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
jok3333 [9.3K]
3 years ago
7

Answers for cardiovascular system crossword puzzle

Chemistry
2 answers:
Aleks [24]3 years ago
7 0
Here the answers now brainlest

KengaRu [80]3 years ago
5 0
I dont know the answer

You might be interested in
What is the effect on pollution when cool air becomes trapped under warm air?
sergejj [24]
More pollutants accumulate
3 0
2 years ago
Read 2 more answers
294 g of potassium dichromate contains 52 g of chromium and 39 g of potassium. What is the mass percent of oxygen in the compoun
IgorLugansk [536]
69.047% is the answer to this question
3 0
3 years ago
Read 2 more answers
If 10.0 g water at 0.0°C is mixed with 20.0 g of water at 30.0°C what is the final temperature of the mixture?
Bond [772]

Answer:

1.67 gradius Celcius

Explanation:

Please see the step-by-step solution in the picture attached below.

Hope this answer can help you. Have a nice day!

7 0
3 years ago
PLS HELP THE QUESTION IS ON THE PICTURE
IceJOKER [234]

<u>Concepts used:</u>

1 mole of an element or a compound has 6.022 * 10²³ formula units

So, we can say that: <em>Number of formula units = number of moles * 6.022*10²³</em>

number of moles of an element or a compound = given mass/molar mass

<u>__________________________________________________________</u>

<u>003 - </u><u>Number of CaH₂ formula units in 6.065 grams</u>

Number of Moles:

We know that the molar mass of CaH₂ is 42 grams/mol

Number of Moles of CaH₂ = given mass/molar mass

Number of moles = 6.065 / 42

Number of moles = 0.143 moles

Number of Formula units:

Number of formula units = number of moles * 6.022*10²³

= 0.143 * 6.022 * 10²³

= 0.86 * 10²³ formula units

__________________________________________________________

<u>004 </u><u>- Mass of 6.34 * 10²⁴ formula units of NaBF₄</u>

Number of Moles:

We mentioned this formula before:

<em>Number of formula units = number of moles * 6.022*10²³</em>

Solving it for number of moles, we get:

Number of moles = Number of Formula units / 6.022* 10²³

replacing the variable

Number of moles = 6.34 * 10²⁴ / 6.022*10²³

Number of moles=  10.5 moles

Mass of 10.5 moles of NaBF₄:

Molar mass of NaBF₄ = 38 grams/mol

Mass of 10.5 moles = 10.5 * molar mass

Mass of 10.5 moles = 10.5 * 38

Mass = 399 grams

__________________________________________________________

<u>005</u><u> - Number of moles in 9.78 * 10²¹ formula units of CeI₃</u>

Number of Moles:

We have the formula:

Number of moles = Number of Formula units / 6.022* 10²³

replacing the variables

Number of Moles = 9.78 * 10²¹ / 6.022*10²³

Number of Moles = 1.6 / 10²

Number of Moles = 1.6 * 10⁻² moles   OR   0.016 moles

3 0
2 years ago
Help me I hate science so much​
mestny [16]

Answer:

it would be sciemce

Explanation:

yeah because its  hargf

8 0
2 years ago
Read 2 more answers
Other questions:
  • A scientist has a sample of uranium–238 (U–238) that is decaying to thorium–234 (Th–234). During the transmutation, a gamma ray
    14·1 answer
  • Which of the following forms a molecular solid? Which of the following forms a molecular solid? C, graphite C10H22 CaO gold
    14·1 answer
  • ANSWER ASAPP<br> What is a compound?
    5·2 answers
  • At which of the following temperatures is the average kinetic energy of the molecules of a substance the greatest?
    8·2 answers
  • Heptane and water do not mix, and heptane has a lower density (0.684 g/mL.) than water (1.00 g/
    6·1 answer
  • ANSWER THESE 5 MULTPLE CHOICE QUESTIONS!!!<br> I'LL GIVE 30 POINTS AND A BRAINIEST:)
    14·2 answers
  • Which tempature is warmer than the freezing point in water?
    5·2 answers
  • Which plate is the South American plate?<br> Web<br> D<br> O A D<br> B. A<br> C. B<br> В<br> D C
    5·1 answer
  • Calculate the empirical formula of a compound that is 56.27% phosphorus and the remainder is oxygen.
    14·1 answer
  • Why was Niels Bohr’s atomic model superior to all the earlier models?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!