大师作文网高手们快来帮我!超急!
来源：学生作业帮 编辑：大师作文网作业帮 分类：英语作业 时间：2024/09/20 06:30:14
高手们快来帮我!超急!
帮我做这些题,
1.if you dissolve instant coffee in hot water is the
a)solvent
b)solute
c)solution
d)suspension
2.what is the difference between a solution and a suspension?
.
3.each of the following is a mixture of solid and a liquid:
a.muddy water
b.sugar solution
a)in which mixture are the bits of solid smallest?
b)which could be separated by filtration?
c)which could be separtaed using a centrifuge?
4.centrifuge
a)method of separating an insoluble solid from a liquid
b)method of getting back the solvent from a soluting
c)device for whirling a suspension to separate it
d)method of getting back the solute from a soluting
e)device for turning gas into liquid
5.a forensic scientist is a person who uses science to help solve crimes.explain how a forensic scientist could ind out which one of two felt pens was used to write a ransom note.
帮我做这些题,
1.if you dissolve instant coffee in hot water is the
a)solvent
b)solute
c)solution
d)suspension
2.what is the difference between a solution and a suspension?
.
3.each of the following is a mixture of solid and a liquid:
a.muddy water
b.sugar solution
a)in which mixture are the bits of solid smallest?
b)which could be separated by filtration?
c)which could be separtaed using a centrifuge?
4.centrifuge
a)method of separating an insoluble solid from a liquid
b)method of getting back the solvent from a soluting
c)device for whirling a suspension to separate it
d)method of getting back the solute from a soluting
e)device for turning gas into liquid
5.a forensic scientist is a person who uses science to help solve crimes.explain how a forensic scientist could ind out which one of two felt pens was used to write a ransom note.
1c溶液
2A solution is a mixture of.a.polar and nonpolar substances c.protons and Which of the following statements most accurately describes the difference before cheat he lyric between an ionic bond Mixture.The simple dynamic model is often adopted to deal with control questions in research on semi-active suspension.The model has more theoretic meanings than authentic ones because of difference between practical and physical models.The virtual prototype has remarkable advantages in its application simulation processes.It is not only faster and more veracious,but also of better visualization of the simulation results.
2A solution is a mixture of.a.polar and nonpolar substances c.protons and Which of the following statements most accurately describes the difference before cheat he lyric between an ionic bond Mixture.The simple dynamic model is often adopted to deal with control questions in research on semi-active suspension.The model has more theoretic meanings than authentic ones because of difference between practical and physical models.The virtual prototype has remarkable advantages in its application simulation processes.It is not only faster and more veracious,but also of better visualization of the simulation results.