« previous next »

Author Question: A student working in the laboratory needs 200.0 g of a liquid chemical whose density is 0.690 g/cm3. ... (Read 17 times)

craiczarry

  • Hero Member
  • *****
  • Posts: 527
on: Aug 27, 2018
A student working in the laboratory needs 200.0 g of a liquid chemical whose density is 0.690 g/cm3. What volume of this liquid should he measure?
 
  A) 138 cm3
  B) 69.0 cm3
  C) 200. cm3
  D) 290 cm3

Question 2

Which of the following equations is not a single replacement reaction?
 
  A) H2SO4 + Mg(OH)2  H2O + MgSO4
  B) Zn + HCl  H2 + ZnCl2
  C) Al + Fe2O3  Al2O3 + Fe
  D) Na + H2O  NaOH + H2

Question 3

Which of the following is not a substitution reaction?
 
  A) NaOH + HCl NaCl + H2O
  B) AgNO3 + NaCl  NaNO3 + AgCl
  C) 2Fe + O2  2FeO
  D) CH3OH + HCl  CH3Cl + H2O

Question 4

A train robber in a western movie steals two gold ingots, each of which has a volume of 1000. cm3. The density of gold is 19.3 g/cm3. What is the mass of the two ingots?
 
  A) 38.6 g
  B) 19,300 g
  C) 38,600 g
  D) 104 g


poopface

  • Sr. Member
  • ****
  • Posts: 339
Reply #1 on: Aug 27, 2018
Answer to Question 1

D

Answer to Question 2

A

Answer to Question 3

C

Answer to Question 4

C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

Did you know?

When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

Did you know?

Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.

Did you know?

Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.

Did you know?

The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.

Working out Working out
Variety of chemical reagents strips. Variety of chemical reagents strips.
Medical assistant working in a front office area of a medical office. Medical assistant working in a front office area of a medical office.
Signal Transmission at a Chemical Synapse Signal Transmission at a Chemical Synapse
Physics - Density and Pressure Physics - Density and Pressure
As a nerve impulse arrives at the synapse, it triggers the release of a chemical neurotransmitter fr As a nerve impulse arrives at the synapse, it triggers the release of a chemical neurotransmitter fr
Video: Oxygen transport - methods and oxyhemoglobin

For a complete list of videos, visit our video library