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
7nadin3 [17]
3 years ago
6

Answer my my science homework please

Chemistry
1 answer:
ludmilkaskok [199]3 years ago
5 0
1. D

2. <span>83.5 million years ago - 66 million years ago

3. </span><span>It had armor and could rotate to keep its caudal bludgeon facing the enemy.

hope this helped :)
alisa202</span>
You might be interested in
Look at this graph:
ira [324]
The slope is 3/2
3 over 2

4 0
2 years ago
How is thermal energy transferred during conduction? Check all that apply.
Dvinal [7]

Answer:

Thermal energy is transferred between particles that are in direct contact with each other.

Thermal energy is transferred between objects of different temperatures.

Thermal energy is transferred from fast-moving particles to slow-moving particles.

Explanation:

5 0
2 years ago
Please help i will give brainliest
ExtremeBDS [4]
Question 2 answer is A
7 0
3 years ago
A vessel contains a mixture of gases. The mass of each gas used to make the mixture is known. Which of the following information
faltersainse [42]

Answer: The molar mass of each gas

Explanation:

Mole fraction is the ratio of moles of that component to the total moles of solution. Moles of solute is the ratio of given mass to the molar mass.

\text{Mole fraction of solute}=\frac{\text{Moles of solute}}{\text{Total Moles}}

Suppose if there are three gases A, B and C.

a) \text{Mole fraction of A}=\frac{\text{Moles of A}}{\text{ Moles of (A+B+C)}}

b) \text{Mole fraction of B}=\frac{\text{Moles of B}}{\text{ Moles of (A+B+C)}}

c) \text{Mole fraction of C}=\frac{\text{Moles of C}}{\text{ Moles of (A+B+C)}}

moles of solute =\frac{\text {given mass}}{\text {Molar mass}}

Thus if mass of each gas is known , we must know the molar mass of each gas to know the moles of each gas.

8 0
3 years ago
If the pH changes from 5 to 6, the H+ would concentration would?
Strike441 [17]
Decrease by factor 10
5 0
3 years ago
Other questions:
  • Which of the following describes a community?
    15·2 answers
  • A student inflates a balloon for a party inside her house, where the temperature is 23°C. She then takes the balloon outside, wh
    13·2 answers
  • You need to make an aqueous solution of 0.192 M barium sulfide for an experiment in lab, using a 500 mL volumetric flask. How mu
    11·1 answer
  • Which change would increase the pressure exerted by a gas?
    11·1 answer
  • The overall order of an elementary step directly corresponds to its molecularity.
    11·1 answer
  • What is the mass of 22.4L of H2 at stp
    15·1 answer
  • You need 150g of pure lithium for an experiment you're doing. You have 675g of lithium oxide (Li2O). Can you extract all the lit
    14·1 answer
  • Two types of liquids, two types of gases, two types of solids.
    9·2 answers
  • Calculate the mass of al2so4)3 in 250ml of solution if the concentration is .48 N<br>​
    7·1 answer
  • Describe how to determine the molar mass of a compound
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!