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
svp [43]
3 years ago
12

When might you receive a blood transfusion Help me pls

Chemistry
1 answer:
umka21 [38]3 years ago
5 0

Explanation:

in the case of blood loss, you need blood from someone with your blood type or with universal donor type

You might be interested in
BRAINLIESTTT ASAP!! PLEASE HELP ME :)
Ratling [72]

Jot down the formula of the ionic compound. Let's say the ionic compound you're working with is NaCl.  

Write the name of the metal.

Add the name of the non-metal with an –ide ending.

Combine the cation and anion names.

Practice naming more simple ionic compounds.

7 0
3 years ago
The temperature of the gas
Gemiola [76]
77°F
77
I think
4 0
3 years ago
Marcus measured the masses and volumes of samples of four different substances, and he calculated their densities. The table sho
Zina [86]

<u>Given:</u>

Calculated density values-

Aluminum = 2.7 g/cm3

Copper = 9.0 g/cm3

Iron = 7.9 g/cm3

Titanium = 4.8 g/cm3

Unknown sample mass = 9.5 g

Sample volume = 2.1 cm3

<u>To determine:</u>

The identity of the unknown sample

<u>Explanation:</u>

'Density' is a physical parameter which can be used to identify the nature of the unknown substance.

Density = Mass/Volume

For the unknown sample

Density = 9.5 g/2.1 cm3 = 4.52 g/cm3

This matches closely with the calculated density of titanium

Ans: The unknown substance is made of titanium

4 0
3 years ago
Less energy was entering Earth's
ololo11 [35]

Answer:

The temperatures on Earth increase

Explanation:

more energy results in more heat.

6 0
3 years ago
Equation for questions 1-4:
Karolina [17]

Answer:

5.625 moles of oxygen, O₂.

Explanation:

The balanced equation for the reaction is given below:

4Al + 3O₂ —> 2Al₂O₃

From the balanced equation above,

4 moles of Al reacted with 3 moles of O₂.

Finally, we shall determine the number of mole of O₂ required to react with 7.5 moles of aluminum, Al. This can be obtained as illustrated below:

From the balanced equation above,

4 moles of Al reacted with 3 moles of O₂.

Therefore, 7.5 moles of Al will react with = (7.5 × 3)/4 = 5.625 moles of O₂.

Thus, 5.625 moles of O₂ is needed for the reaction.

3 0
3 years ago
Other questions:
  • From laboratory measurements, we know that a particular spectral line formed by hydrogen appears at a wavelength of 486.1 nanome
    12·1 answer
  • Calculate the mole fraction of methane in the inital mixture assuming the temperature and volume remain constant
    13·1 answer
  • If 4.5 mol of C6H8O7 react, how many moles of CO2 and Na3C6H5O7 will be produced?
    15·1 answer
  • Which organ is a part of circulatory system? <br> a. brain<br> b. heart<br> c. lungs<br> d. stomach
    14·2 answers
  • What is described by the VSEPR theory?
    13·1 answer
  • Which of the following is most likely a homogeneous mixture?
    10·2 answers
  • What ion will be formed by the selenium atom shown below when it has a stable set of valence electrons?
    12·1 answer
  • Girls are usually completely physically mature by _____ years old.
    14·2 answers
  • How many Atoms are in H2COCH? Need asap pleassseee!
    14·1 answer
  • How many grams of Ca(OH)2 are needed to produce 500 mL of 2.99 M Ca(OH)2 solution? 1L=1000mL
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!