the accuracy of the previous computation techniques. Dimensional Analysis, Ratio Proportion, and Formula or Desired Over Have Method are the three main approaches for dosage calculation. dosage calculations are frequently prescribed and labeled based on their weight or, for solutions, their strength, which is the amount of weight dissolved or suspended in a given volume.

To learn more about dosage calculation please visit -
brainly.com/question/12720845
#SPJ4

3 0
2 years ago
How would you expect an instrument with a high amplitude to sound compared to an instrument with a low amplitude
Veronika [31]
An instrument with high amplitude has loud sound. An instrument with low amplitude has soft sound.
5 0
3 years ago
HELP PLS! I NEED TO GET THIS RIGHT! Curious Carl and his lab partner were conducting a variety of experiments to produce gases:
katen-ka-za [31]

Answer:

0.25 mole of H₂

Explanation:

The equation for the reaction is given below:

Mg + 2HCl —> MgCl₂ + H₂

From the question given above, we were told that the reaction produced 5.6 L of H₂.

Thus, we can obtain obtain the number of mole of H₂ that occupied 5.6 L at STP as follow:

1 mole of H₂ occupied 22.4 L at STP.

Therefore, Xmol of H₂ will occupy 5.6 L at STP i.e

Xmol of H₂ = 5.6 / 22.4

Xmol of H₂ = 0.25 mole

Therefore, 0.25 mole of H₂ were obtained from the reaction.

8 0
3 years ago
Other questions:
  • Zeke is on spring break. He lives in a cold climate, so he decides to drive to a warmer climate. Before he leaves for his vacati
    8·1 answer
  • Why is it important to learn about fuels and gases?
    14·1 answer
  • Convert the following to number of moles: 4.03 x 10^21 molecules present in AgNO3
    5·1 answer
  • Suppose 7 pints of a 23​% alcohol solution is mixed with 3 pints of a 70​% alcohol solution. what is the concentration of alcoho
    12·1 answer
  • PLEASE HELP ASAP
    12·2 answers
  • The standard length of a certain golf club is 116.84 cm. You measure the club to be 116.85 cm long. You measure it again and fin
    8·1 answer
  • What is point group of allene?​
    7·2 answers
  • Convert the pressure 1.30 atm to kPa
    14·1 answer
  • How many molecules are in 54.0 grams of CO2?
    8·1 answer
  • What is the element Cr2O5 name? It is on my college study guide and I am really struggling, please help.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!