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
Darina [25.2K]
3 years ago
12

Which represents an endothermic reaction

Chemistry
2 answers:
aalyn [17]3 years ago
7 0

Answer:

melting from ice cube to water

Explanation:

this is because the object gains heat and melting occurs in the object

Alex_Xolod [135]3 years ago
7 0

Answer:it is b

Explanation:

You might be interested in
Which statement best describes organs in an organ system? A. Each organ does part of a larger job. B. Each organ can perform onl
nikklg [1K]

Answer:

The correct answer is -  A. Each organ does part of a larger job.

Explanation:

An organ in an organ system of an individual organism is the group of similar tissues that collectively perform a common function in the organ system and play their part in a larger job.

A group of organs makes an organ system to perform a particular but large function in the organism for its survival. An example of the organ in an organ system is the heart in the cardiovascular system. The heart is an organ that pumps the blood out of the heart to the various part of the cardiovascular system such as lungs, arteries, and veins so it can take nutrients and oxygen to various parts carried by the blood.

5 0
3 years ago
24) What is momentum? *
sergiy2304 [10]

Answer:

Momentum is the measure of the motion of an object found by multiplying the objects mass and velocity.

Symbol: p

Units: kg x m/s

Explanation:

......

6 0
3 years ago
Name three of the most sensitive parts of your body (Appropriate parts. Ex: finger, wrist, shoulder, etc.)
yKpoI14uk [10]
Inner thigh, eyes, brain
3 0
4 years ago
Find the natural abundance of Si-30.
nataly862011 [7]
<span> First you need to know how many isotopes there are of silicon, and its average atomic units (look at periodic table). Then make up a system of equations to solve for it. Theres 3 stable silicon isotopes (28, 29, 30) so you will need to have 3 equations. You must be given the percent abundance of at least one of the isotopes to solve because here I can only see 2 equations (numbered down below) set x = percent abundance of si-28 y = percent abundance of si-29 z = percent abundance of si-30 since all of silicon atoms account for 100% of all silicon: x + y + z = 100% = 1 therefore: 1) x = 1 - y - z You also have 2) 28x + 29y + 30z = average atomic mass you can substitute x so that equation becomes: 28 (1 - y - z) + 29y + 30z = average atomic mass See how you have 2 variables here? You cant go on until you know the value of one isotope already or you have given a clue which you can derive the third equation</span>
5 0
3 years ago
A vehicle goes from 5 m/s to 50 m/s in seconds. What is it’s acceleration?
VLD [36.1K]

Answer:

the acceleration i think is 10

Explanation:

5x10=50

7 0
3 years ago
Other questions:
  • Burning a piece of wood in fire can be best described as a chemical change because the atoms in wood change their state. physica
    13·2 answers
  • What does the Aufbau principle state?
    10·2 answers
  • Which of the following describes a chemical reaction?
    7·1 answer
  • Calculate the volume of 0.200 m cacl2 needed to produce 2.00 g of caco
    6·1 answer
  • Question in the picture thank you sm!!!!​
    13·1 answer
  • How many grams of a 19.6% sugar solution contain 72.5 g of sugar?
    10·1 answer
  • Why is magma so hot?
    14·1 answer
  • How did Ptolemy's model of the solar system explain the apparent changes in speed and direction of the planets?
    13·1 answer
  • Vapour-liquid equilibrium of a two-component ideal solution of trichloroethene (C2HCl3) and trichloromethane (CHCl3) is establis
    10·1 answer
  • PLEASE HELP!!!!! Is it as critcal for your tap water to be a good buffer as it is for the water at the nearest lake to be a good
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!