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
Anestetic [448]
3 years ago
14

Is VAL ("23")+5=28? It is a true and false question.​

Chemistry
1 answer:
Flauer [41]3 years ago
5 0

Answer:

True

Explanation:

You might be interested in
A student weighs out 3.68 grams of cobalt (II) chloride to do an experiment with. How many moles of is this?
leva [86]

Answer:

0.029mol

Explanation:

from

n=m÷mr

where

n is number of moles

m is mass

mr is molar mass

8 0
2 years ago
Balance the equation by ion electron method
irina1246 [14]

Answer:i believe you are to decompose the formula (i think)

8 0
2 years ago
What is the temperature change in 355 mL of water upon absorption of 34 kJ of heat? (The specific heat capacity of water is 4.18
frozen [14]

The temperature change is 23 °C.

<em>q = mC</em>Δ<em>T</em>

Δ<em>T</em> = <em>q</em>/(<em>mC</em>)

<em>m</em> = 355 g

∴ Δ<em>T</em> = (34 000 J)/(355 g × 4.184 J·°C⁻¹g⁻¹) = 23 °C

<em>Note</em>: The answer can have only <em>two significant figures</em> because that is all you gave for the amount of heat absorbed.

7 0
3 years ago
Read 2 more answers
What are the energy in a plant?
Vadim26 [7]
In plants, these energy factories are called chloroplasts. They collect energy from the sun and use carbon dioxide and water in the process called photosynthesis to produce sugars. Animals can make use of the sugars provided by the plants in their own cellular energy factories, the mitochondria.
3 0
3 years ago
Calculate the amount of heat energy required to heat up 21.5 grams of ice from -15 °C to 10°C.
Anuta_ua [19.1K]

Answer:

8.74kj

Explanation:

There are three steps

Warming up the ice to its melitng point. THe nergy required to melt it completely. The energy requiered to warm up the water to a certain temp.

It can be seen by the three equations written

5 0
2 years ago
Other questions:
  • What is the atomic mass of a carbon isotope that has 6 protons and 7 neutrons?
    5·2 answers
  • How are mass and volumes alike?
    12·1 answer
  • A 2.0 L volume of hydrogen gas is combined with 1.0 L of oxygen gas to produce 2.0 L of water vapor. Does oxygen undergo a chemi
    9·1 answer
  • R4te me for 10 points and be honest with me PLEASE
    13·2 answers
  • PLSSSSSSSSSS HELP!!! I REALLY NEED IT SO MUCH :( I PROMICE TO GIVE BRAINLIEST AND FIVE STARS AND A THANKS! 6TH GRADE SCIENCE! i
    11·1 answer
  • 1. Matter can (change form/be created)
    10·1 answer
  • In our bodies, glucose is broken down into carbon dioxide and water, much like a combustion reaction. How many grams of O2 are n
    7·1 answer
  • If an engineer's greatest concern is specific impulse, which type of fuel should she use?
    9·1 answer
  • Heat transfer through direct contact between molecules
    13·1 answer
  • If the number is not a proper coefficient, how would you make it one?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!